dc.contributor.author | Schady, P. | |
dc.contributor.author | Zhang, B. B. | |
dc.contributor.author | Zhang, B. | |
dc.contributor.author | Holland, S. T. | |
dc.contributor.author | Kennea, J. A. | |
dc.contributor.author | Kuin, N. P. M. | |
dc.contributor.author | Oates, S. R. | |
dc.contributor.author | Page, K. L. | |
dc.contributor.author | DE PASQUALE, Massımılıano | |
dc.contributor.author | Swenson, C. A. | |
dc.contributor.author | Maxham, A. | |
dc.contributor.author | Roming, P. W. A. | |
dc.contributor.author | Vetere, L. | |
dc.date.accessioned | 2022-02-18T09:52:06Z | |
dc.date.available | 2022-02-18T09:52:06Z | |
dc.date.issued | 2010 | |
dc.identifier.citation | Swenson C. A. , Maxham A., Roming P. W. A. , Schady P., Vetere L., Zhang B. B. , Zhang B., Holland S. T. , Kennea J. A. , Kuin N. P. M. , et al., "GRB 090926A AND BRIGHT LATE-TIME FERMI LARGE AREA TELESCOPE GAMMA-RAY BURST AFTERGLOWS", ASTROPHYSICAL JOURNAL LETTERS, cilt.718, sa.1, 2010 | |
dc.identifier.issn | 2041-8205 | |
dc.identifier.other | av_66a7275e-b5ba-4d9d-9227-3bd2ab122f1b | |
dc.identifier.other | vv_1032021 | |
dc.identifier.uri | http://hdl.handle.net/20.500.12627/178139 | |
dc.identifier.uri | https://doi.org/10.1088/2041-8205/718/1/l14 | |
dc.description.abstract | GRB 090926A was detected by both the Gamma-ray Burst Monitor and Large Area Telescope (LAT) instruments on board the Fermi Gamma-ray Space Telescope. Swift follow-up observations began similar to 13 hr after the initial trigger. The optical afterglow was detected for nearly 23 days post trigger, placing it in the long-lived category. The afterglow is of particular interest due to its brightness at late times, as well as the presence of optical flares at T0+10(5) s and later, which may indicate late-time central engine activity. The LAT has detected a total of 16 gamma-ray bursts; nine of these bursts, including GRB 090926A, also have been observed by Swift. Of the nine Swift-observed LAT bursts, six were detected by UVOT, with five of the bursts having bright, long-lived optical afterglows. In comparison, Swift has been operating for five years and has detected nearly 500 bursts, but has only seen similar to 30% of bursts with optical afterglows that live longer than 10(5) s. We have calculated the predicted gamma-ray fluence, as would have been seen by the Burst Alert Telescope ( BAT) on board Swift, of the LAT bursts to determine whether this high percentage of long-lived optical afterglows is unique, when compared to BAT-triggered bursts. We find that, with the exception of the short burst GRB 090510A, the predicted BAT fluences indicate that the LAT bursts are more energetic than 88% of all Swift bursts and also have brighter than average X-ray and optical afterglows. | |
dc.language.iso | eng | |
dc.subject | Astronomy and Astrophysics | |
dc.subject | ASTRONOMİ VE ASTROFİZİK | |
dc.subject | Uzay bilimi | |
dc.subject | Temel Bilimler (SCI) | |
dc.subject | Fizik | |
dc.subject | Astronomi ve Astrofizik | |
dc.subject | Temel Bilimler | |
dc.subject | Physics and Astronomy (miscellaneous) | |
dc.subject | General Physics and Astronomy | |
dc.subject | Space and Planetary Science | |
dc.subject | Physical Sciences | |
dc.title | GRB 090926A AND BRIGHT LATE-TIME FERMI LARGE AREA TELESCOPE GAMMA-RAY BURST AFTERGLOWS | |
dc.type | Makale | |
dc.relation.journal | ASTROPHYSICAL JOURNAL LETTERS | |
dc.contributor.department | Pennsylvania State University , , | |
dc.identifier.volume | 718 | |
dc.identifier.issue | 1 | |
dc.contributor.firstauthorID | 3378045 | |