Search: onr:"swepub:oai:DiVA.org:su-118539" > A CORRELATED STUDY ...
Fältnamn | Indikatorer | Metadata |
---|---|---|
000 | 03774naa a2200541 4500 | |
001 | oai:DiVA.org:su-118539 | |
003 | SwePub | |
008 | 150622s2015 | |||||||||||000 ||eng| | |
009 | oai:DiVA.org:kth-172241 | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1185392 URI |
024 | 7 | a https://doi.org/10.1088/0004-637X/805/1/132 DOI |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1722412 URI |
040 | a (SwePub)sud (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Li, Liangu KTH,Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC),KTH Royal Institute of Technology, Sweden,Partikel- och astropartikelfysik4 aut0 (Swepub:kth)P000000 |
245 | 1 0 | a A CORRELATED STUDY OF OPTICAL AND X-RAY AFTERGLOWS OF GRBs |
264 | 1 | c 2015 |
338 | a print2 rdacarrier | |
500 | a QC 20150821 | |
520 | a We study an extensive sample of 87 gamma-ray bursts (GRBs) for which there are well-sampled and simultaneous optical and X-ray light curves. We extract the cleanest possible signal of the afterglow component. and compare the temporal behaviors of the X-ray light. curve, observed by Swift XRT, and optical data, observed by UVOT and ground-based telescopes for each individual burst. Overall we find that 62% of the GRBs. are consistent with the standard afterglow model. When more advanced modeling is invoked, up to 91% of the bursts in our sample may be consistent with the external-shock model. A large fraction of these bursts are consistent with occurring in a constant interstellar density medium (61%) while only 39% of them occur in a wind-like medium. Only nine cases have afterglow light curves that exactly match the standard fireball model prediction, having a single power-law decay in both energy bands that are observed during their entire duration. In particular, for the bursts with chromatic behavior, additional model assumptions must be made over limited segments of the light curves in order for these bursts to fully agree with the external-shock model. Interestingly, for 54% of the X-ray and 40% of the optical band observations, the end of the shallow decay (t(similar to-0.5)) period coincides with the jet-break (t(similar to-p)) time, causing an abrupt change in decay slope. The fraction of the burst that is consistent with the external-shock model is independent of the observational epochs in the rest frame of GRBs. Moreover, no cases can be explained by the cooling frequency crossing the X-ray or optical band. | |
650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
653 | a methods: statistical | |
653 | a reference systems | |
653 | a X-rays: ISM | |
653 | a Theoretical Physics | |
653 | a teoretisk fysik | |
700 | 1 | a Wu, Xue-Feng4 aut |
700 | 1 | a Huang, Yong-Feng4 aut |
700 | 1 | a Wang, Xiang-Gao4 aut |
700 | 1 | a Tang, Qing-Wen4 aut |
700 | 1 | a Liang, Yun-Feng4 aut |
700 | 1 | a Zhang, Bin-Bin4 aut |
700 | 1 | a Wang, Yu4 aut |
700 | 1 | a Geng, Jin-Jun4 aut |
700 | 1 | a Liang, En-Wei4 aut |
700 | 1 | a Wei, Jian-Yan4 aut |
700 | 1 | a Zhang, Bing4 aut |
700 | 1 | a Ryde, Felixu KTH,Partikel- och astropartikelfysik4 aut0 (Swepub:kth)u1tlyg6w |
710 | 2 | a Stockholms universitetb Fysikum4 org |
773 | 0 | t Astrophysical Journalg 805:1q 805:1x 0004-637Xx 1538-4357 |
856 | 4 | u https://arxiv.org/abs/1503.00976y arXiv:1503.00976 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-118539 |
856 | 4 8 | u https://doi.org/10.1088/0004-637X/805/1/13 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-172241 |
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