Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Panjab UniversityIN1.9k papers
- University of Illinois ChicagoUS1.9k papers
- Purdue University West LafayetteUS1.9k papers
- Centre National de la Recherche ScientifiqueFR1.8k papers
- Florida State UniversityUS1.8k papers
- Fermi National Accelerator LaboratoryUS1.8k papers
- University of RochesterUS1.7k papers
- University of California, RiversideUS1.7k papers
- University of VirginiaUS1.7k papers
- Brown UniversityUS1.7k papers
- Texas A&M UniversityUS1.7k papers
- University of KansasUS1.7k papers
13 papers · 2 filters
Line emission from gamma-ray burst environments
M. Boettcher
The time and angle dependent line and continuum emission from a dense torus around a cosmological gamma-ray burst source is simulated, taking into account photoionization, collisio…
Simultaneous Observations of GRS 1758-258 in 1997 by VLA, IRAM, SEST, RXTE and OSSE: Spectroscopy and Timing
D. Lin, I. A. Smith, E. P. Liang +6
We report the results of our multi-wavelength observations of GRS 1758-258 made in August 1997. The energy bands include radio, millimeter, X-ray, and gamma-ray. The observations e…
The Energy Dependence of the Aperiodic Variability for Cygnus X-1, GX 339-4, GRS 1758-258, & 1E 1740.7-2942
D. Lin, I. A. Smith, M. Bottcher +1
Using the data from the Rossi X-ray Timing Explorer (RXTE), we report the different energy dependence of the variability of the four persistent hard X-ray sources in the low-hard s…
Spectral Energy Distributions of Gamma Ray Bursts Energized by External Shocks
C. D. Dermer, M. Boettcher, J. Chiang
Sari, Piran, and Narayan have derived analytic formulas to model the spectra from gamma-ray burst blast waves that are energized by sweeping up material from the surrounding medium…
ASCA Observation of the quiescent X-ray counterpart to SGR1627-41
K. Hurley, T. Strohmayer, P. Li +9
We present a 2 - 10 keV ASCA observation of the field around the soft gamma repeater SGR1627-41. A quiescent X-ray source was detected in this observation whose position was consis…
Leptonic Jet Models of Blazars: Broadband Spectra and Spectral Variability
M. Boettcher
The current status of leptonic jet models for gamma-ray blazars is reviewed. Differences between the quasar and BL-Lac subclasses of blazars may be understood in terms of the domin…
A Keck High Resolution Spectroscopic Study of the Orion Nebula Proplyds
W. J. Henney, C. R. O'Dell
We present the results of spectroscopy of four bright proplyds in the Orion Nebula obtained at a velocity resolution of 6 km/s. After careful isolation of the proplyd spectra from…
Early GRB Afterglows from Relativistic Blast Waves in General Radiative Regimes
M. Boettcher, C. D. Dermer
We present simple analytical expressions for the predicted spectral and temporal behavior of the early afterglow radiation from gamma-ray bursts in radiative regimes intermediate b…
GRB990123: The Case for Saturated Comptonization
E. P. Liang, A. Crider, M. Boettcher +1
The recent simultaneous detection of optical, X-ray and gamma-ray photons from GRB990123 during the burst provides the first broadband multi-wavelength characterization of the burs…
The External Shock Model of Gamma-Ray Bursts: Three Predictions and a Paradox Resolved
Charles D. Dermer, Markus Boettcher, J. Chiang
In the external shock model, gamma-ray burst (GRB) emissions are produced by the energization and deceleration of a thin relativistic blast wave due to its interactions with the ci…
The synchrotron peak shift during high-energy flares of blazars
M. Boettcher
A prediction for the energy shift of the synchrotron spectrum of flat-spectrum radio quasars (FSRQs) during high-energy flares is presented. If the -ray emission of FSRQs is pro…
Morphology and Composition of the Helix Nebula
R. B. C. Henry, K. B. Kwitter, R. J Dufour
We present new narrow-band filter imagery in H-alpha and [N II] 6584 along with UV and optical spectrophotometry measurements from 1200 to 9600 Angstroms of NGC 7293, the Helix Neb…
Broadband Spectral Analysis of PKS 0528+134: A Report on Six Years of EGRET Observations
R. Mukherjee, M. Boettcher, R. C. Hartman +6
The multiwavelength spectra of PKS 0528+134 during six years of observations by EGRET have been analyzed using synchrotron self-Compton (SSC) and external radiation Compton (ERC) m…