Results 1 to 10 of about 5,354,517 (282)

On the Properties of Inverse Compton Spectra Generated by Upscattering a Power-law Distribution of Target Photons

open access: yesThe Astrophysical Journal, 2023
Relativistic electrons are an essential component in many astrophysical sources, and their radiation may dominate the high-energy bands. Inverse Compton (IC) emission is the radiation mechanism that plays the most important role in these bands. The basic
Dmitry Khangulyan   +2 more
doaj   +1 more source

GeV gamma-ray sources [PDF]

open access: yesAIP Conference Proceedings, 2000
<p>Published - <a href="/records/ba0f2-sbp54/files/LAMaipcp00.pdf?download=1">LAMaipcp00.pdf</a></p>
Lamb, R. C., Macomb, D. J.
openaire   +2 more sources

Limits on Leptonic TeV Emission from the Cygnus Cocoon with Swift-XRT

open access: yesThe Astrophysical Journal, 2023
γ -ray observations of the Cygnus Cocoon, an extended source surrounding the Cygnus X star-forming region, suggest the presence of a cosmic-ray accelerator reaching energies up to a few PeV.
David Guevel   +7 more
doaj   +1 more source

Point Sources of GeV Gamma Rays [PDF]

open access: yesThe Astrophysical Journal, 1997
A catalog of c-ray sources based on photons with energies greater than 1 GeV has been developed from observations taken by the EGRET instrument of the Compton Gamma Ray Observatory. The data are taken from the 4.5 yr of observation available in the public data archives. We emphasize sources that are detected using the entire database, without regard
Lamb, R. C., Macomb, D. J.
openaire   +2 more sources

Evidence for Two Distinct Populations of Kilonova-associated Gamma-Ray Bursts

open access: yesThe Astrophysical Journal Letters, 2023
Identification of gamma-ray burst (GRB) progenitors based on the duration of their prompt emission ( T _90 ) has faced several roadblocks recently. Long-duration GRBs (with T _90 > 2 s) have traditionally been thought to be originating from the collapse ...
Dimple, K. Misra, K. G. Arun
doaj   +1 more source

GRB 221009A: The BOAT

open access: yesThe Astrophysical Journal Letters, 2023
GRB 221009A has been referred to as the brightest of all time (BOAT). We investigate the veracity of this statement by comparing it with a half century of prompt gamma-ray burst observations.
Eric Burns   +29 more
doaj   +1 more source

Massive protostars as gamma-ray sources [PDF]

open access: yesAstronomy and Astrophysics, 2010
Massive protostars have associated bipolar outflows with velocities of hundreds of km s$^{-1}$. Such outflows can produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission. We aim at exploring under which conditions relativistic particles are accelerated at the terminal shocks of the protostellar jets ...
Bosch Ramon, V.   +3 more
openaire   +4 more sources

CATACLYSMIC VARIABLES AND GAMMA-RAY SOURCES [PDF]

open access: yesEAS Publications Series, 2013
The cataclysmic variables are associated with high energy events and probably many of them could be potential gamma-ray sources. Up to now Fermi-LAT detected 3 gamma-ray transients, which belong to CVs and related objects: V407 Cyg, N Sco 2012 and N Mon 2012 = V959 Mon. We present the first multicolour observations of the slow classical nova V959 Mon.
E. Pavlenko   +3 more
openaire   +1 more source

Variability of EGRET Gamma‐Ray Sources [PDF]

open access: yesThe Astrophysical Journal, 2003
Accepted by ApJ. 13 pages, 3 figures, 2 tables. Machine-readable copies of Table 1 are at http://giants.stanford.edu/~pln/vartbl1/
Nolan, P. L.   +3 more
openaire   +2 more sources

Pulsar counterparts of gamma-ray sources [PDF]

open access: yesAIP Conference Proceedings, 1997
The EGRET catalogue of unidentified X-ray sources has more objects along the galactic disk than at high galactic latitude, where identifications are comparatively easier. On the other hand, the Egret/GRO mission has already identified several known radio pulsars as gamma-ray sources as well as discovering Geminga's nature as a pulsar. If Geminga is not
Caraveo, P. A., Bignami, G. F.
openaire   +2 more sources

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