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Modified over 4 years ago
Lecture 5: Gamma-Ray Bursts Light extinction:
GRBs are brief flashes of soft -ray radiation ( 100 keV), discovered in the 1970s, the origin of which was not known until 1997 CGRO-BATSE
CGRO spectrum of a GRB
Light curves of GRBs Fluence ~ if cosmological relativistic conditions are implied: Lorentz factor CGRO-BATSE (Fishman & Meegan 1995)
The GRB distribution is isotropic
Bimodal distribution of GRB durations short long Different progenitors: SNe vs binary NS mergers Kulkarni 2000 Duration (s)
Precisione di BATSE 1 grado
1996-2002: The BeppoSAX revolution Wide Field Cameras
Precisione di BATSE 1 grado Precisione delle WFC di BSAX
8 hours3 days GRB970228: first detection of X-ray and optical afterglow 6 months later Costa et al. 1997 Van Paradijs et al. 1997
Firecone model: relativistic shocks in a jet ~ 100 ~ 10
Early Multiwavelength Counterparts (z = 0.937) Bloom et al. 2008 (z = 6.29) (z = 1.6)
Redshift Measurement Djorgovski et al. 1999
Bloom et al. 1998,1999 Host galaxies exhibit emission lines of star formation: [O II], [O III], Balmer and Paschen series
Isotropic irradiated gamma–ray energy vs redshift Long GRB Short GRB
GRB980425 Supernova 1998bw (Type Ic) z = 0.0085
Example of Supernova underlying GRB optical afterglow (z = 0.695) Galama et al. 1999
Light curves of Ic SNe: GRB-SNe, broad-lined SNe, normal SNe
1 Observations of the Bump associated with GRB A Massimo Della Valle INAF-Arcetri Venezia, Giugno 2006.
Gamma Ray Burst Afterglows and Host Galaxies James E. Rhoads Space Telescope Science Institute.
Jerry Fishman NASA - Marshall Space Flight Center National Space Science and Technology Center (NSSTC) Huntsville, AL AAVSO – HEA3 - Las Cruces, NM - March.
E. Pian – LNGS, 13 Sep 2005 Elena Pian - INAF, Trieste Astronomical Observatory, Italy LNGS Summer Institute 2005 GRB: Modern Status.
Vanessa Mangano - Venice 2006 Rest frame light curves of Swift GRBs Vanessa Mangano, Giancarlo Cusumano, Valentina La Parola, Eleonora Troja, Teresa Mineo.
Insights from Radio Wavelengths into Supernova Progenitors Laura Chomiuk Jansky Fellow, Michigan State University.
GRB : a canonical fake short burst L. Caito, M.G. Bernardini, C.L. Bianco, M.G. Dainotti, R. Guida, R. Ruffini. 3 rd Stueckelberg Workshop July 8–18,
SOFT GAMMA REPEATERS Kevin Hurley UC Berkeley Space Sciences Laboratory THE SGR-SHORT BURST CONNECTION Kevin Hurley UC Berkeley Space Sciences Laboratory.
Ryo Yamazaki (Osaka University, Japan) With K. Ioka, F. Takahara, and N. Shibazaki.
Bruce Gendre Osservatorio di Roma / ASI Science Data Center Recent activities from the TAROT/Zadko network.
Supernovae Supernova Remnants Gamma-Ray Bursts. Summary of Post-Main-Sequence Evolution of Stars M > 8 M sun M < 4 M sun Subsequent ignition of nuclear.
Yun-Wei YU 俞云伟 June 22, 2010, Hong Kong. Outline Background Implications from the shallow decay afterglows of GRBs A qualitative discussion on magnetar.
Neutrinos as probes of ultra-high energy astrophysical phenomena Jenni Adams, University of Canterbury, New Zealand.
Low-luminosity GRBs and Relativistic shock breakouts Ehud Nakar Tel Aviv University Omer Bromberg Tsvi Piran Re’em Sari 2nd EUL Workshop on Gamma-Ray Bursts.
Wen-fai Fong Harvard University Advisor: Edo Berger LIGO Open Data Workshop, Livingston, LA GRB ACS/F606W.
Gamma-Ray Burst Optical Observations with AST3 Xue-Feng Wu Xue-Feng Wu Chinese Center for Antarctic Astronomy, Chinese Center for Antarctic Astronomy,
Going out with a bang: HSTs continuing contribution to gamma-ray bursts Andrew Levan University of Warwick.
A high z (z~6.3) GRB-- GRB Reported by Bubu 2006 Mar.17.
Spectral Energy Correlations in BATSE long GRB Guido Barbiellini and Francesco Longo University and INFN, Trieste In collaboration with A.Celotti and Z.Bosnjak.
Gamma-ray bursts Discovered in 1968 by Vela spy satellites
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