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(WFRF:(Copperwheat Chris M.)) pers:(Bhalerao Varun)
 

Sökning: (WFRF:(Copperwheat Chris M.)) pers:(Bhalerao Varun) > The fast, luminous ...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005880naa a2201129 4500
001oai:DiVA.org:su-168412
003SwePub
008190506s2019 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1684122 URI
024a https://doi.org/10.1093/mnras/sty34202 DOI
040 a (SwePub)su
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Perley, Daniel A.4 aut
2451 0a The fast, luminous ultraviolet transient AT2018cow :b extreme supernova, or disruption of a star by an intermediate-mass black hole?
264 c 2018-12-22
264 1b Oxford University Press (OUP),c 2019
338 a print2 rdacarrier
520 a Wide-field optical surveys have begun to uncover large samples of fast (t(rise) less than or similar to 5 d), luminous (M-peak < 18), blue transients. While commonly attributed to the breakout of a supernova shock into a dense wind, the great distances to the transients of this class found so far have hampered detailed investigation of their properties. We present photometry and spectroscopy from a comprehensive worldwide campaign to observe AT 2018cow (ATLAS 18qqn), the first fast-luminous optical transient to be found in real time at low redshift. Our first spectra (<2 days after discovery) are entirely featureless. A very broad absorption feature suggestive of near-relativistic velocities develops between 3 and 8 days, then disappears. Broad emission features of H and He develop after >10 days. The spectrum remains extremely hot throughout its evolution, and the photospheric radius contracts with time (receding below R < 10 (14) cm after 1 month). This behaviour does not match that of any known supernova, although a relativistic jet within a fallback supernova could explain some of the observed features. Alternatively, the transient could originate from the disruption of a star by an intermediate-mass black hole, although this would require long-lasting emission of highly super-Eddington thermal radiation. In either case, AT 2018cow suggests that the population of fast luminous transients represents a new class of astrophysical event. Intensive follow-up of this event in its late phases, and of any future events found at comparable distance, will be essential to better constrain their origins.
650 7a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng
653 a Black hole
653 a stars
653 a supernovae: general
653 a supernova: individual: AT2018cow
700a Mazzali, Paolo A.4 aut
700a Yan, Lin4 aut
700a Cenko, S. Bradley4 aut
700a Gezari, Suvi4 aut
700a Taggart, Kirsty4 aut
700a Blagorodnova, Nadia4 aut
700a Fremling, Christoffer4 aut
700a Mockler, Brenna4 aut
700a Singh, Avinash4 aut
700a Tominaga, Nozomu4 aut
700a Tanaka, Masaomi4 aut
700a Watson, Alan M.4 aut
700a Ahumada, Tomas4 aut
700a Anupama, G. C.4 aut
700a Ashall, Chris4 aut
700a Becerra, Rosa L.4 aut
700a Bersier, David4 aut
700a Bhalerao, Varun4 aut
700a Bloom, Joshua S.4 aut
700a Butler, Nathaniel R.4 aut
700a Copperwheat, Chris4 aut
700a Coughlin, Michael W.4 aut
700a De, Kishalay4 aut
700a Drake, Andrew J.4 aut
700a Duev, Dmitry A.4 aut
700a Frederick, Sara4 aut
700a Jesus Gonzalez, J.4 aut
700a Goobar, Arielu Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)ariel
700a Heida, Marianne4 aut
700a Ho, Anna Y. Q.4 aut
700a Horst, John4 aut
700a Hung, Tiara4 aut
700a Itoh, Ryosuke4 aut
700a Jencson, Jacob E.4 aut
700a Kasliwal, Mansi M.4 aut
700a Kawai, Nobuyuki4 aut
700a Khanam, Tanazza4 aut
700a Kulkarni, Shrinivas R.4 aut
700a Kumar, Brajesh4 aut
700a Kumar, Harsh4 aut
700a Kutyrev, Alexander S.4 aut
700a Lee, William H.4 aut
700a Maeda, Keiichi4 aut
700a Mahabal, Ashish4 aut
700a Murata, Katsuhiro L.4 aut
700a Neill, James D.4 aut
700a Ngeow, Chow-Choong4 aut
700a Penprase, Bryan4 aut
700a Pian, Elena4 aut
700a Quimby, Robert4 aut
700a Ramirez-Ruiz, Enrico4 aut
700a Richer, Michael G.4 aut
700a Roman-Zuniga, Carlos G.4 aut
700a Sahu, D. K.4 aut
700a Srivastav, Shubham4 aut
700a Socia, Quentin4 aut
700a Sollerman, Jesperu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)solle
700a Tachibana, Yutaro4 aut
700a Taddia, Francescou Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)ftadd
700a Tinyanont, Samaporn4 aut
700a Troja, Eleonora4 aut
700a Ward, Charlotte4 aut
700a Wee, Jerrick4 aut
700a Yu, Po-Chieh4 aut
710a Stockholms universitetb Fysikum4 org
773t Monthly notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 484:1, s. 1031-1049q 484:1<1031-1049x 0035-8711x 1365-2966
856u https://doi.org/10.1093/mnras/sty3420y Fulltext
856u https://academic.oup.com/mnras/article-pdf/484/1/1031/27577371/sty3420.pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-168412
8564 8u https://doi.org/10.1093/mnras/sty3420

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