M. S. Briggs
A5001858889- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Astronomy and Astrophysical Research
- Pulsars and Gravitational Waves Research
- SAS software applications and methods
- Astrophysics and Cosmic Phenomena
- Astro and Planetary Science
- Astrophysical Phenomena and Observations
- Lightning and Electromagnetic Phenomena
- Particle Detector Development and Performance
- Ionosphere and magnetosphere dynamics
- Nuclear Physics and Applications
- Earthquake Detection and Analysis
- Statistical and numerical algorithms
- Solar and Space Plasma Dynamics
- Advanced X-ray and CT Imaging
- Geophysics and Gravity Measurements
- Stellar, planetary, and galactic studies
- Metabolism and Genetic Disorders
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Planetary Science and Exploration
- Advanced Optical Sensing Technologies
- Geomagnetism and Paleomagnetism Studies
- High-pressure geophysics and materials
University of Alabama in Huntsville
2015-2024
Universities Space Research Association
1996-2021
Catholic University of America
2021
University of Maryland, Baltimore County
2021
George Washington University
2021
Imperial College London
2021
University of Liverpool
2021
University of Delaware
2021
University of Wisconsin–Madison
2021
Clemson University
2021
view Abstract Citations (1971) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS BATSE Observations of Gamma-Ray Burst Spectra. I. Spectral Diversity Band, D. ; Matteson, J. Ford, L. Schaefer, B. Palmer, Teegarden, Cline, T. Briggs, M. Paciesas, W. Pendleton, G. Fishman, Kouveliotou, C. Meegan, Wilson, R. Lestrade, P. We studied the time-averaged gamma-ray burst spectra accumulated by spectroscopy detectors and Transient Source Experiment...
view Abstract Citations (1679) References (8) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Identification of Two Classes Gamma-Ray Bursts Kouveliotou, Chryssa ; Meegan, Charles A. Fishman, Gerald J. Bhat, Narayana P. Briggs, Michael S. Koshut, Thomas M. Paciesas, William Pendleton, Geoffrey N. We have studied the duration distribution gamma-ray bursts first BATSE catalog. find a bimodality in distribution, which separates GRBs into two classes: short...
Ground-based gamma-ray astronomy has had a major breakthrough with the impressive results obtained using systems of imaging atmospheric Cherenkov telescopes. huge potential in astrophysics, particle physics and cosmology. CTA is an international initiative to build next generation instrument, factor 5-10 improvement sensitivity 100 GeV 10 TeV range extension energies well below above TeV. will consist two arrays (one north, one south) for full sky coverage be operated as open observatory....
On August 17, 2017 at 12:41:06 UTC the Fermi Gamma-ray Burst Monitor (GBM) detected and triggered on short gamma-ray burst GRB 170817A. Approximately 1.7 s prior to this GRB, Laser Interferometer Gravitational-Wave Observatory (LIGO) a binary compact merger candidate associated with GRB. This is first unambiguous coincident observation of gravitational waves electromagnetic radiation from single astrophysical source marks start gravitational-wave multi-messenger astronomy. We report GBM...
The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from Fermi Observatory in study of gamma-ray bursts (GRBs). primary objective GBM is to extend energy range over which are observed downward Large Area Telescope (LAT) on into hard X-ray where extensive previous data sets exist. A secondary compute burst locations onboard allow re-orienting spacecraft so that LAT can observe delayed emission bright bursts. uses an array 12 sodium iodide scintillators and two...
The Burst and Transient Source Experiment (BATSE) on the Compton Gamma Ray Observatory (CGRO) has triggered 1637 cosmic gamma-ray bursts between 1991 April 19 1996 August 29. These events constitute Fourth BATSE burst catalog. current version (4Br) been revised from first circulated CD-ROM in September 1997 (4B) to include improved locations for a subset of that have reprocssed using additional data. A significant difference previous catalogs is inclusion periods when trigger energy range...
We report on the observation of bright, long gamma-ray burst, GRB 090902B, by Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments on-board Fermi observatory. This was one brightest GRBs to have been observed LAT, which detected several hundred photons during prompt phase. With a redshift z = 1.822, this burst is among most luminous Fermi. Time-resolved spectral analysis reveals significant power-law component in LAT data that distinct from usual Band model emission seen...
We present a systematic spectral analysis of 350 bright GRBs observed with BATSE, high and temporal resolution. Our sample was selected from the complete set 2704 BATSE GRBs, included 17 short GRBs. To obtain well-constrained parameters, four different photon models were fitted parameters that best represent each spectrum statistically determined. A thorough performed on time-integrated 8459 time-resolved burst spectra. Using results, we compared also studied correlations among their...
With an instantaneous view of 70% the sky, Fermi Gamma-ray Burst Monitor (GBM) is excellent partner in search for electromagnetic counterparts to gravitational wave (GW) events. GBM observations at time Laser Interferometer Gravitational-wave Observatory (LIGO) event GW150914 reveal presence a weak transient above 50 keV, 0.4~s after GW event, with false alarm probability 0.0022 (2.9$\sigma$). This lasting 1 s was not detected by any other instrument and does appear connected previously...
We present detailed observations of the bright short-hard gamma-ray burst GRB 090510 made with Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) on board Fermi observatory. is first detected by LAT that shows strong evidence for a deviation from Band spectral fitting function during prompt emission phase. The time-integrated spectrum fit sum $\Epeak = 3.9\pm 0.3$\,MeV, which highest yet measured, hard power-law component photon index $-1.62\pm 0.03$ dominates below...
The Gamma‐ray Burst Monitor (GBM) on the Fermi Space Telescope detected 12 intense terrestrial gamma ray flashes (TGFs) during its first year of observation. Typical maximum energies for most TGFs are ∼30 MeV, with one TGF having a 38 MeV photon; two softer and longer than others. After correcting instrumental effects, representative bright is found to have fluence ∼0.7 photons cm −2 . Pulses either symmetrical or faster risetimes fall times; they well fit Gaussian lognormal functions....
We present the fourth in a series of catalogs gamma-ray bursts (GRBs) observed with Fermi's Gamma-Ray Burst Monitor (Fermi-GBM). It extends six year catalog by four more years, now covering ten time period from trigger enabling on 2008 July 12 to 2018 11. During this GBM triggered almost twice day transient events which we identifyied 2356 as cosmic GRBs. Additional were due solar are events, magnetar burst activities, and terrestrial flashes. The intention GRB is provide updated information...
Observations of GRB 100724B with the Fermi Gamma-Ray Burst Monitor find that spectrum is dominated by typical Band functional form, which usually taken to represent a non-thermal emission component, but also includes statistically highly significant thermal spectral contribution. The simultaneous observation and components allows us confidently identify two components. fact these seem vary independently favors idea component photospheric origin while dominant occurs at larger radii. Our...
Since its launch in 2008, the Fermi Gamma-ray Burst Monitor (GBM) has triggered and located on average approximately two gamma-ray bursts (GRB) every three days. Here we present third of a series catalogs GRBs detected by GBM, extending second catalog more years, through middle July 2014. The resulting list includes 1405 triggers identified as GRBs. intention GBM GRB is to provide information community most important observables For each location main characteristics prompt emission,...
In this catalog we present the updated set of spectral analyses GRBs detected by Fermi Gamma-Ray Burst Monitor (GBM) during its first four years operation. It contains two types spectra, time-integrated fits and at brightest time bin, from 943 triggered GRBs. Four different models were fitted to data, resulting in a compendium more than 7500 spectra. The analysis was performed similarly, but not identically Goldstein et al. 2012. All 487 have been re-fitted using same methodology as that 456...
This is the second of a series catalogs gamma-ray bursts (GRBs) observed with Fermi Gamma-ray Burst Monitor (GBM). It extends first two-year catalog by two more years, resulting in an overall list 953 GBM triggered GRBs. The intention GRB to provide information community on most important observables detected For each location and main characteristics prompt emission, duration, peak flux fluence are derived. latter quantities calculated for 50 - 300 keV energy band, where maximum release...
Abstract GRB 221009A has been referred to as the brightest of all time (BOAT). We investigate veracity this statement by comparing it with a half century prompt gamma-ray burst observations. This is ever detected measures peak flux and fluence. Unexpectedly, highest isotropic-equivalent total energy identified, while luminosity at ∼99th percentile known distribution. explore how such can be powered discuss potential implications for ultralong high-redshift bursts. By geometric extrapolation...
Abstract We report the discovery of GRB 221009A, highest flux gamma-ray burst (GRB) ever observed by Fermi Gamma-ray Burst Monitor (Fermi-GBM). This has continuous prompt emission lasting more than 600 s, which smoothly transitions to afterglow visible in Fermi-GBM energy range (8 keV–40 MeV), and total energetics higher any other sample. By using a variety new existing analysis techniques we probe spectral temporal evolution 221009A. find no prior trigger time ( t 0 ; 2022 October 9 at...
The synchrotron shock model (SSM) for gamma-ray burst emission makes a testable prediction: that the observed low-energy power-law photon number spectral index cannot exceed -2/3 (where is defined with positive index: dN/dE∝Eα). We have collected time-resolved fit parameters over 100 bright bursts by Burst And Transient Source Experiment on board Compton Gamma Ray Observatory. Using this database, we find 23 in which limit of SSM violated. discuss elements analysis methodology affect...
view Abstract Citations (316) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The First BATSE Gamma-Ray Burst Catalog Fishman, Gerald J. ; Meegan, Charles A. Wilson, Robert B. Brock, Martin N. Horack, John M. Kouveliotou, Chryssa Howard, Sethanne Paciesas, William S. Briggs, Michael Pendleton, Geoffrey Koshut, Thomas Mallozzi, Stollberg, Mark Lestrade, Patrick and Transient Source Experiment on the Compton Observatory detected 260 cosmic...
The Fermi Gamma-ray Space Telescope observed the bright and long GRB090902B, lying at a redshift of z = 1.822. Together Large Area (LAT) Burst Monitor (GBM) cover spectral range from 8 keV to >300 GeV. Here we show that prompt burst spectrum is consistent with emission jet photosphere combined nonthermal described by single power law photon index −1.9. gives rise strong quasi-blackbody which somewhat broader than Planck function has characteristic temperature ∼290 keV. We model photospheric...
view Abstract Citations (248) References (41) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS BATSE Observations of Gamma-Ray Burst Spectra. II. Peak Energy Evolution in Bright, Long Bursts Ford, L. A. ; Band, D. Matteson, J. Briggs, M. S. Pendleton, G. N. Preece, R. Paciesas, W. Teegarden, B. Palmer, Schaefer, E. Cline, T. Fishman, Kouveliotou, C. Meegan, Wilson, Lestrade, P. We investigate spectral evolution 37 bright, long gamma-ray bursts observed with...
We report on the observation of bright, long gamma-ray burst, GRB 090926A, by Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) instruments board \Fermi\ Space Telescope. 090926A shares several features with other bright LAT bursts. In particular, it clearly shows a short spike in light curve that is present all detectors see this turn suggests there common region emission across entire energy range. addition, while separate high-energy power-law component has already been...