Sökning: WFRF:(Omand Conor M. B.) > Minutes-duration op...
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000 | 02979naa a2200337 4500 | |
001 | oai:DiVA.org:su-225387 | |
003 | SwePub | |
008 | 240119s2023 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2253872 URI |
024 | 7 | a https://doi.org/10.1038/s41586-023-06673-62 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 Ho, Anna Y. Q.4 aut |
245 | 1 0 | a Minutes-duration optical flares with supernova luminosities |
264 | 1 | c 2023 |
338 | a print2 rdacarrier | |
520 | a In recent years, certain luminous extragalactic optical transients have been observed to last only a few days. Their short observed duration implies a different powering mechanism from the most common luminous extragalactic transients (supernovae), whose timescale is weeks. Some short-duration transients, most notably AT2018cow, show blue optical colours and bright radio and X-ray emission. Several AT2018cow-like transients have shown hints of a long-lived embedded energy source, such as X-ray variability, prolonged ultraviolet emission, a tentative X-ray quasiperiodic oscillation and large energies coupled to fast (but subrelativistic) radio-emitting ejecta. Here we report observations of minutes-duration optical flares in the aftermath of an AT2018cow-like transient, AT2022tsd (the ‘Tasmanian Devil’). The flares occur over a period of months, are highly energetic and are probably nonthermal, implying that they arise from a near-relativistic outflow or jet. Our observations confirm that, in some AT2018cow-like transients, the embedded energy source is a compact object, either a magnetar or an accreting black hole. | |
650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
700 | 1 | a Schulze, Steve,d 1980-u Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),Fysikum4 aut0 (Swepub:su)stsc6413 |
700 | 1 | a Omand, Conor M. B.,d 1992-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)coom9840 |
700 | 1 | a Pessi, Priscila Jael,d 1991-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)prpe8378 |
700 | 1 | a Sollerman, Jesper,d 1968-u Stockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)4 aut0 (Swepub:su)solle |
700 | 1 | a Zheng, WeiKang4 aut |
710 | 2 | a Stockholms universitetb Oskar Klein-centrum för kosmopartikelfysik (OKC)4 org |
773 | 0 | t Natureg 623:7989, s. 927-931q 623:7989<927-931x 0028-0836x 1476-4687 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-225387 |
856 | 4 8 | u https://doi.org/10.1038/s41586-023-06673-6 |
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