Matches in SemOpenAlex for { <https://semopenalex.org/work/W2885371123> ?p ?o ?g. }
- W2885371123 endingPage "1049" @default.
- W2885371123 startingPage "1031" @default.
- W2885371123 abstract "Wide-field optical surveys have begun to uncover large samples of fast (trise ≲ 5 d), luminous (Mpeak < −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 < 1014 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." @default.
- W2885371123 created "2018-08-22" @default.
- W2885371123 creator A5003803425 @default.
- W2885371123 creator A5007384804 @default.
- W2885371123 creator A5011140321 @default.
- W2885371123 creator A5011900515 @default.
- W2885371123 creator A5018595778 @default.
- W2885371123 creator A5021501281 @default.
- W2885371123 creator A5023053944 @default.
- W2885371123 creator A5024878038 @default.
- W2885371123 creator A5025428806 @default.
- W2885371123 creator A5025429352 @default.
- W2885371123 creator A5026039471 @default.
- W2885371123 creator A5026987048 @default.
- W2885371123 creator A5027345553 @default.
- W2885371123 creator A5028904496 @default.
- W2885371123 creator A5029210401 @default.
- W2885371123 creator A5030458910 @default.
- W2885371123 creator A5030545448 @default.
- W2885371123 creator A5032412484 @default.
- W2885371123 creator A5037106832 @default.
- W2885371123 creator A5037193532 @default.
- W2885371123 creator A5040958083 @default.
- W2885371123 creator A5043683443 @default.
- W2885371123 creator A5043891525 @default.
- W2885371123 creator A5047037347 @default.
- W2885371123 creator A5047469533 @default.
- W2885371123 creator A5048134047 @default.
- W2885371123 creator A5049896358 @default.
- W2885371123 creator A5051988894 @default.
- W2885371123 creator A5053537156 @default.
- W2885371123 creator A5054376343 @default.
- W2885371123 creator A5054690880 @default.
- W2885371123 creator A5054951883 @default.
- W2885371123 creator A5056247138 @default.
- W2885371123 creator A5056485618 @default.
- W2885371123 creator A5057189567 @default.
- W2885371123 creator A5058190590 @default.
- W2885371123 creator A5059173977 @default.
- W2885371123 creator A5060056714 @default.
- W2885371123 creator A5061763832 @default.
- W2885371123 creator A5064897101 @default.
- W2885371123 creator A5066351733 @default.
- W2885371123 creator A5066370947 @default.
- W2885371123 creator A5066446964 @default.
- W2885371123 creator A5067913774 @default.
- W2885371123 creator A5068837797 @default.
- W2885371123 creator A5069198265 @default.
- W2885371123 creator A5069235173 @default.
- W2885371123 creator A5070146422 @default.
- W2885371123 creator A5072177912 @default.
- W2885371123 creator A5073000032 @default.
- W2885371123 creator A5074183149 @default.
- W2885371123 creator A5077627222 @default.
- W2885371123 creator A5078782186 @default.
- W2885371123 creator A5079065025 @default.
- W2885371123 creator A5079210253 @default.
- W2885371123 creator A5079302480 @default.
- W2885371123 creator A5082167610 @default.
- W2885371123 creator A5083842903 @default.
- W2885371123 creator A5085143798 @default.
- W2885371123 creator A5086466363 @default.
- W2885371123 creator A5088348055 @default.
- W2885371123 creator A5089039466 @default.
- W2885371123 creator A5089439078 @default.
- W2885371123 creator A5091159368 @default.
- W2885371123 creator A5091758976 @default.
- W2885371123 date "2018-12-22" @default.
- W2885371123 modified "2023-10-17" @default.
- W2885371123 title "The fast, luminous ultraviolet transient AT2018cow: extreme supernova, or disruption of a star by an intermediate-mass black hole?" @default.
- W2885371123 cites W1537652385 @default.
- W2885371123 cites W1604181701 @default.
- W2885371123 cites W1894385335 @default.
- W2885371123 cites W1913860194 @default.
- W2885371123 cites W1947049367 @default.
- W2885371123 cites W1968127565 @default.
- W2885371123 cites W1970660289 @default.
- W2885371123 cites W1987027895 @default.
- W2885371123 cites W1994368354 @default.
- W2885371123 cites W1995522939 @default.
- W2885371123 cites W1996537612 @default.
- W2885371123 cites W1996932215 @default.
- W2885371123 cites W2006785706 @default.
- W2885371123 cites W2018836338 @default.
- W2885371123 cites W2021620550 @default.
- W2885371123 cites W2029343094 @default.
- W2885371123 cites W2034163100 @default.
- W2885371123 cites W2034830473 @default.
- W2885371123 cites W2035672370 @default.
- W2885371123 cites W2035879704 @default.
- W2885371123 cites W2041704914 @default.
- W2885371123 cites W2044093857 @default.
- W2885371123 cites W2052937506 @default.
- W2885371123 cites W2053583292 @default.
- W2885371123 cites W2053831110 @default.
- W2885371123 cites W2054582333 @default.
- W2885371123 cites W2057110940 @default.
- W2885371123 cites W2067073045 @default.