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  1. AU="Lorimer, D. R."
  2. AU="Peh, Kelvin S-H"
  3. AU="Hossein Safarpour"
  4. AU="Hall, Frances"
  5. AU="Weckmann, U."
  6. AU="Martínez-Sáez, O"
  7. AU="dos Santos, Alejandra Filippo Gonzalez Neves"
  8. AU="Beverly Castillo Herrera"
  9. AU="Fatin Izzati Abdul Hadi"
  10. AU="Musinguzi, Nicholas"
  11. AU=Lee Edward Y
  12. AU="Raval, Urdhva"
  13. AU="Senn, L Kirsten"
  14. AU="Matsutani, Noriyuki"
  15. AU="Bernstein, Herbert J"
  16. AU="Elisa Impresari"
  17. AU="Feldman, Noa"
  18. AU="Dhingra, Mandeep Singh"

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Treffer 1 - 10 von insgesamt 19

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  1. Artikel: Binary and Millisecond Pulsars.

    Lorimer, D R

    Living reviews in relativity

    1998  Band 1, Heft 1, Seite(n) 10

    Abstract: Our knowledge of binary and millisecond pulsars has greatly increased in recent years. This is largely due to the success of large-area surveys which have brought the known population of such systems in the Galactic disk to around 50. As well as being ... ...

    Abstract Our knowledge of binary and millisecond pulsars has greatly increased in recent years. This is largely due to the success of large-area surveys which have brought the known population of such systems in the Galactic disk to around 50. As well as being interesting as a population of astronomical sources, many pulsars turn out to be superb celestial clocks. In this review we summarise the main properties of binary and millisecond pulsars and highlight some of their applications to relativistic astrophysics.
    Electronic supplementary material: Supplementary material is available for this article at 10.12942/lrr-1998-10.
    Sprache Englisch
    Erscheinungsdatum 1998-09-25
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article ; Review
    ISSN 1433-8351
    ISSN 1433-8351
    DOI 10.12942/lrr-1998-10
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: A bimodal burst energy distribution of a repeating fast radio burst source.

    Li, D / Wang, P / Zhu, W W / Zhang, B / Zhang, X X / Duan, R / Zhang, Y K / Feng, Y / Tang, N Y / Chatterjee, S / Cordes, J M / Cruces, M / Dai, S / Gajjar, V / Hobbs, G / Jin, C / Kramer, M / Lorimer, D R / Miao, C C /
    Niu, C H / Niu, J R / Pan, Z C / Qian, L / Spitler, L / Werthimer, D / Zhang, G Q / Wang, F Y / Xie, X Y / Yue, Y L / Zhang, L / Zhi, Q J / Zhu, Y

    Nature

    2021  Band 598, Heft 7880, Seite(n) 267–271

    Abstract: The event rate, energy distribution and time-domain behaviour of repeating fast radio bursts (FRBs) contain essential information regarding their physical nature and central engine, which are as yet ... ...

    Abstract The event rate, energy distribution and time-domain behaviour of repeating fast radio bursts (FRBs) contain essential information regarding their physical nature and central engine, which are as yet unknown
    Sprache Englisch
    Erscheinungsdatum 2021-10-13
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-021-03878-5
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Author Correction: A bimodal burst energy distribution of a repeating fast radio burst source.

    Li, D / Wang, P / Zhu, W W / Zhang, B / Zhang, X X / Duan, R / Zhang, Y K / Feng, Y / Tang, N Y / Chatterjee, S / Cordes, J M / Cruces, M / Dai, S / Gajjar, V / Hobbs, G / Jin, C / Kramer, M / Lorimer, D R / Miao, C C /
    Niu, C H / Niu, J R / Pan, Z C / Qian, L / Spitler, L / Werthimer, D / Zhang, G Q / Wang, F Y / Xie, X Y / Yue, Y L / Zhang, L / Zhi, Q J / Zhu, Y

    Nature

    2021  Band 601, Heft 7891, Seite(n) E1

    Sprache Englisch
    Erscheinungsdatum 2021-12-15
    Erscheinungsland England
    Dokumenttyp Published Erratum
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-021-04178-8
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: A Bright Millisecond Radio Burst of Extragalactic Origin

    Lorimer, D.R / Bailes, M / Crawford, F / McLaughlin, M.A / Narkevic, D.J

    Science. 2007 Nov. 2, v. 318, no. 5851

    2007  

    Abstract: Pulsar surveys offer a rare opportunity to monitor the radio sky for impulsive burst-like events with millisecond durations. We analyzed archival survey data and found a 30-jansky dispersed burst, less than 5 milliseconds in duration, located 3° from ... ...

    Abstract Pulsar surveys offer a rare opportunity to monitor the radio sky for impulsive burst-like events with millisecond durations. We analyzed archival survey data and found a 30-jansky dispersed burst, less than 5 milliseconds in duration, located 3° from the Small Magellanic Cloud. The burst properties argue against a physical association with our Galaxy or the Small Magellanic Cloud. Current models for the free electron content in the universe imply that the burst is less than 1 gigaparsec distant. No further bursts were seen in 90 hours of additional observations, which implies that it was a singular event such as a supernova or coalescence of relativistic objects. Hundreds of similar events could occur every day and, if detected, could serve as cosmological probes.
    Schlagwörter models ; radio waves ; surveys
    Sprache Englisch
    Erscheinungsverlauf 2007-1102
    Umfang p. 777-780.
    Erscheinungsort American Association for the Advancement of Science
    Dokumenttyp Artikel
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1147532
    Datenquelle NAL Katalog (AGRICOLA)

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  5. Artikel ; Online: A bright millisecond radio burst of extragalactic origin.

    Lorimer, D R / Bailes, M / McLaughlin, M A / Narkevic, D J / Crawford, F

    Science (New York, N.Y.)

    2007  Band 318, Heft 5851, Seite(n) 777–780

    Abstract: Pulsar surveys offer a rare opportunity to monitor the radio sky for impulsive burst-like events with millisecond durations. We analyzed archival survey data and found a 30-jansky dispersed burst, less than 5 milliseconds in duration, located 3 degrees ... ...

    Abstract Pulsar surveys offer a rare opportunity to monitor the radio sky for impulsive burst-like events with millisecond durations. We analyzed archival survey data and found a 30-jansky dispersed burst, less than 5 milliseconds in duration, located 3 degrees from the Small Magellanic Cloud. The burst properties argue against a physical association with our Galaxy or the Small Magellanic Cloud. Current models for the free electron content in the universe imply that the burst is less than 1 gigaparsec distant. No further bursts were seen in 90 hours of additional observations, which implies that it was a singular event such as a supernova or coalescence of relativistic objects. Hundreds of similar events could occur every day and, if detected, could serve as cosmological probes.
    Sprache Englisch
    Erscheinungsdatum 2007-11-02
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1147532
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: A periodically active pulsar giving insight into magnetospheric physics.

    Kramer, M / Lyne, A G / O'Brien, J T / Jordan, C A / Lorimer, D R

    Science (New York, N.Y.)

    2006  Band 312, Heft 5773, Seite(n) 549–551

    Abstract: PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5 to 10 days long. However, when the radio emission ceases, it switches off in less than 10 seconds and remains undetectable for the next 25 to 35 days, ... ...

    Abstract PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5 to 10 days long. However, when the radio emission ceases, it switches off in less than 10 seconds and remains undetectable for the next 25 to 35 days, then switches on again. This pattern repeats quasi-periodically. The origin of this behavior is unclear. Even more remarkably, the pulsar rotation slows down 50% faster when it is on than when it is off. This indicates a massive increase in magnetospheric currents when the pulsar switches on, proving that pulsar wind plays a substantial role in pulsar spin-down. This allows us, for the first time, to estimate the magnetospheric currents in a pulsar magnetosphere during the occurrence of radio emission.
    Sprache Englisch
    Erscheinungsdatum 2006-04-28
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1124060
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel: A Periodically Active Pulsar Giving Insight into Magnetospheric Physics

    Kramer, M / Jordan, C. A / Lorimer, D. R / Lyne, A. G / O'Brien, J. T

    Science. 2006 Apr. 28, v. 312, no. 5773

    2006  

    Abstract: PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5 to 10 days long. However, when the radio emission ceases, it switches off in less than 10 seconds and remains undetectable for the next 25 to 35 days, ... ...

    Abstract PSR B1931+24 (J1933+2421) behaves as an ordinary isolated radio pulsar during active phases that are 5 to 10 days long. However, when the radio emission ceases, it switches off in less than 10 seconds and remains undetectable for the next 25 to 35 days, then switches on again. This pattern repeats quasi-periodically. The origin of this behavior is unclear. Even more remarkably, the pulsar rotation slows down 50% faster when it is on than when it is off. This indicates a massive increase in magnetospheric currents when the pulsar switches on, proving that pulsar wind plays a substantial role in pulsar spin-down. This allows us, for the first time, to estimate the magnetospheric currents in a pulsar magnetosphere during the occurrence of radio emission.
    Schlagwörter geophysics ; magnetism ; radio ; wind
    Sprache Englisch
    Erscheinungsverlauf 2006-0428
    Umfang p. 549-551.
    Erscheinungsort American Association for the Advancement of Science
    Dokumenttyp Artikel
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1124060
    Datenquelle NAL Katalog (AGRICOLA)

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  8. Artikel ; Online: A millisecond pulsar in a stellar triple system.

    Ransom, S M / Stairs, I H / Archibald, A M / Hessels, J W T / Kaplan, D L / van Kerkwijk, M H / Boyles, J / Deller, A T / Chatterjee, S / Schechtman-Rook, A / Berndsen, A / Lynch, R S / Lorimer, D R / Karako-Argaman, C / Kaspi, V M / Kondratiev, V I / McLaughlin, M A / van Leeuwen, J / Rosen, R /
    Roberts, M S E / Stovall, K

    Nature

    2014  Band 505, Heft 7484, Seite(n) 520–524

    Abstract: Gravitationally bound three-body systems have been studied for hundreds of years and are common in our Galaxy. They show complex orbital interactions, which can constrain the compositions, masses and interior structures of the bodies and test theories of ...

    Abstract Gravitationally bound three-body systems have been studied for hundreds of years and are common in our Galaxy. They show complex orbital interactions, which can constrain the compositions, masses and interior structures of the bodies and test theories of gravity, if sufficiently precise measurements are available. A triple system containing a radio pulsar could provide such measurements, but the only previously known such system, PSR B1620-26 (refs 7, 8; with a millisecond pulsar, a white dwarf, and a planetary-mass object in an orbit of several decades), shows only weak interactions. Here we report precision timing and multiwavelength observations of PSR J0337+1715, a millisecond pulsar in a hierarchical triple system with two other stars. Strong gravitational interactions are apparent and provide the masses of the pulsar M[Symbol: see text](1.4378(13), where M[Symbol: see text]is the solar mass and the parentheses contain the uncertainty in the final decimal places) and the two white dwarf companions (0.19751(15)M[Symbol: see text] and 0.4101(3))M[Symbol: see text], as well as the inclinations of the orbits (both about 39.2°). The unexpectedly coplanar and nearly circular orbits indicate a complex and exotic evolutionary past that differs from those of known stellar systems. The gravitational field of the outer white dwarf strongly accelerates the inner binary containing the neutron star, and the system will thus provide an ideal laboratory in which to test the strong equivalence principle of general relativity.
    Sprache Englisch
    Erscheinungsdatum 2014-01-05
    Erscheinungsland England
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature12917
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Buch ; Online: The NANOGrav 11-year Data Set

    Madison, D. R. / Cordes, J. M. / Arzoumanian, Z. / Chatterjee, S. / Crowter, K. / DeCesar, M. E. / Demorest, P. B. / Dolch, T. / Ellis, J. A. / Ferdman, R. D. / Ferrara, E. C. / Fonseca, E. / Gentile, P. A. / Jones, G. / Jones, M. L. / Lam, M. T. / Levin, L. / Lorimer, D. R. / Lynch, R. S. /
    McLaughlin, M. A. / Mingarelli, C. M. F. / Ng, C. / Nice, D. J. / Pennucci, T. T. / Ransom, S. M. / Ray, P. S. / Spiewak, R. / Stairs, I. H. / Stovall, K. / Swiggum, J. K. / Zhu, W.

    Solar Wind Sounding Through Pulsar Timing

    2018  

    Abstract: The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has observed dozens of millisecond pulsars for over a decade. We have accrued a large collection of dispersion measure (DM) measurements sensitive to the total electron content ... ...

    Abstract The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has observed dozens of millisecond pulsars for over a decade. We have accrued a large collection of dispersion measure (DM) measurements sensitive to the total electron content between Earth and the pulsars at each observation. All lines of sight cross through the solar wind which produces correlated DM fluctuations in all pulsars. We develop and apply techniques for extracting the imprint of the solar wind from the full collection of DM measurements in the recently released NANOGrav 11-yr data set. We filter out long time scale DM fluctuations attributable to structure in the interstellar medium and carry out a simultaneous analysis of all pulsars in our sample that can differentiate the correlated signature of the wind from signals unique to individual lines of sight. When treating the solar wind as spherically symmetric and constant in time, we find the electron number density at 1 A.U. to be $7.9\pm0.2$ cm$^{-3}$. Our data shows little evidence of long-term variation in the density of the wind. We argue that our techniques paired with a high cadence, low radio frequency observing campaign of near-ecliptic pulsars would be capable of mapping out large-scale latitudinal structure in the wind.

    Comment: 15 pages, submitted to ApJ
    Schlagwörter Astrophysics - Solar and Stellar Astrophysics
    Thema/Rubrik (Code) 551
    Erscheinungsdatum 2018-08-21
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  10. Artikel ; Online: A double-pulsar system: a rare laboratory for relativistic gravity and plasma physics.

    Lyne, A G / Burgay, M / Kramer, M / Possenti, A / Manchester, R N / Camilo, F / McLaughlin, M A / Lorimer, D R / D'Amico, N / Joshi, B C / Reynolds, J / Freire, P C C

    Science (New York, N.Y.)

    2004  Band 303, Heft 5661, Seite(n) 1153–1157

    Abstract: The clocklike properties of pulsars moving in the gravitational fields of their unseen neutron-star companions have allowed unique tests of general relativity and provided evidence for gravitational radiation. We report here the detection of the 2.8- ... ...

    Abstract The clocklike properties of pulsars moving in the gravitational fields of their unseen neutron-star companions have allowed unique tests of general relativity and provided evidence for gravitational radiation. We report here the detection of the 2.8-second pulsar J0737-3039B as the companion to the 23-millisecond pulsar J0737-3039A in a highly relativistic double neutron star system, allowing unprecedented tests of fundamental gravitational physics. We observed a short eclipse of J0737-3039A by J0737-3039B and orbital modulation of the flux density and the pulse shape of J0737-3039B, probably because of the influence of J0737-3039A's energy flux on its magnetosphere. These effects will allow us to probe magneto-ionic properties of a pulsar magnetosphere.
    Sprache Englisch
    Erscheinungsdatum 2004-02-20
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.1094645
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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