Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Bonnell, J. T."'
Publikováno v:
Astrophys.J. 627 (2005) 324-345
Currently, the best available probe of the early phase of gamma-ray burst (GRB) jet attributes is the prompt gamma-ray emission, in which several intrinsic and extrinsic variables determine GRB pulse evolution. Bright, usually complex bursts have man
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503383
Using the lag-luminosity relation and various BATSE catalogs we create a large catalog of burst redshifts, peak luminosities and emitted energies. These catalogs permit us to evaluate the lag-luminosity relation, and to study the burst energy distrib
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312336
Autor:
Norris, J. P., Bonnell, J. T.
The connection between SNe and GRBs, launched by SN 1998bw/GRB 980425 and clinched by SN 2003dh/GRB 030329 -- with the two GRBs differing by a factor of approximately 50000 in luminosity -- so far suggests a rough upper limit of ~ 1-2 days for the de
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312279
We analyze BATSE time-tagged event (TTE) data for short gamma-ray bursts (T90 duration < 2.6 s), studying spectral lag vs. peak flux and duration, as well as the number of distinct pulse structures per burst. Performing the cross-correlation between
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105108
The fast temporal structures and cosmological distances of gamma-ray bursts (GRBs) afford a natural laboratory for testing theories of frequency-dependent propagation of high-energy photons, as predicted for quantum gravity (QG). We calibrate the sen
Externí odkaz:
http://arxiv.org/abs/astro-ph/9912136
Autor:
Bonnell, J. T., Norris, J. P.
The inhomogeneous brightness distribution of BATSE detected gamma-ray bursts has been considered strong evidence for their cosmological origin. However, subclasses of gamma-ray bursts have been shown to have significantly more homogeneous brightness
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905319
Publikováno v:
Astrophys.J. 534 (2000) 248-257
We suggest a connection between the pulse paradigm at gamma-ray energies and the recently demonstrated luminosity distribution in gamma-ray bursts: the spectral evolution timescale of pulse structures is anticorrelated with peak luminosity, and with
Externí odkaz:
http://arxiv.org/abs/astro-ph/9903233
If dark matter in the form of compact objects comprises a large fraction of the mass of the universe, then gravitational lensing effects on gamma-ray bursts are expected. We utilize BATSE and Ulysses data to search for lenses of different mass ranges
Externí odkaz:
http://arxiv.org/abs/astro-ph/9810391
We explore the hypothesis, similar to one recently suggested by Bloom and colleagues, that some nearby supernovae are associated with smooth, single-pulse gamma-ray bursts, possibly having no emission above ~ 300 keV. We examine BATSE bursts with dur
Externí odkaz:
http://arxiv.org/abs/astro-ph/9807322
Recent claims of angular correlations between gamma-ray bursts (GRBs) and clusters of galaxies are evaluated in light of existing but previously uncorrelated GRB positional data. Additional GRB data sets we use include sub-samples of soft BATSE 3B bu
Externí odkaz:
http://arxiv.org/abs/astro-ph/9607158