Results 111 to 120 of about 26,003 (179)

Fermi Unassociated Sources in the MeerKAT Absorption Line Survey

The Astrophysical Journal
Over 2000 γ -ray sources identified by the Large Area Telescope on NASA's Fermi Gamma-ray Space Telescope are considered unassociated, meaning that they have no known counterparts in any other frequency regime.
Morgan Himes, Preshanth Jagannathan, Dale A. Frail, Frank Schinzel, Neeraj Gupta, S. A. Balashev, F. Combes, P. P. Deka, H.-R. Klöckner, E. Momjian, J. D. Wagenveld   +10 more
doaj   +1 more source

Sixteen Years of Gamma-Ray Discoveries and AGN Observations with Fermi-LAT

Particles
In June 2024, the Fermi Gamma-Ray Space Telescope (FGST) celebrated its 16th year of operations. The Fermi Large Area Telescope (Fermi-LAT) is the main instrument onboard the FGST satellite and is designed to be sensitive to γ-rays in the energy range ...
Fausto Casaburo, Stefano Ciprini, Dario Gasparrini, Federica Giacchino   +3 more
doaj   +1 more source

Very high-energy gamma-ray emission beyond 10 TeV from GRB 221009A. [PDF]

Sci Adv, 2023
LHAASO Collaboration.
europepmc   +1 more source

Discerning Misclassified Flat-spectrum Radio Quasars from Low-frequency-peaked BL Lacertae Objects

The Astrophysical Journal Supplement Series
A sample of 312 low-frequency-peaked BL Lacertae objects (LBLs) and 694 flat-spectrum radio quasars (FSRQs) with the parameters of both redshift and gamma-ray photon spectral index (Γ _γ ) is compiled from the Fourth Catalog of Active Galactic Nuclei ...
S. Liang, W. G. Yang, Y. G. Zheng, S. J. Kang   +3 more
doaj   +1 more source

Energy-dependent intrinsic time delay of gamma-ray bursts on testing Lorentz invariance violation

Physics Letters B
High-energy photons of gamma-ray bursts (GRBs) might be emitted at different intrinsic times with energy dependence at the source. In this letter, we expand the model from previous works on testing the Lorentz Invariance Violation (LV) with the observed ...
Hanlin Song, Bo-Qiang Ma
doaj   +1 more source

Time-averaging Polarimetric and Spectral Properties of Gamma-Ray Bursts

The Astrophysical Journal Supplement Series
The composition and radiation mechanism of gamma-ray bursts (GRBs) within jets continue to be hotly debated. Investigating the joint polarimetric and spectral properties is crucial for understanding the composition and radiation mechanism of GRBs ...
Liang Li, Soroush Shakeri
doaj   +1 more source

Fermi Gamma-ray Space Telescope

, 2010
A. Harding, N. Omodei
semanticscholar   +1 more source

A structured jet explains the extreme GRB 221009A. [PDF]

Sci Adv, 2023
O'Connor B, Troja E, Ryan G, Beniamini P, van Eerten H, Granot J, Dichiara S, Ricci R, Lipunov V, Gillanders JH, Gill R, Moss M, Anand S, Andreoni I, Becerra RL, Buckley DAH, Butler NR, Cenko SB, Chasovnikov A, Durbak J, Francile C, Hammerstein E, van der Horst AJ, Kasliwal MM, Kouveliotou C, Kutyrev AS, Lee WH, Srinivasaragavan GP, Topolev V, Watson AM, Yang Y, Zhirkov K.   +31 more
europepmc   +1 more source

A commentary of "Consistency radio bursts in the Milky Way": 10 remarkable discoveries from 2020 in Nature. [PDF]

Fundam Res, 2022
Li D.
europepmc   +1 more source

Neutrino and EM asterometric detection of habitable exoplanets. [PDF]

Bioinformation, 2023
Shapshak P.
europepmc   +1 more source