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  1. Article: The missing link.

    Kulkarni, Shri

    Nature

    2002  Volume 419, Issue 6903, Page(s) 121–123

    Language English
    Publishing date 2002-09-12
    Publishing country England
    Document type Comment ; News
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/419121a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Uncovering a population of gravitational lens galaxies with magnified standard candle SN Zwicky.

    Goobar, Ariel / Johansson, Joel / Schulze, Steve / Arendse, Nikki / Carracedo, Ana Sagués / Dhawan, Suhail / Mörtsell, Edvard / Fremling, Christoffer / Yan, Lin / Perley, Daniel / Sollerman, Jesper / Joseph, Rémy / Hinds, K-Ryan / Meynardie, William / Andreoni, Igor / Bellm, Eric / Bloom, Josh / Collett, Thomas E / Drake, Andrew /
    Graham, Matthew / Kasliwal, Mansi / Kulkarni, Shri R / Lemon, Cameron / Miller, Adam A / Neill, James D / Nordin, Jakob / Pierel, Justin / Richard, Johan / Riddle, Reed / Rigault, Mickael / Rusholme, Ben / Sharma, Yashvi / Stein, Robert / Stewart, Gabrielle / Townsend, Alice / Vinko, Jozsef / Wheeler, J Craig / Wold, Avery

    Nature astronomy

    2023  Volume 7, Issue 9, Page(s) 1098–1107

    Abstract: Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a stellar explosion in a distant galaxy and observing it through a nearly ... ...

    Abstract Detecting gravitationally lensed supernovae is among the biggest challenges in astronomy. It involves a combination of two very rare phenomena: catching the transient signal of a stellar explosion in a distant galaxy and observing it through a nearly perfectly aligned foreground galaxy that deflects light towards the observer. Here we describe how high-cadence optical observations with the Zwicky Transient Facility, with its unparalleled large field of view, led to the detection of a multiply imaged type Ia supernova, SN Zwicky, also known as SN 2022qmx. Magnified nearly 25-fold, the system was found thanks to the standard candle nature of type Ia supernovae. High-spatial-resolution imaging with the Keck telescope resolved four images of the supernova with very small angular separation, corresponding to an Einstein radius of only
    Language English
    Publishing date 2023-06-12
    Publishing country England
    Document type Journal Article
    ISSN 2397-3366
    ISSN (online) 2397-3366
    DOI 10.1038/s41550-023-01981-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A 12.4-day periodicity in a close binary system after a supernova.

    Chen, Ping / Gal-Yam, Avishay / Sollerman, Jesper / Schulze, Steve / Post, Richard S / Liu, Chang / Ofek, Eran O / Das, Kaustav K / Fremling, Christoffer / Horesh, Assaf / Katz, Boaz / Kushnir, Doron / Kasliwal, Mansi M / Kulkarni, Shri R / Liu, Dezi / Liu, Xiangkun / Miller, Adam A / Rose, Kovi / Waxman, Eli /
    Yang, Sheng / Yao, Yuhan / Zackay, Barak / Bellm, Eric C / Dekany, Richard / Drake, Andrew J / Fang, Yuan / Fynbo, Johan P U / Groom, Steven L / Helou, George / Irani, Ido / Jegou du Laz, Theophile / Liu, Xiaowei / Mazzali, Paolo A / Neill, James D / Qin, Yu-Jing / Riddle, Reed L / Sharon, Amir / Strotjohann, Nora L / Wold, Avery / Yan, Lin

    Nature

    2024  Volume 625, Issue 7994, Page(s) 253–258

    Abstract: Neutron stars and stellar-mass black holes are the remnants of massive star ... ...

    Abstract Neutron stars and stellar-mass black holes are the remnants of massive star explosions
    Language English
    Publishing date 2024-01-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06787-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Relativistic baryonic jets from an ultraluminous supersoft X-ray source.

    Liu, Ji-Feng / Bai, Yu / Wang, Song / Justham, Stephen / Lu, You-Jun / Gu, Wei-Min / Liu, Qing-Zhong / Di Stefano, Rosanne / Guo, Jin-Cheng / Cabrera-Lavers, Antonio / Álvarez, Pedro / Cao, Yi / Kulkarni, Shri

    Nature

    2015  Volume 528, Issue 7580, Page(s) 108–110

    Abstract: The formation of relativistic jets by an accreting compact object is one of the fundamental mysteries of astrophysics. Although the theory is poorly understood, observations of relativistic jets from systems known as microquasars (compact binary stars) ... ...

    Abstract The formation of relativistic jets by an accreting compact object is one of the fundamental mysteries of astrophysics. Although the theory is poorly understood, observations of relativistic jets from systems known as microquasars (compact binary stars) have led to a well established phenomenology. Relativistic jets are not expected to be produced by sources with soft or supersoft X-ray spectra, although two such systems are known to produce relatively low-velocity bipolar outflows. Here we report the optical spectra of an ultraluminous supersoft X-ray source (ULS) in the nearby galaxy M81 (M81 ULS-1; refs 9, 10). Unexpectedly, the spectra show blueshifted, broad Hα emission lines, characteristic of baryonic jets with relativistic speeds. These time-variable emission lines have projected velocities of about 17 per cent of the speed of light, and seem to be similar to those from the prototype microquasar SS 433 (refs 11, 12). Such relativistic jets are not expected to be launched from white dwarfs, and an origin from a black hole or a neutron star is hard to reconcile with the persistence of M81 ULS-1's soft X-rays. Thus the unexpected presence of relativistic jets in a ULS challenges canonical theories of jet formation, but might be explained by a long-speculated, supercritically accreting black hole with optically thick outflows.
    Language English
    Publishing date 2015-12-03
    Publishing country England
    Document type Journal Article ; 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/nature15751
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Minutes-duration optical flares with supernova luminosities.

    Ho, Anna Y Q / Perley, Daniel A / Chen, Ping / Schulze, Steve / Dhillon, Vik / Kumar, Harsh / Suresh, Aswin / Swain, Vishwajeet / Bremer, Michael / Smartt, Stephen J / Anderson, Joseph P / Anupama, G C / Awiphan, Supachai / Barway, Sudhanshu / Bellm, Eric C / Ben-Ami, Sagi / Bhalerao, Varun / de Boer, Thomas / Brink, Thomas G /
    Burruss, Rick / Chandra, Poonam / Chen, Ting-Wan / Chen, Wen-Ping / Cooke, Jeff / Coughlin, Michael W / Das, Kaustav K / Drake, Andrew J / Filippenko, Alexei V / Freeburn, James / Fremling, Christoffer / Fulton, Michael D / Gal-Yam, Avishay / Galbany, Lluís / Gao, Hua / Graham, Matthew J / Gromadzki, Mariusz / Gutiérrez, Claudia P / Hinds, K-Ryan / Inserra, Cosimo / A J, Nayana / Karambelkar, Viraj / Kasliwal, Mansi M / Kulkarni, Shri / Müller-Bravo, Tomás E / Magnier, Eugene A / Mahabal, Ashish A / Moore, Thomas / Ngeow, Chow-Choong / Nicholl, Matt / Ofek, Eran O / Omand, Conor M B / Onori, Francesca / Pan, Yen-Chen / Pessi, Priscila J / Petitpas, Glen / Polishook, David / Poshyachinda, Saran / Pursiainen, Miika / Riddle, Reed / Rodriguez, Antonio C / Rusholme, Ben / Segre, Enrico / Sharma, Yashvi / Smith, Ken W / Sollerman, Jesper / Srivastav, Shubham / Strotjohann, Nora Linn / Suhr, Mark / Svinkin, Dmitry / Wang, Yanan / Wiseman, Philip / Wold, Avery / Yang, Sheng / Yang, Yi / Yao, Yuhan / Young, David R / Zheng, WeiKang

    Nature

    2023  Volume 623, Issue 7989, Page(s) 927–931

    Abstract: In recent years, certain luminous extragalactic optical transients have been observed to last only a few ... ...

    Abstract In recent years, certain luminous extragalactic optical transients have been observed to last only a few days
    Language English
    Publishing date 2023-11-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/s41586-023-06673-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: An ancient nova shell around the dwarf nova Z Camelopardalis.

    Shara, Michael M / Martin, Christopher D / Seibert, Mark / Rich, R Michael / Salim, Samir / Reitzel, David / Schiminovich, David / Deliyannis, Constantine P / Sarrazine, Angela R / Kulkarni, Shri R / Ofek, Eran O / Brosch, Noah / Lépine, Sebastien / Zurek, David / De Marco, Orsola / Jacoby, George

    Nature

    2007  Volume 446, Issue 7132, Page(s) 159–162

    Abstract: Cataclysmic variables (classical novae and dwarf novae) are binary star systems in which a red dwarf transfers hydrogen-rich matter, by way of an accretion disk, to its white dwarf companion. In dwarf novae, an instability is believed to episodically ... ...

    Abstract Cataclysmic variables (classical novae and dwarf novae) are binary star systems in which a red dwarf transfers hydrogen-rich matter, by way of an accretion disk, to its white dwarf companion. In dwarf novae, an instability is believed to episodically dump much of the accretion disk onto the white dwarf. The liberation of gravitational potential energy then brightens these systems by up to 100-fold every few weeks or months. Thermonuclear-powered eruptions thousands of times more luminous occur in classical novae, accompanied by significant mass ejection and formation of clearly visible shells from the ejected material. Theory predicts that the white dwarfs in all dwarf novae must eventually accrete enough mass to undergo classical nova eruptions. Here we report a shell, an order of magnitude more extended than those detected around many classical novae, surrounding the prototypical dwarf nova Z Camelopardalis. The derived shell mass matches that of classical novae, and is inconsistent with the mass expected from a dwarf nova wind or a planetary nebula. The shell observationally links the prototypical dwarf nova Z Camelopardalis with an ancient nova eruption and the classical nova process.
    Language English
    Publishing date 2007-03-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 120714-3
    ISSN 1476-4687 ; 0028-0836
    ISSN (online) 1476-4687
    ISSN 0028-0836
    DOI 10.1038/nature05576
    Database MEDical Literature Analysis and Retrieval System OnLINE

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