Results 11 to 20 of about 2,282,133 (297)

Gamma-Ray Bursts [PDF]

Science, 2012
Stellar Explosions Stars that are born with masses greater than eight times that of the Sun end their lives in luminous explosions known as supernovae. Over the past decade, access to improved sky surveys has revealed rare types of supernovae that are much more luminous than any of those that were known before.
Gehrels, Neil, Meszaros, Peter
openaire   +4 more sources

The color of gamma-ray bursts

AIP Conference Proceedings, 1994
We present preliminary results of a study of BATSE spectra of gamma‐ray bursts (GRBs). Our ultimate aim is to investigate short‐duration as well as long‐duration GRBs and to focus the analysis on possible similarities and differences between the two populations. We present here spectral properties obtained from both time‐integrated counts and from time‐
DE PAOLIS, Francesco, S. Pezzuto, M. Tavani   +2 more
openaire   +3 more sources

Cosmography by gamma ray bursts [PDF]

Astronomy & Astrophysics, 2008
Summary: Aims. Relations connecting gamma ray burst quantities can be used to constrain cosmographic parameters of the Hubble law at medium-high redshifts. Methods. We consider a sample of 27 gamma ray bursts to construct the luminosity distance to redshift relation and derive the values of the parameters \(q_{0}, j_{0}\), and \(s_{0}\).
CAPOZZIELLO, SALVATORE, L. Izzo
openaire   +4 more sources

Experimental Measurements and Computer Simulation of Fission Product Gamma-Ray Spectra [PDF]

, 1997
Airborne gamma ray spectrometry using high volume scintillation detectors, optionally in conjunction with Ge detectors, has potential for making rapid environmental measurements in response to nuclear accidents. An experimental investigation and computer
Sanderson, D.C.W., McConville, P., Department of the Environment, Transport and the Regions: Radioactive Substances Division, Cresswell, A., Allyson, J.D.   +4 more
core   +6 more sources

ON GAMMA-RAY BURSTS [PDF]

The Eleventh Marcel Grossmann Meeting, 2008
(Shortened) We show by example how the uncoding of Gamma-Ray Bursts (GRBs) offers unprecedented possibilities to foster new knowledge in fundamental physics and in astrophysics. After recalling some of the classic work on vacuum polarization in uniform electric fields by Klein, Sauter, Heisenberg, Euler and Schwinger, we summarize some of the efforts ...
R. RUFFINI, M.G. BERNARDINI, C. L. BIANCO, L. CAITO, P. CHARDONNET, C. CHERUBINI, M. G. DAINOTTI, F. FRASCHETTI, A. GERALICO, R. GUIDA, B. PATRICELLI, M. ROTONDO, J. A. RUEDA HERNANDEZ, G. VERESHCHAGIN, S. S. XUE   +14 more
openaire   +5 more sources

Superlong gamma-ray bursts [PDF]

Astronomy Letters, 2005
Before the BATSE/GRO launch GRBs seem to be a uniform phenomenon with duration up to about 100 seconds. The BATSE has detected many events longer than 100 s and a few longer than 500s. We performed the off-line scan of the 1024 ms continuous BATSE records and revealed several non-triggered episodes of the BATSE GRB triggers which confidently belong to ...
Tikhomirova, Ya., Stern, B. E.
openaire   +2 more sources

LOCALIZATION OF GAMMA-RAY BURSTS USING THE FERMI GAMMA-RAY BURST MONITOR [PDF]

The Astrophysical Journal Supplement Series, 2015
The Fermi Gamma-ray Burst Monitor (GBM) has detected over 1400 Gamma-Ray Bursts (GRBs) since it began science operations in July, 2008. We use a subset of over 300 GRBs localized by instruments such as Swift, the Fermi Large Area Telescope, INTEGRAL, and MAXI, or through triangulations from the InterPlanetary Network (IPN), to analyze the accuracy of ...
V. Connaughton, M. S. Briggs, A. Goldstein, C. A. Meegan, W. S. Paciesas, R. D. Preece, C. A. Wilson-Hodge, M. H. Gibby, J. Greiner, D. Gruber, P. Jenke, R. M. Kippen, V. Pelassa, S. Xiong, H.-F. Yu, P. N. Bhat, J. M. Burgess, D. Byrne, G. Fitzpatrick, S. Foley, M. M. Giles, S. Guiriec, A. J. van der Horst, A. von Kienlin, S. McBreen, S. McGlynn, D. Tierney, B.-B. Zhang   +27 more
openaire   +5 more sources

Gamma-ray bursts [PDF]

Reports on Progress in Physics, 2006
Gamma-ray bursts are the most luminous explosions in the Universe, and their origin and mechanism are the focus of intense research and debate. More than three decades after their discovery, and after pioneering breakthroughs from space and ground experiments, their study is entering a new phase with the recently launched Swift satellite. The interplay
openaire   +4 more sources

The Swift satellite and redshifts of long gamma-ray bursts [PDF]

, 2006
Until 6 October 2005 sixteen redshifts had been measured of long gamma-ray bursts discovered by the Swift satellite. Further 45 redshifts have been measured of the long gamma- ray bursts discovered by other satellites.
Larsson S, Ryde, Felix, Klose S, Ryde, F, Mészáros P, Mészáros, P, Tusnády, G, Mészáros, A., S. Larsson, Ryde F, Tusnady, G., Bagoly, Z., Klose, S., Balázs, L G, Bagoly Z, Z. Bagoly, Mészáros, Péter, Larsson, Stefan,, Larsson, S, Mészáros, Attila, A. Mészáros, Bagoly, Zsolt, P. Mészáros, I. Horváth, Horvath, I., Balázs L G, Meszaros, P., G. Tusnády, L. G. Balázs, Horváth I, Tusnády, Gábor, Tusnády G, Ryde, Felix,, Mészáros A, S. Klose, Horváth, I, Balázs, Lajos György, Mészáros, A, Balazs, L. G., Larsson, S., Bagoly, Z, Klose, S, F. Ryde, Ryde, F., Horváth, István   +44 more
core   +1 more source

Redshift distribution of gamma-ray bursts and star formation rate [PDF]

, 2006
Aims. The redshift distribution of gamma-ray bursts collected in the BATSE Catalog is compared with the star formation rate.We aim to clarify the accordance between them. We also study the case of comoving number density of bursts monotonously increasing
Bagoly, Zsolt, I. Horváth, Mészáros, A., Horvath, I., Balázs L G, Balázs, L., Bagoly, Z., L. G. Balázs, Horváth I, Balázs, L G, Bagoly Z, Z. Bagoly, Mészáros A, Horváth, I, Balázs, Lajos György, Mészáros, A, Bagoly, Z, Horváth, István, A. Mészáros   +18 more
core   +1 more source