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pro vyhledávání: '"Bonnell, Jerry"'
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We derive a new peak lag vs. peak luminosity relation in gamma-ray burst (GRB) pulses. We demonstrate conclusively that GRB spectral lags are pulse rather than burst properties and show how the lag vs. luminosity relation determined from CCF measurem
Externí odkaz:
http://arxiv.org/abs/0803.1655
DisCan is a new algorithm implementing photon dispersion cancellation in order to measure energy-dependent delays in variable sources. This method finds the amount of reversed dispersion that optimally cancels any actual dispersion present. It applie
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610571
Autor:
Norris, Jay P., Bonnell, Jerry T.
Publikováno v:
Astrophys.J.643:266-275,2006
The recent association of several short gamma-ray bursts (GRBs) with early type galaxies with low star formation rate demonstrates that short bursts arise from a different progenitor mechanism than long bursts. However, since the duration distributio
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601190
Publikováno v:
Astrophys.J. 613 (2004) 484-491
We use the lag-luminosity relation to calculate self-consistently the redshifts, apparent peak bolometric luminosities L_B, and isotropic energies E_iso for a large sample of BATSE gamma-ray bursts. We consider two different forms of the lag-luminosi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0403220
We analyze BATSE 64-ms data for long gamma-ray bursts (T90 > 2.6 s), exploring the relationships between spectral lag, duration, and the number of distinct pulses per burst, Npulses. We measure durations using a brightness-independent technique. With
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105052
Publikováno v:
Phys.Rev.Lett. 86 (2001) 580
A new search for the gravitational lens effects of a significant cosmological density of supermassive compact objects (SCOs) on gamma-ray bursts has yielded a null result. We inspected the timing data of 774 BATSE-triggered GRBs for evidence of milli
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101488
GRBs vary more rapidly than any other known cosmological phenomena. The lower limits of this variability have not yet been explored. Improvements in detectors would reveal or limit the actual rate of short GRBs. Were microsecond "spike" GRBs to exist
Externí odkaz:
http://arxiv.org/abs/astro-ph/9712172
Bayesian Blocks is a new time series algorithm for detecting localized structures (spikes or shots), revealing pulse shapes, and generally characterizing intensity variations. It maps raw counting data into a maximum likelihood piecewise constant rep
Externí odkaz:
http://arxiv.org/abs/astro-ph/9712016