Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Norris, Jay P."'
This presentation describes the Bayesian Block algorithm in the context of its application to analysis of time series data from the Fermi Gamma Ray Space Telescope. More generally this algorithm performs optimal segmentation analysis on sequential da
Externí odkaz:
http://arxiv.org/abs/1304.2818
This paper addresses the problem of detecting and characterizing local variability in time series and other forms of sequential data. The goal is to identify and characterize statistically significant variations, at the same time suppressing the inev
Externí odkaz:
http://arxiv.org/abs/1207.5578
Autor:
Zhang, Bin-Bin, Burrows, David, Zhang, Bing, Meszaros, Peter, Wang, Xiang-Yu, Stratta, Giulia, D'Elia, Valerio, Frederiks, Dmitry, Golenetskii, Sergey, Cummings, Jay R., Norris, Jay P., Falcone, Abraham, Barthelmy, Scott D., Gehrels, Neil
Publikováno v:
2012ApJ...748..132Z
The double burst, GRB 110709B, triggered Swift/BAT twice at 21:32:39 UT and 21:43:45 UT, respectively, on 9 July 2011. This is the first time we observed a GRB with two BAT triggers. In this paper, we present simultaneous Swift and Konus-WIND observa
Externí odkaz:
http://arxiv.org/abs/1111.2922
We analyze the Swift/BAT sample of short gamma-ray bursts, using an objective Bayesian Block procedure to extract temporal descriptors of the bursts' initial pulse complexes (IPCs). The sample comprises 12 and 41 bursts with and without extended emis
Externí odkaz:
http://arxiv.org/abs/1101.1648
Publikováno v:
Astrophys.J.717:411-419,2010
The initial pulse complex (IPC) in short gamma-ray bursts is sometimes accompanied by a softer, low-intensity extended emission (EE) component. In cases where such a component is not observed, it is not clear if it is present but below the detection
Externí odkaz:
http://arxiv.org/abs/0910.2456
Autor:
Stamatikos, Michael, Ukwatta, Tilan N., Sakamoto, Takanori, Dhuga, Kalvir S., Toma, Kenji, Pe'er, Asaf, Meszaros, Peter, Band, David L., Norris, Jay P., Barthelmy, Scott D., Gehrels, Neil
Publikováno v:
AIP Conf.Proc.1133:356-361,2009
We report on observations of correlated behavior between the prompt gamma-ray and optical emission from GRB 080319B, which confirm that (i) they occurred within the same astrophysical source region and (ii) their respective radiation mechanisms were
Externí odkaz:
http://arxiv.org/abs/0902.0263
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
Autor:
Liang, En-Wei, Zhang, Bin-Bin, Stamatikos, Mike, Zhang, Bing, Norris, Jay, Gehrels, Neil, Zhang, Jin, Dai, Z. G.
Publikováno v:
Astrophys.J.653:L81-L84,2006
The spectral and temporal properties of the non-thermal emission ofthe nearby XRF 060218 in 0.3-150 keV band are studied. We show that both the spectral energy distribution and the light curve properties suggest the same origin of the non-thermal emi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610956
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:
Roming, Peter W. A., Berk, Daniel Vanden, Palshin, Valentin, Pagani, Claudio, Norris, Jay, Kumar, Pawan, Krimm, Hans, Holland, Stephen T., Gronwall, Caryl, Blustin, A lex J., Zhang, Bing, Schady, Patricia, Sakamoto, Takanori, Osborne, Julian P., Nousek, John A., Marshall, Frank E., Meszaros, Peter, Golenetskii, Sergey V., Gehrels, Neil, Frederiks, Dmitry D., Campana, Sergio, Burrows, David N., Boyd, Patricia T., Barthelmy, Scott, Aptekar, R. L.
Publikováno v:
Astrophys.J.651:985-993,2006
We report the simultaneous observations of the prompt emission in the gamma-ray and hard X-ray bands by the Swift-BAT and the KONUS-Wind instruments of the short-hard burst, GRB 060313. The observations reveal multiple peaks in both the gamma-ray and
Externí odkaz:
http://arxiv.org/abs/astro-ph/0605005