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Article ; Online: Search for γ-Ray Line Signals from Dark Matter Annihilations in the Inner Galactic Halo from 10 Years of Observations with H.E.S.S.

Abdallah, H / Abramowski, A / Aharonian, F / Ait Benkhali, F / Angüner, E O / Arakawa, M / Arrieta, M / Aubert, P / Backes, M / Balzer, A / Barnard, M / Becherini, Y / Becker Tjus, J / Berge, D / Bernhard, S / Bernlöhr, K / Blackwell, R / Böttcher, M / Boisson, C /

Bolmont, J / Bonnefoy, S / Bordas, P / Bregeon, J / Brun, F / Brun, P / Bryan, M / Büchele, M / Bulik, T / Capasso, M / Caroff, S / Carosi, A / Carr, J / Casanova, S / Cerruti, M / Chakraborty, N / Chaves, R C G / Chen, A / Chevalier, J / Colafrancesco, S / Condon, B / Conrad, J / Davids, I D / Decock, J / Deil, C / Devin, J / deWilt, P / Dirson, L / Djannati-Ataï, A / Domainko, W / Donath, A / Drury, L O'C / Dutson, K / Dyks, J / Edwards, T / Egberts, K / Eger, P / Emery, G / Ernenwein, J-P / Eschbach, S / Farnier, C / Fegan, S / Fernandes, M V / Fiasson, A / Fontaine, G / Förster, A / Funk, S / Füßling, M / Gabici, S / Gallant, Y A / Garrigoux, T / Gaté, F / Giavitto, G / Giebels, B / Glawion, D / Glicenstein, J F / Gottschall, D / Grondin, M-H / Hahn, J / Haupt, M / Hawkes, J / Heinzelmann, G / Henri, G / Hermann, G / Hinton, J A / Hofmann, W / Hoischen, C / Holch, T L / Holler, M / Horns, D / Ivascenko, A / Iwasaki, H / Jacholkowska, A / Jamrozy, M / Janiak, M / Jankowsky, D / Jankowsky, F / Jingo, M / Jouvin, L / Jung-Richardt, I / Kastendieck, M A / Katarzyński, K / Katsuragawa, M / Katz, U / Kerszberg, D / Khangulyan, D / Khélifi, B / King, J / Klepser, S / Klochkov, D / Kluźniak, W / Komin, Nu / Kosack, K / Krakau, S / Kraus, M / Krüger, P P / Laffon, H / Lamanna, G / Lau, J / Lees, J-P / Lefaucheur, J / Lemière, A / Lemoine-Goumard, M / Lenain, J-P / Leser, E / Liu, R / Lohse, T / Lorentz, M / López-Coto, R / Lypova, I / Malyshev, D / Marandon, V / Marcowith, A / Mariaud, C / Marx, R / Maurin, G / Maxted, N / Mayer, M / Meintjes, P J / Meyer, M / Mitchell, A M W / Moderski, R / Mohamed, M / Mohrmann, L / Morå, K / Moulin, E / Murach, T / Nakashima, S / de Naurois, M / Ndiyavala, H / Niederwanger, F / Niemiec, J / Oakes, L / O'Brien, P / Odaka, H / Ohm, S / Ostrowski, M / Oya, I / Padovani, M / Panter, M / Parsons, R D / Pekeur, N W / Pelletier, G / Perennes, C / Petrucci, P-O / Peyaud, B / Piel, Q / Pita, S / Poireau, V / Poon, H / Prokhorov, D / Prokoph, H / Pühlhofer, G / Punch, M / Quirrenbach, A / Raab, S / Rauth, R / Reimer, A / Reimer, O / Renaud, M / de Los Reyes, R / Rieger, F / Rinchiuso, L / Romoli, C / Rowell, G / Rudak, B / Rulten, C B / Sahakian, V / Saito, S / Sanchez, D A / Santangelo, A / Sasaki, M / Schandri, M / Schlickeiser, R / Schüssler, F / Schulz, A / Schwanke, U / Schwemmer, S / Seglar-Arroyo, M / Settimo, M / Seyffert, A S / Shafi, N / Shilon, I / Shiningayamwe, K / Simoni, R / Sol, H / Spanier, F / Spir-Jacob, M / Stawarz, Ł / Steenkamp, R / Stegmann, C / Steppa, C / Sushch, I / Takahashi, T / Tavernet, J-P / Tavernier, T / Taylor, A M / Terrier, R / Tibaldo, L / Tiziani, D / Tluczykont, M / Trichard, C / Tsirou, M / Tsuji, N / Tuffs, R / Uchiyama, Y / van der Walt, J / van Eldik, C / van Rensburg, C / van Soelen, B / Vasileiadis, G / Veh, J / Venter, C / Viana, A / Vincent, P / Vink, J / Voisin, F / Völk, H J / Vuillaume, T / Wadiasingh, Z / Wagner, S J / Wagner, P / Wagner, R M / White, R / Wierzcholska, A / Willmann, P / Wörnlein, A / Wouters, D / Yang, R / Zaborov, D / Zacharias, M / Zanin, R / Zdziarski, A A / Zech, A / Zefi, F / Ziegler, A / Zorn, J / Żywucka, N

Physical review letters

2018 Volume 120, Issue 20, Page(s) 201101

Abstract: ... with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant γ-ray excess above ...

Abstract	Spectral lines are among the most powerful signatures for dark matter (DM) annihilation searches in very-high-energy γ rays. The central region of the Milky Way halo is one of the most promising targets given its large amount of DM and proximity to Earth. We report on a search for a monoenergetic spectral line from self-annihilations of DM particles in the energy range from 300 GeV to 70 TeV using a two-dimensional maximum likelihood method taking advantage of both the spectral and spatial features of the signal versus background. The analysis makes use of Galactic center observations accumulated over ten years (2004-2014) with the H.E.S.S. array of ground-based Cherenkov telescopes. No significant γ-ray excess above the background is found. We derive upper limits on the annihilation cross section ⟨σv⟩ for monoenergetic DM lines at the level of 4×10^{-28} cm^{3} s^{-1} at 1 TeV, assuming an Einasto DM profile for the Milky Way halo. For a DM mass of 1 TeV, they improve over the previous ones by a factor of 6. The present constraints are the strongest obtained so far for DM particles in the mass range 300 GeV-70 TeV. Ground-based γ-ray observations have reached sufficient sensitivity to explore relevant velocity-averaged cross sections for DM annihilation into two γ-ray photons at the level expected from the thermal relic density for TeV DM particles.
Language	English
Publishing date	2018-05-18
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.120.201101
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for Dark Matter Annihilations towards the Inner Galactic Halo from 10 Years of Observations with H.E.S.S.

Abdallah, H / Abramowski, A / Aharonian, F / Ait Benkhali, F / Akhperjanian, A G / Angüner, E / Arrieta, M / Aubert, P / Backes, M / Balzer, A / Barnard, M / Becherini, Y / Becker Tjus, J / Berge, D / Bernhard, S / Bernlöhr, K / Birsin, E / Blackwell, R / Böttcher, M /

Boisson, C / Bolmont, J / Bordas, P / Bregeon, J / Brun, F / Brun, P / Bryan, M / Bulik, T / Capasso, M / Carr, J / Casanova, S / Chakraborty, N / Chalme-Calvet, R / Chaves, R C G / Chen, A / Chevalier, J / Chrétien, M / Colafrancesco, S / Cologna, G / Condon, B / Conrad, J / Couturier, C / Cui, Y / Davids, I D / Degrange, B / Deil, C / deWilt, P / Djannati-Ataï, A / Domainko, W / Donath, A / Drury, L O'C / Dubus, G / Dutson, K / Dyks, J / Dyrda, M / Edwards, T / Egberts, K / Eger, P / Ernenwein, J-P / Eschbach, S / Farnier, C / Fegan, S / Fernandes, M V / Fiasson, A / Fontaine, G / Förster, A / Funk, S / Füßling, M / Gabici, S / Gajdus, M / Gallant, Y A / Garrigoux, T / Giavitto, G / Giebels, B / Glicenstein, J F / Gottschall, D / Goyal, A / Grondin, M-H / Grudzińska, M / Hadasch, D / Hahn, J / Hawkes, J / Heinzelmann, G / Henri, G / Hermann, G / Hervet, O / Hillert, A / Hinton, J A / Hofmann, W / Hoischen, C / Holler, M / Horns, D / Ivascenko, A / Jacholkowska, A / Jamrozy, M / Janiak, M / Jankowsky, D / Jankowsky, F / Jingo, M / Jogler, T / Jouvin, L / Jung-Richardt, I / Kastendieck, M A / Katarzyński, K / Katz, U / Kerszberg, D / Khélifi, B / Kieffer, M / King, J / Klepser, S / Klochkov, D / Kluźniak, W / Kolitzus, D / Komin, Nu / Kosack, K / Krakau, S / Kraus, M / Krayzel, F / Krüger, P P / Laffon, H / Lamanna, G / Lau, J / Lees, J-P / Lefaucheur, J / Lefranc, V / Lemière, A / Lemoine-Goumard, M / Lenain, J-P / Leser, E / Lohse, T / Lorentz, M / Lui, R / Lypova, I / Marandon, V / Marcowith, A / Mariaud, C / Marx, R / Maurin, G / Maxted, N / Mayer, M / Meintjes, P J / Menzler, U / Meyer, M / Mitchell, A M W / Moderski, R / Mohamed, M / Morå, K / Moulin, E / Murach, T / de Naurois, M / Niederwanger, F / Niemiec, J / Oakes, L / Odaka, H / Ohm, S / Öttl, S / Ostrowski, M / Oya, I / Padovani, M / Panter, M / Parsons, R D / Paz Arribas, M / Pekeur, N W / Pelletier, G / Petrucci, P-O / Peyaud, B / Pita, S / Poon, H / Prokhorov, D / Prokoph, H / Pühlhofer, G / Punch, M / Quirrenbach, A / Raab, S / Reimer, A / Reimer, O / Renaud, M / de Los Reyes, R / Rieger, F / Romoli, C / Rosier-Lees, S / Rowell, G / Rudak, B / Rulten, C B / Sahakian, V / Salek, D / Sanchez, D A / Santangelo, A / Sasaki, M / Schlickeiser, R / Schüssler, F / Schulz, A / Schwanke, U / Schwemmer, S / Seyffert, A S / Shafi, N / Simoni, R / Sol, H / Spanier, F / Spengler, G / Spieß, F / Stawarz, L / Steenkamp, R / Stegmann, C / Stinzing, F / Stycz, K / Sushch, I / Tavernet, J-P / Tavernier, T / Taylor, A M / Terrier, R / Tluczykont, M / Trichard, C / Tuffs, R / van der Walt, J / van Eldik, C / van Soelen, B / Vasileiadis, G / Veh, J / Venter, C / Viana, A / Vincent, P / Vink, J / Voisin, F / Völk, H J / Vuillaume, T / Wadiasingh, Z / Wagner, S J / Wagner, P / Wagner, R M / White, R / Wierzcholska, A / Willmann, P / Wörnlein, A / Wouters, D / Yang, R / Zabalza, V / Zaborov, D / Zacharias, M / Zdziarski, A A / Zech, A / Zefi, F / Ziegler, A / Żywucka, N

Physical review letters

2016 Volume 117, Issue 11, Page(s) 111301

Abstract: ... for the annihilations of DM particles using γ-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S ... method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and ...

Abstract	The inner region of the Milky Way halo harbors a large amount of dark matter (DM). Given its proximity, it is one of the most promising targets to look for DM. We report on a search for the annihilations of DM particles using γ-ray observations towards the inner 300 pc of the Milky Way, with the H.E.S.S. array of ground-based Cherenkov telescopes. The analysis is based on a 2D maximum likelihood method using Galactic Center (GC) data accumulated by H.E.S.S. over the last 10 years (2004-2014), and does not show any significant γ-ray signal above background. Assuming Einasto and Navarro-Frenk-White DM density profiles at the GC, we derive upper limits on the annihilation cross section ⟨σv⟩. These constraints are the strongest obtained so far in the TeV DM mass range and improve upon previous limits by a factor 5. For the Einasto profile, the constraints reach ⟨σv⟩ values of 6×10^{-26} cm^{3} s^{-1} in the W^{+}W^{-} channel for a DM particle mass of 1.5 TeV, and 2×10^{-26} cm^{3} s^{-1} in the τ^{+}τ^{-} channel for a 1 TeV mass. For the first time, ground-based γ-ray observations have reached sufficient sensitivity to probe ⟨σv⟩ values expected from the thermal relic density for TeV DM particles.
Language	English
Publishing date	2016-09-09
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.117.111301
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Constraints on an annihilation signal from a core of constant dark matter density around the milky way center with H.E.S.S.

Abramowski, A / Aharonian, F / Ait Benkhali, F / Akhperjanian, A G / Angüner, E O / Backes, M / Balenderan, S / Balzer, A / Barnacka, A / Becherini, Y / Becker Tjus, J / Berge, D / Bernhard, S / Bernlöhr, K / Birsin, E / Biteau, J / Böttcher, M / Boisson, C / Bolmont, J /

Bordas, P / Bregeon, J / Brun, F / Brun, P / Bryan, M / Bulik, T / Carrigan, S / Casanova, S / Chadwick, P M / Chakraborty, N / Chalme-Calvet, R / Chaves, R C G / Chrétien, M / Colafrancesco, S / Cologna, G / Conrad, J / Couturier, C / Cui, Y / Davids, I D / Degrange, B / Deil, C / deWilt, P / Djannati-Ataï, A / Domainko, W / Donath, A / Drury, L O'C / Dubus, G / Dutson, K / Dyks, J / Dyrda, M / Edwards, T / Egberts, K / Eger, P / Espigat, P / Farnier, C / Fegan, S / Feinstein, F / Fernandes, M V / Fernandez, D / Fiasson, A / Fontaine, G / Förster, A / Füßling, M / Gabici, S / Gajdus, M / Gallant, Y A / Garrigoux, T / Giavitto, G / Giebels, B / Glicenstein, J F / Gottschall, D / Grondin, M-H / Grudzińska, M / Hadasch, D / Häffner, S / Hahn, J / Harris, J / Heinzelmann, G / Henri, G / Hermann, G / Hervet, O / Hillert, A / Hinton, J A / Hofmann, W / Hofverberg, P / Holler, M / Horns, D / Ivascenko, A / Jacholkowska, A / Jahn, C / Jamrozy, M / Janiak, M / Jankowsky, F / Jung-Richardt, I / Kastendieck, M A / Katarzyński, K / Katz, U / Kaufmann, S / Khélifi, B / Kieffer, M / Klepser, S / Klochkov, D / Kluźniak, W / Kolitzus, D / Komin, Nu / Kosack, K / Krakau, S / Krayzel, F / Krüger, P P / Laffon, H / Lamanna, G / Lefaucheur, J / Lefranc, V / Lemière, A / Lemoine-Goumard, M / Lenain, J-P / Lohse, T / Lopatin, A / Lu, C-C / Marandon, V / Marcowith, A / Marx, R / Maurin, G / Maxted, N / Mayer, M / McComb, T J L / Méhault, J / Meintjes, P J / Menzler, U / Meyer, M / Mitchell, A M W / Moderski, R / Mohamed, M / Morå, K / Moulin, E / Murach, T / de Naurois, M / Niemiec, J / Nolan, S J / Oakes, L / Odaka, H / Ohm, S / Opitz, B / Ostrowski, M / Oya, I / Panter, M / Parsons, R D / Paz Arribas, M / Pekeur, N W / Pelletier, G / Petrucci, P-O / Peyaud, B / Pita, S / Poon, H / Pühlhofer, G / Punch, M / Quirrenbach, A / Raab, S / Reichardt, I / Reimer, A / Reimer, O / Renaud, M / de Los Reyes, R / Rieger, F / Romoli, C / Rosier-Lees, S / Rowell, G / Rudak, B / Rulten, C B / Sahakian, V / Salek, D / Sanchez, D A / Santangelo, A / Schlickeiser, R / Schüssler, F / Schulz, A / Schwanke, U / Schwarzburg, S / Schwemmer, S / Sol, H / Spanier, F / Spengler, G / Spies, F / Stawarz, Ł / Steenkamp, R / Stegmann, C / Stinzing, F / Stycz, K / Sushch, I / Tavernet, J-P / Tavernier, T / Taylor, A M / Terrier, R / Tluczykont, M / Trichard, C / Valerius, K / van Eldik, C / van Soelen, B / Vasileiadis, G / Veh, J / Venter, C / Viana, A / Vincent, P / Vink, J / Völk, H J / Volpe, F / Vorster, M / Vuillaume, T / Wagner, S J / Wagner, P / Wagner, R M / Ward, M / Weidinger, M / Weitzel, Q / White, R / Wierzcholska, A / Willmann, P / Wörnlein, A / Wouters, D / Yang, R / Zabalza, V / Zaborov, D / Zacharias, M / Zdziarski, A A / Zech, A / Zechlin, H-S

Physical review letters

2015 Volume 114, Issue 8, Page(s) 81301

Abstract: ... Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed ...

Abstract	An annihilation signal of dark matter is searched for from the central region of the Milky Way. Data acquired in dedicated on-off observations of the Galactic center region with H.E.S.S. are analyzed for this purpose. No significant signal is found in a total of ∼9 h of on-off observations. Upper limits on the velocity averaged cross section, ⟨σv⟩, for the annihilation of dark matter particles with masses in the range of ∼300 GeV to ∼10 TeV are derived. In contrast to previous constraints derived from observations of the Galactic center region, the constraints that are derived here apply also under the assumption of a central core of constant dark matter density around the center of the Galaxy. Values of ⟨σv⟩ that are larger than 3×10^{-24} cm^{3}/s are excluded for dark matter particles with masses between ∼1 and ∼4 TeV at 95% C.L. if the radius of the central dark matter density core does not exceed 500 pc. This is the strongest constraint that is derived on ⟨σv⟩ for annihilating TeV mass dark matter without the assumption of a centrally cusped dark matter density distribution in the search region.
Language	English
Publishing date	2015-02-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.114.081301
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: H.E.S.S. Limits on Linelike Dark Matter Signatures in the 100 GeV to 2 TeV Energy Range Close to the Galactic Center.

Abdalla, H / Abramowski, A / Aharonian, F / Ait Benkhali, F / Akhperjanian, A G / Andersson, T / Angüner, E O / Arrieta, M / Aubert, P / Backes, M / Balzer, A / Barnard, M / Becherini, Y / Becker Tjus, J / Berge, D / Bernhard, S / Bernlöhr, K / Birsin, E / Blackwell, R /

Böttcher, M / Boisson, C / Bolmont, J / Bordas, P / Bregeon, J / Brun, F / Brun, P / Bryan, M / Bulik, T / Capasso, M / Carr, J / Casanova, S / Chakraborty, N / Chalme-Calvet, R / Chaves, R C G / Chen, A / Chevalier, J / Chrétien, M / Colafrancesco, S / Cologna, G / Condon, B / Conrad, J / Couturier, C / Cui, Y / Davids, I D / Degrange, B / Deil, C / Devin, J / deWilt, P / Djannati-Ataï, A / Domainko, W / Donath, A / Drury, L O'C / Dubus, G / Dutson, K / Dyks, J / Dyrda, M / Edwards, T / Egberts, K / Eger, P / Ernenwein, J-P / Eschbach, S / Farnier, C / Fegan, S / Fernandes, M V / Fiasson, A / Fontaine, G / Förster, A / Funk, S / Füßling, M / Gabici, S / Gajdus, M / Gallant, Y A / Garrigoux, T / Giavitto, G / Giebels, B / Glicenstein, J F / Gottschall, D / Goyal, A / Grondin, M-H / Grudzińska, M / Hadasch, D / Hahn, J / Hawkes, J / Heinzelmann, G / Henri, G / Hermann, G / Hervet, O / Hillert, A / Hinton, J A / Hofmann, W / Hoischen, C / Holler, M / Horns, D / Ivascenko, A / Jacholkowska, A / Jamrozy, M / Janiak, M / Jankowsky, D / Jankowsky, F / Jingo, M / Jogler, T / Jouvin, L / Jung-Richardt, I / Kastendieck, M A / Katarzyński, K / Katz, U / Kerszberg, D / Khélifi, B / Kieffer, M / King, J / Klepser, S / Klochkov, D / Kluźniak, W / Kolitzus, D / Komin, Nu / Kosack, K / Krakau, S / Kraus, M / Krayzel, F / Krüger, P P / Laffon, H / Lamanna, G / Lau, J / Lees, J-P / Lefaucheur, J / Lefranc, V / Lemière, A / Lemoine-Goumard, M / Lenain, J-P / Leser, E / Liu, R / Lohse, T / Lorentz, M / Lypova, I / Marandon, V / Marcowith, A / Mariaud, C / Marx, R / Maurin, G / Maxted, N / Mayer, M / Meintjes, P J / Meyer, M / Mitchell, A M W / Moderski, R / Mohamed, M / Morå, K / Moulin, E / Murach, T / de Naurois, M / Niederwanger, F / Niemiec, J / Oakes, L / O'Brien, P / Odaka, H / Ohm, S / Ostrowski, M / Öttl, S / Oya, I / Padovani, M / Panter, M / Parsons, R D / Paz Arribas, M / Pekeur, N W / Pelletier, G / Perennes, C / Petrucci, P-O / Peyaud, B / Pita, S / Poon, H / Prokhorov, D / Prokoph, H / Pühlhofer, G / Punch, M / Quirrenbach, A / Raab, S / Reimer, A / Reimer, O / Renaud, M / de Los Reyes, R / Rieger, F / Romoli, C / Rosier-Lees, S / Rowell, G / Rudak, B / Rulten, C B / Sahakian, V / Salek, D / Sanchez, D A / Santangelo, A / Sasaki, M / Schlickeiser, R / Schüssler, F / Schulz, A / Schwanke, U / Schwemmer, S / Settimo, M / Seyffert, A S / Shafi, N / Shilon, I / Simoni, R / Sol, H / Spanier, F / Spengler, G / Spies, F / Stawarz, Ł / Steenkamp, R / Stegmann, C / Stinzing, F / Stycz, K / Sushch, I / Tavernet, J-P / Tavernier, T / Taylor, A M / Terrier, R / Tibaldo, L / Tluczykont, M / Trichard, C / Tuffs, R / van der Walt, J / van Eldik, C / van Soelen, B / Vasileiadis, G / Veh, J / Venter, C / Viana, A / Vincent, P / Vink, J / Voisin, F / Völk, H J / Vuillaume, T / Wadiasingh, Z / Wagner, S J / Wagner, P / Wagner, R M / White, R / Wierzcholska, A / Willmann, P / Wörnlein, A / Wouters, D / Yang, R / Zabalza, V / Zaborov, D / Zacharias, M / Zdziarski, A A / Zech, A / Zefi, F / Ziegler, A / Żywucka, N

Physical review letters

2016 Volume 117, Issue 15, Page(s) 151302

Abstract: ... by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss ... the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S ... overlaps significantly in energy with previous Fermi-LAT and H.E.S.S.: Results: No significant excess ...

Abstract	A search for dark matter linelike signals iss performed in the vicinity of the Galactic Center by the H.E.S.S. experiment on observational data taken in 2014. An unbinned likelihood analysis iss developed to improve the sensitivity to linelike signals. The upgraded analysis along with newer data extend the energy coverage of the previous measurement down to 100 GeV. The 18 h of data collected with the H.E.S.S. array allow one to rule out at 95% C.L. the presence of a 130 GeV line (at l=-1.5°, b=0° and for a dark matter profile centered at this location) previously reported in Fermi-LAT data. This new analysis overlaps significantly in energy with previous Fermi-LAT and H.E.S.S. Results: No significant excess associated with dark matter annihilations was found in the energy range of 100 GeV to 2 TeV and upper limits on the gamma-ray flux and the velocity weighted annihilation cross section are derived adopting an Einasto dark matter halo profile. Expected limits for present and future large statistics H.E.S.S. observations are also given.
Language	English
Publishing date	2016-10-07
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.117.151302
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Flies from a tertiary hospital in Rwanda carry multidrug-resistant Gram-negative pathogens including extended-spectrum beta-lactamase-producing E. coli sequence type 131.

Heiden, Stefan E / Kurz, Mathis S E / Bohnert, Jürgen / Bayingana, Claude / Ndoli, Jules M / Sendegeya, Augustin / Gahutu, Jean Bosco / Eger, Elias / Mockenhaupt, Frank P / Schaufler, Katharina

Antimicrobial resistance and infection control

2020 Volume 9, Issue 1, Page(s) 34

Abstract: ... a high abundance of different MRGN including E. coli pathogenic lineage ST131 suggesting the important ...

Abstract	Multidrug-resistant gram-negative (MRGN) bacteria are a serious threat to global health. We used genomics to study MRGN obtained from houseflies in a tertiary Rwandan hospital. Our analysis revealed a high abundance of different MRGN including E. coli pathogenic lineage ST131 suggesting the important role of flies in disseminating highly virulent pathogens in clinical settings and beyond.
MeSH term(s)	Animals ; Diptera/microbiology ; Drug Resistance, Multiple, Bacterial ; Escherichia coli/classification ; Escherichia coli/genetics ; Escherichia coli/isolation & purification ; Genome, Bacterial ; Gram-Negative Bacteria/classification ; Gram-Negative Bacteria/genetics ; Gram-Negative Bacteria/isolation & purification ; Humans ; Plasmids/genetics ; Pseudomonas aeruginosa/classification ; Pseudomonas aeruginosa/genetics ; Pseudomonas aeruginosa/isolation & purification ; Rwanda ; Tertiary Care Centers ; Virulence Factors/genetics ; Whole Genome Sequencing/methods
Chemical Substances	Virulence Factors
Language	English
Publishing date	2020-02-17
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2666706-X
ISSN	2047-2994 ; 2047-2994
ISSN (online)	2047-2994
ISSN	2047-2994
DOI	10.1186/s13756-020-0696-y
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Article ; Online: Search for photon-linelike signatures from dark matter annihilations with H.E.S.S.

Abramowski, A / Acero, F / Aharonian, F / Akhperjanian, A G / Anton, G / Balenderan, S / Balzer, A / Barnacka, A / Becherini, Y / Becker Tjus, J / Bernlöhr, K / Birsin, E / Biteau, J / Bochow, A / Boisson, C / Bolmont, J / Bordas, P / Brucker, J / Brun, F /

Brun, P / Bulik, T / Carrigan, S / Casanova, S / Cerruti, M / Chadwick, P M / Chaves, R C G / Cheesebrough, A / Colafrancesco, S / Cologna, G / Conrad, J / Couturier, C / Dalton, M / Daniel, M K / Davids, I D / Degrange, B / Deil, C / deWilt, P / Dickinson, H J / Djannati-Ataï, A / Domainko, W / Drury, L O'C / Dubus, G / Dutson, K / Dyks, J / Dyrda, M / Egberts, K / Eger, P / Espigat, P / Fallon, L / Farnier, C / Fegan, S / Feinstein, F / Fernandes, M V / Fernandez, D / Fiasson, A / Fontaine, G / Förster, A / Füßling, M / Gajdus, M / Gallant, Y A / Garrigoux, T / Gast, H / Giebels, B / Glicenstein, J F / Glück, B / Göring, D / Grondin, M-H / Häffner, S / Hague, J D / Hahn, J / Hampf, D / Harris, J / Heinz, S / Heinzelmann, G / Henri, G / Hermann, G / Hillert, A / Hinton, J A / Hofmann, W / Hofverberg, P / Holler, M / Horns, D / Jacholkowska, A / Jahn, C / Jamrozy, M / Jung, I / Kastendieck, M A / Katarzyński, K / Katz, U / Kaufmann, S / Khélifi, B / Klepser, S / Klochkov, D / Kluźniak, W / Kneiske, T / Komin, Nu / Kosack, K / Kossakowski, R / Krayzel, F / Krüger, P P / Laffon, H / Lamanna, G / Lefaucheur, J / Lemoine-Goumard, M / Lenain, J-P / Lennarz, D / Lohse, T / Lopatin, A / Lu, C-C / Marandon, V / Marcowith, A / Masbou, J / Maurin, G / Maxted, N / Mayer, M / McComb, T J L / Medina, M C / Méhault, J / Menzler, U / Moderski, R / Mohamed, M / Moulin, E / Naumann, C L / Naumann-Godo, M / de Naurois, M / Nedbal, D / Nekrassov, D / Nguyen, N / Niemiec, J / Nolan, S J / Ohm, S / de Oña Wilhelmi, E / Opitz, B / Ostrowski, M / Oya, I / Panter, M / Parsons, R D / Paz Arribas, M / Pekeur, N W / Pelletier, G / Perez, J / Petrucci, P-O / Peyaud, B / Pita, S / Pühlhofer, G / Punch, M / Quirrenbach, A / Raue, M / Reimer, A / Reimer, O / Renaud, M / de Los Reyes, R / Rieger, F / Ripken, J / Rob, L / Rosier-Lees, S / Rowell, G / Rudak, B / Rulten, C B / Sahakian, V / Sanchez, D A / Santangelo, A / Schlickeiser, R / Schulz, A / Schwanke, U / Schwarzburg, S / Schwemmer, S / Sheidaei, F / Skilton, J L / Sol, H / Spengler, G / Stawarz, L / Steenkamp, R / Stegmann, C / Stinzing, F / Stycz, K / Sushch, I / Szostek, A / Tavernet, J-P / Terrier, R / Tluczykont, M / Trichard, C / Valerius, K / van Eldik, C / Vasileiadis, G / Venter, C / Viana, A / Vincent, P / Völk, H J / Volpe, F / Vorobiov, S / Vorster, M / Wagner, S J / Ward, M / White, R / Wierzcholska, A / Wouters, D / Zacharias, M / Zajczyk, A / Zdziarski, A A / Zech, A / Zechlin, H-S

Physical review letters

2013 Volume 110, Issue 4, Page(s) 41301

Abstract: Gamma-ray line signatures can be expected in the very-high-energy (E(γ)>100 GeV) domain due to self ... of magnitude in energy. Using data collected with the H.E.S.S. γ-ray instrument, upper limits on linelike ...

Abstract	Gamma-ray line signatures can be expected in the very-high-energy (E(γ)>100 GeV) domain due to self-annihilation or decay of dark matter (DM) particles in space. Such a signal would be readily distinguishable from astrophysical γ-ray sources that in most cases produce continuous spectra that span over several orders of magnitude in energy. Using data collected with the H.E.S.S. γ-ray instrument, upper limits on linelike emission are obtained in the energy range between ∼ 500 GeV and ∼ 25 TeV for the central part of the Milky Way halo and for extragalactic observations, complementing recent limits obtained with the Fermi-LAT instrument at lower energies. No statistically significant signal could be found. For monochromatic γ-ray line emission, flux limits of (2 × 10(-7) -2 × 10(-5)) m(-2) s(-1) sr(-1) and (1 × 10(-8) -2 × 10(-6)) m(-2) s(-1)sr(-1) are obtained for the central part of the Milky Way halo and extragalactic observations, respectively. For a DM particle mass of 1 TeV, limits on the velocity-averaged DM annihilation cross section ⟨σv⟩(χχ → γγ) reach ∼ 10(-27) cm(3)s(-1), based on the Einasto parametrization of the Galactic DM halo density profile.
Language	English
Publishing date	2013-01-25
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.110.041301
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Article ; Online: Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S.

Abramowski, A / Acero, F / Aharonian, F / Akhperjanian, A G / Anton, G / Barnacka, A / de Almeida, U Barres / Bazer-Bachi, A R / Becherini, Y / Becker, J / Behera, B / Bernlöhr, K / Bochow, A / Boisson, C / Bolmont, J / Bordas, P / Borrel, V / Brucker, J / Brun, F /

Brun, P / Bulik, T / Büsching, I / Carrigan, S / Casanova, S / Cerruti, M / Chadwick, P M / Charbonnier, A / Chaves, R C G / Cheesebrough, A / Chounet, L-M / Clapson, A C / Coignet, G / Conrad, J / Dalton, M / Daniel, M K / Davids, I D / Degrange, B / Deil, C / Dickinson, H J / Djannati-Ataï, A / Domainko, W / Drury, L O'C / Dubois, F / Dubus, G / Dyks, J / Dyrda, M / Egberts, K / Eger, P / Espigat, P / Fallon, L / Farnier, C / Fegan, S / Feinstein, F / Fernandes, M V / Fiasson, A / Fontaine, G / Förster, A / Füssling, M / Gallant, Y A / Gast, H / Gérard, L / Gerbig, D / Giebels, B / Glicenstein, J F / Glück, B / Goret, P / Göring, D / Hague, J D / Hampf, D / Hauser, M / Heinz, S / Heinzelmann, G / Henri, G / Hermann, G / Hinton, J A / Hoffmann, A / Hofmann, W / Hofverberg, P / Horns, D / Jacholkowska, A / de Jager, O C / Jahn, C / Jamrozy, M / Jung, I / Kastendieck, M A / Katarzyński, K / Katz, U / Kaufmann, S / Keogh, D / Kerschhaggl, M / Khangulyan, D / Khélifi, B / Klochkov, D / Kluźniak, W / Kneiske, T / Komin, Nu / Kosack, K / Kossakowski, R / Laffon, H / Lamanna, G / Lennarz, D / Lohse, T / Lopatin, A / Lu, C-C / Marandon, V / Marcowith, A / Masbou, J / Maurin, D / Maxted, N / McComb, T J L / Medina, M C / Méhault, J / Moderski, R / Moulin, E / Naumann, C L / Naumann-Godo, M / de Naurois, M / Nedbal, D / Nekrassov, D / Nguyen, N / Nicholas, B / Niemiec, J / Nolan, S J / Ohm, S / Olive, J-F / Wilhelmi, E de Oña / Opitz, B / Ostrowski, M / Panter, M / Arribas, M Paz / Pedaletti, G / Pelletier, G / Petrucci, P-O / Pita, S / Pühlhofer, G / Punch, M / Quirrenbach, A / Raue, M / Rayner, S M / Reimer, A / Reimer, O / Renaud, M / de los Reyes, R / Rieger, F / Ripken, J / Rob, L / Rosier-Lees, S / Rowell, G / Rudak, B / Rulten, C B / Ruppel, J / Ryde, F / Sahakian, V / Santangelo, A / Schlickeiser, R / Schöck, F M / Schönwald, A / Schwanke, U / Schwarzburg, S / Schwemmer, S / Shalchi, A / Sikora, M / Skilton, J L / Sol, H / Spengler, G / Stawarz, Ł / Steenkamp, R / Stegmann, C / Stinzing, F / Sushch, I / Szostek, A / Tavernet, J-P / Terrier, R / Tibolla, O / Tluczykont, M / Valerius, K / van Eldik, C / Vasileiadis, G / Venter, C / Vialle, J P / Viana, A / Vincent, P / Vivier, M / Völk, H J / Volpe, F / Vorobiov, S / Vorster, M / Wagner, S J / Ward, M / Wierzcholska, A / Zajczyk, A / Zdziarski, A A / Zech, A / Zechlin, H-S

Physical review letters

2011 Volume 106, Issue 16, Page(s) 161301

Abstract: ... The background-subtracted γ-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) γ-ray ...

Abstract	A search for a very-high-energy (VHE; ≥100 GeV) γ-ray signal from self-annihilating particle dark matter (DM) is performed towards a region of projected distance r∼45-150 pc from the Galactic center. The background-subtracted γ-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) γ-ray instrument in the energy range between 300 GeV and 30 TeV shows no hint of a residual γ-ray flux. Assuming conventional Navarro-Frenk-White and Einasto density profiles, limits are derived on the velocity-weighted annihilation cross section (σv) as a function of the DM particle mass. These are among the best reported so far for this energy range and in particular differ only little between the chosen density profile parametrizations. In particular, for the DM particle mass of ∼1 TeV, values for (σv) above 3×10(-25) cm(3) s(-1) are excluded for the Einasto density profile.
Language	English
Publishing date	2011-04-22
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.106.161301
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Article ; Online: emGraziaedessa/em emanastrephae/em (Heteroptera: Pentatomidae: Edessinae) a new genus and species collected in Multilure® fruit fly traps baited with ammonium acetate and putrescine.

Eger, Joseph E

Zootaxa

2021 Volume 4958, Issue 1, Page(s) zootaxa.4958.1.38

Abstract: Graziaedessa anastrephae (Heteroptera: Pentatomidae: Edessinae) a new genus and species collected in Multilure® fruit fly traps baited with ammonium acetate and putrescine. During a survey for fruit flies (Anastrepha spp., Diptera, Tephritidae) in Peru, ... ...

Abstract	Graziaedessa anastrephae (Heteroptera: Pentatomidae: Edessinae) a new genus and species collected in Multilure® fruit fly traps baited with ammonium acetate and putrescine. During a survey for fruit flies (Anastrepha spp., Diptera, Tephritidae) in Peru, specimens of a previously undescribed genus and species of Edessinae were collected in Multilure® fruit fly traps baited with a combination of ammonium acetate and putrescine. The new taxon, Graziaedessa anastrephae n. g., n. sp., resembles species of the edessine genus Hypoxys Amyot Serville but is smaller and the thoracic sternal structure is unique, consisting of an enlarged metasternal process which is bifurcate posteriorly but simple and rounded anteriorly, reaching for a short length onto the mesosternum and continued by a mesial carina on the mesosternum. Graziaedessa n. g. and G. anastrephae n. sp. are described and figured and compared to other genera of Edessinae.
MeSH term(s)	Acetates ; Animals ; Heteroptera/classification ; Putrescine ; Tephritidae
Chemical Substances	Acetates ; ammonium acetate (RRE756S6Q2) ; Putrescine (V10TVZ52E4)
Language	English
Publishing date	2021-04-14
Publishing country	New Zealand
Document type	Journal Article
ISSN	1175-5334
ISSN (online)	1175-5334
DOI	10.11646/zootaxa.4958.1.38
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Article: Did AI get more negative recently?

Beese, Dominik / Altunbaş, Begüm / Güzeler, Görkem / Eger, Steffen

Royal Society open science

2023 Volume 10, Issue 3, Page(s) 221159

Abstract: ... whether (ii) they mainly criticize the existing state-of-the-art, i.e. that it is deficient with respect ... to some property (e.g. wrong evaluation, wrong datasets, misleading task specification). We refer to contributions ...

Abstract	In this paper, we classify scientific articles in the domain of natural language processing (NLP) and machine learning (ML), as core subfields of artificial intelligence (AI), into whether (i) they extend the current state-of-the-art by the introduction of novel techniques which beat existing models or whether (ii) they mainly criticize the existing state-of-the-art, i.e. that it is deficient with respect to some property (e.g. wrong evaluation, wrong datasets, misleading task specification). We refer to contributions under (i) as having a 'positive stance' and contributions under (ii) as having a 'negative stance' (to related work). We annotate over 1.5 k papers from NLP and ML to train a SciBERT-based model to automatically predict the stance of a paper based on its title and abstract. We then analyse large-scale trends on over 41 k papers from the last approximately 35 years in NLP and ML, finding that papers have become substantially more positive over time, but negative papers also got more negative and we observe considerably more negative papers in recent years. Negative papers are also more influential in terms of citations they receive.
Language	English
Publishing date	2023-03-08
Publishing country	England
Document type	Journal Article
ZDB-ID	2787755-3
ISSN	2054-5703
ISSN	2054-5703
DOI	10.1098/rsos.221159
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Article ; Online: Social Stigma Towards People with Medically Unexplained Symptoms: the Somatic Symptom Disorder.

Eger Aydogmus, Melike

The Psychiatric quarterly

2020 Volume 91, Issue 2, Page(s) 349–361

Abstract: ... that stigma-related cognitions (i.e., dependency, dangerousness and responsibility) shaped people's affective ... i.e., anger and pity) and behavioral responses (i.e., social distance) to these people. The most ...

Abstract	The majority of previous studies on mental health stigma have focused on medically explained symptoms and the studies on medically unexplained symptoms (MUS) have only assessed the consequences of internalized stigma. A new category in DSM 5, named as somatic symptom disorder (SSD), includes multiple somatic disorders with medically-explained or -unexplained somatic symptoms. This study aimed to test the effects of social stigma on people with SSD with MUS depending on the attribution model. In a class environment, 348 college students from different regions in Turkey were presented with a vignette on a person with SSD with MUS and asked to complete a survey including demographics and attitudes towards that person. Along the same lines with previous findings for other mental disorders, the path analysis using AMOS revealed that stigma-related cognitions (i.e., dependency, dangerousness and responsibility) shaped people's affective (i.e., anger and pity) and behavioral responses (i.e., social distance) to these people. The most important predictor of social distance was pity and the level of contact was not related to social distance. In conclusion, anti-stigma interventions towards SSD with MUS should involve building empathy towards these patients and educating people about this disorder contrary to the recommended interventions for other mental health disorders stressing the importance of contact.
MeSH term(s)	Adolescent ; Adult ; Female ; Health Knowledge, Attitudes, Practice ; Humans ; Male ; Medically Unexplained Symptoms ; Social Stigma ; Somatoform Disorders/psychology ; Students ; Surveys and Questionnaires ; Turkey ; Young Adult
Language	English
Publishing date	2020-01-02
Publishing country	United States
Document type	Journal Article
ZDB-ID	207521-0
ISSN	1573-6709 ; 0033-2720
ISSN (online)	1573-6709
ISSN	0033-2720
DOI	10.1007/s11126-019-09704-6
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