'Short grbs' diaporamas de présentation

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Magnetars are magnetically powered, rotating neutron stars

Magnetars are magnetically powered, rotating neutron stars. RADIO PULSARS 2000 discovered to date Radiate covering most of the electromagnetic spectrum Rotate with periods that span five decades (ms to a few hours). Are powered by their own rotational energy,

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Swift Observations of GRBs

Swift Observations of GRBs. David Burrows The Pennsylvania State University. 20 November 2004. GRBs and Swift. UVOT. BAT. BAT. XRT. UVOT. XRT. Spacecraft. Swift Instruments. Burst Alert Telescope (BAT) 15-150 keV 2 sr field of view CdZnTe detectors

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John Nousek (Penn State University)

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Gamma-Ray Bursts

Gamma-Ray Bursts. Brian McBreen. Short and Long GRBs. Short GRBs (T 90 < 2s) Tend to be spectrally harder; i.e. have a higher proportion of high-energy ?-rays relative to low-energy ?-rays. Long. Short. Long GRBs (T> 2s)

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Searches for gravitational waves from supernovae and long GRBs

Searches for gravitational waves from supernovae and long GRBs. Maurice H.P.M. van Putten Korea Institute for Advanced Study, Seoul, South Korea. APCTP 2012, POSTECH. Core-collapse supernova 1987A (Chandra-X image/NASA). spin. Kerr BH. spin. Core-collapse supernova 1987A

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Unravelling short GRBs with LIGO , Swift and GLAST

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Gravitational waves from short Gamma-Ray Bursts Dafne Guetta (Rome Obs.)

Gravitational waves from short Gamma-Ray Bursts Dafne Guetta (Rome Obs.) My collaborators: Luigi Stella, David Eichler, Eli Waxman, Tsvi Piran. Two different classes of Gamma-Ray Bursts. GRBs duration distribution is bimodal (e.g. Briggs et al. 2002)

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G RB afterglows from long-lived r everse s hocks.

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Short GRBs and Mergers: Astrophysical constraints on a BH-NS and NS-NS origin

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Testing a two-jet model of short Gamma-ray bursts

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Prompt Emission Properties of Swift GRBs

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Recent Progress in Theoretical Understanding of GRBs from Fermi LAT and GBM Results

Deciphering the Ancient Universe with GRBs Kyoto, Japan 19-23 April 2010. Recent Progress in Theoretical Understanding of GRBs from Fermi LAT and GBM Results. Chuck Dermer Naval Research Laboratory Washington, DC USA charles.dermer@nrl.navy.mil On behalf of the Fermi Collaboration

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Revisiting the Gamma-Ray Burst Classification in the Fermi Era

Revisiting the Gamma-Ray Burst Classification in the Fermi Era. ? ? ? ?????? / ?????? ???? ? ? ??? ???. Open Questions in GRB Physics (Zhang 2011). Classification Progenitor Central engine Ejecta composition Energy dissipation and particle acceleration mechanism

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Short GRBs and their Progenitors (in the era of pre-Gravitational Waves)

Short GRBs and their Progenitors (in the era of pre-Gravitational Waves). Wen-fai Fong Harvard University Advisor: Edo Berger. GRB 070809 ACS/F606W. LIGO Open Data Workshop, Livingston, LA 10.27.2011. Outline. 1. Introduction to GRBs and our program

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Gamma Ray Bursts

Gamma Ray Bursts. A High Energy Mystery By Tessa Vernstrom Ast 4001, Fall 2007. Briefly: What are They?.

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The Swift GRB MIDEX Mission

The Swift GRB MIDEX Mission. Neil Gehrels NASA-GSFC Beyond Einstein Meeting May 13, 2004. Completed Swift Observatory in GSFC Clean Room !! Launch from KSC Planned for Sept. or Oct. 2004. Swift Designed to Answer GRB Key Questions. What is the nature of subclasses?. What causes GRBs?.

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Alessandra Corsi (1,2) Dafne Guetta (3) & Luigi Piro (2)

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Different spectral correlation between short and long GRBs with Suzaku

Masnori Ohno (ISAS/JAXA). Different spectral correlation between short and long GRBs with Suzaku. Long/Short GRBs are different ?. There are two GRB classes, Long/Short GRBs in T90 distribution Different origin ? Hardness ratio; short/hard, long/soft (Kouvelioutou et al. 1993)

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