The unusual afterglow of GRB 980326: evidence for the gamma-ray burst/supernova connection
نویسندگان
چکیده
Palomar Observatory 105-24, Caltech, Pasadena, CA 91125, USA National Radio Astronomy Observatory, P. O. Box O, Socorro, NM 87801, USA Department of Astronomy, University of California, Berkeley, CA 94720-3411 USA National Optical Astronomy Observatories, 950 N. Cherry, Ave. Tucson, AZ 85719, USA Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, 7000 East Avenue, P. O. Box 808, L-413, Livermore, CA 94551-9900, USA Center for Particle Astrophysics, University of California, Berkeley, CA 94720 USA Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA European Southern Observatory, D-85748 Garching, Germany Istituto di Astrofisica Spaziale, CNR, via Fosso del Cavaliere, Roma I-00133, Italy
منابع مشابه
GRB 970228 Revisited: Evidence for a Supernova in the Light Curve and Late Spectral Energy Distribution of the Afterglow
Although at the time of its discovery, the optical and X-ray afterglow of GRB 970228 appeared to be a ringing endorsement of the previously untried relativistic blastwave model of gamma-ray burst (GRB) afterglows, now that nearly a dozen optical afterglows to GRBs have been observed, the wavering light curve and reddening spectrum of this afterglow make it perhaps the most difficult of the obse...
متن کاملThe Unusual Afterglow of Grb 980326: Evidence for the Gamma-ray Burst/supernova Connection the Supernova Interpretation Implications of the Supernova Connection
We are making this m.s. available on astroph given the rapid progress in the eld of GRBs. You are free to refer to this paper in your own paper. However, we do place restrictions on any dissemination in the popular media. The article is under embargo until it is published. For further enquiries, please contact Shri Kulkarni ([email protected]) or Joshua Bloom Cosmic gamma-ray bursts (GRBs) ...
متن کاملLight Curves and Spectra of Dust Echoes From Gamma - Ray Bursts and their Afterglows : Continued Evidence that GRB 970228 is Associated with a Supernova
The relative brightening and reddening of the optical afterglows of GRB 970228 and GRB 980326 around 20 – 30 days after these bursts have been attributed to supernovae, which are red (blueward of their spectral peak), and which peak in time after ≈ 20(1 + z) days. However, this direct evidence for a GRB/SN connection has recently been challenged. It has been suggested that the late afterglows o...
متن کاملLight Curves and Spectra of Dust Echoes From Gamma - Ray Bursts and their
The relative brightening and reddening of the optical afterglows of GRB 970228 and GRB 980326 around 20 – 30 days after these bursts have been attributed to supernovae, which are red (blueward of their spectral peak), and which peak in time after ≈ 20(1 + z) days. However, this direct evidence for a GRB/SN connection has recently been challenged. It has been suggested that the late afterglows o...
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The deviation from the power-law decline of the optical flux observed in GRB 970228 and GRB 980326 has been used recently to argue in favor of the connection between gamma-ray bursts and supernovae. We consider an alternative explanation for this phenomenon, based on the scattering of a prompt optical burst by 0.1 M middle dot in circle dust located beyond its sublimation radius 0.1-1 pc from t...
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