Sökning: (WFRF:(Copperwheat Chris M.)) pers:(Bhalerao Varun) > The fast, luminous ...
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000 | 05880naa a2201129 4500 | |
001 | oai:DiVA.org:su-168412 | |
003 | SwePub | |
008 | 190506s2019 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1684122 URI |
024 | 7 | a https://doi.org/10.1093/mnras/sty34202 DOI |
040 | a (SwePub)su | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Perley, Daniel A.4 aut |
245 | 1 0 | a 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 | 1 | b 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 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
653 | a Black hole | |
653 | a stars | |
653 | a supernovae: general | |
653 | a supernova: individual: AT2018cow | |
700 | 1 | a Mazzali, Paolo A.4 aut |
700 | 1 | a Yan, Lin4 aut |
700 | 1 | a Cenko, S. Bradley4 aut |
700 | 1 | a Gezari, Suvi4 aut |
700 | 1 | a Taggart, Kirsty4 aut |
700 | 1 | a Blagorodnova, Nadia4 aut |
700 | 1 | a Fremling, Christoffer4 aut |
700 | 1 | a Mockler, Brenna4 aut |
700 | 1 | a Singh, Avinash4 aut |
700 | 1 | a Tominaga, Nozomu4 aut |
700 | 1 | a Tanaka, Masaomi4 aut |
700 | 1 | a Watson, Alan M.4 aut |
700 | 1 | a Ahumada, Tomas4 aut |
700 | 1 | a Anupama, G. C.4 aut |
700 | 1 | a Ashall, Chris4 aut |
700 | 1 | a Becerra, Rosa L.4 aut |
700 | 1 | a Bersier, David4 aut |
700 | 1 | a Bhalerao, Varun4 aut |
700 | 1 | a Bloom, Joshua S.4 aut |
700 | 1 | a Butler, Nathaniel R.4 aut |
700 | 1 | a Copperwheat, Chris4 aut |
700 | 1 | a Coughlin, Michael W.4 aut |
700 | 1 | a De, Kishalay4 aut |
700 | 1 | a Drake, Andrew J.4 aut |
700 | 1 | a Duev, Dmitry A.4 aut |
700 | 1 | a Frederick, Sara4 aut |
700 | 1 | a Jesus Gonzalez, J.4 aut |
700 | 1 | a Goobar, Arielu Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)ariel |
700 | 1 | a Heida, Marianne4 aut |
700 | 1 | a Ho, Anna Y. Q.4 aut |
700 | 1 | a Horst, John4 aut |
700 | 1 | a Hung, Tiara4 aut |
700 | 1 | a Itoh, Ryosuke4 aut |
700 | 1 | a Jencson, Jacob E.4 aut |
700 | 1 | a Kasliwal, Mansi M.4 aut |
700 | 1 | a Kawai, Nobuyuki4 aut |
700 | 1 | a Khanam, Tanazza4 aut |
700 | 1 | a Kulkarni, Shrinivas R.4 aut |
700 | 1 | a Kumar, Brajesh4 aut |
700 | 1 | a Kumar, Harsh4 aut |
700 | 1 | a Kutyrev, Alexander S.4 aut |
700 | 1 | a Lee, William H.4 aut |
700 | 1 | a Maeda, Keiichi4 aut |
700 | 1 | a Mahabal, Ashish4 aut |
700 | 1 | a Murata, Katsuhiro L.4 aut |
700 | 1 | a Neill, James D.4 aut |
700 | 1 | a Ngeow, Chow-Choong4 aut |
700 | 1 | a Penprase, Bryan4 aut |
700 | 1 | a Pian, Elena4 aut |
700 | 1 | a Quimby, Robert4 aut |
700 | 1 | a Ramirez-Ruiz, Enrico4 aut |
700 | 1 | a Richer, Michael G.4 aut |
700 | 1 | a Roman-Zuniga, Carlos G.4 aut |
700 | 1 | a Sahu, D. K.4 aut |
700 | 1 | a Srivastav, Shubham4 aut |
700 | 1 | a Socia, Quentin4 aut |
700 | 1 | a Sollerman, Jesperu Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)solle |
700 | 1 | a Tachibana, Yutaro4 aut |
700 | 1 | a Taddia, Francescou Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)ftadd |
700 | 1 | a Tinyanont, Samaporn4 aut |
700 | 1 | a Troja, Eleonora4 aut |
700 | 1 | a Ward, Charlotte4 aut |
700 | 1 | a Wee, Jerrick4 aut |
700 | 1 | a Yu, Po-Chieh4 aut |
710 | 2 | a Stockholms universitetb Fysikum4 org |
773 | 0 | t 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 |
856 | 4 | u https://doi.org/10.1093/mnras/sty3420y Fulltext |
856 | 4 | u https://academic.oup.com/mnras/article-pdf/484/1/1031/27577371/sty3420.pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-168412 |
856 | 4 8 | u https://doi.org/10.1093/mnras/sty3420 |
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