Results 131 to 140 of about 20,211 (230)

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

The Large Area Telescope on the Fermi Gamma-Ray Space Telescope Mission

The Large Area Telescope on the Fermi Gamma-Ray Space Telescope Mission
The Large Area Telescope (Fermi/LAT, hereafter LAT), the primary instrument on the Fermi Gamma-ray Space Telescope (Fermi) mission, is an imaging, wide field-of-view (FoV), high-energy γ-ray telescope, covering the energy range from below 20 MeV to more than 300 GeV.
openaire   +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

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

Prospects for Measuring the Cosmic-Ray Proton Spectrum Using the LAT Instrument on the Fermi Gamma-Ray Space Telescope [PDF]

, 2009
P. D. Smith, R. E. Hughes, B. L. Winer, T. W. Wood   +3 more
openalex   +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

Gamma-ray band and multi-waveband variability of blazars with the Fermi Large Area Space Telescope [PDF]

, 2011
S. Ciprini
openalex   +1 more source

A nearby long gamma-ray burst from a merger of compact objects. [PDF]

Nature, 2022
Troja E, Fryer CL, O'Connor B, Ryan G, Dichiara S, Kumar A, Ito N, Gupta R, Wollaeger RT, Norris JP, Kawai N, Butler NR, Aryan A, Misra K, Hosokawa R, Murata KL, Niwano M, Pandey SB, Kutyrev A, van Eerten HJ, Chase EA, Hu YD, Caballero-Garcia MD, Castro-Tirado AJ.   +23 more
europepmc   +1 more source

Probing a Cosmogenic Origin of Astrophysical Neutrinos and Cosmic Rays Using Gamma-Ray Observations of TXS 0506+056

The Astrophysical Journal
In 2017 September, a high-energy neutrino event detected by the IceCube Neutrino Observatory (IceCube-170922A) was associated, at the 3 σ level, with a gamma-ray flare from the blazar TXS 0506+056.
A. Acharyya, A. Archer, P. Bangale, J. T. Bartkoske, W. Benbow, J. H. Buckley, Y. Chen, J. L. Christiansen, A. Duerr, M. Errando, M. Escobar Godoy, A. Falcone, S. Feldman, Q. Feng, S. Filbert, L. Fortson, A. Furniss, W. Hanlon, O. Hervet, C. E. Hinrichs, J. Holder, Z. Hughes, M. Iskakova, W. Jin, P. Kaaret, M. Kertzman, M. Kherlakian, D. Kieda, T. K. Kleiner, N. Korzoun, M. J. Lang, M. Lundy, G. Maier, C. L. Mooney, R. Mukherjee, W. Ning, R. A. Ong, A. Pandey, M. Pohl, E. Pueschel, J. Quinn, P. L. Rabinowitz, K. Ragan, P. T. Reynolds, D. Ribeiro, E. Roache, I. Sadeh, A. C. Sadun, L. Saha, G. H. Sembroski, R. Shang, M. Splettstoesser, D. Tak, A. K. Talluri, J. V. Tucci, J. Valverde, D. A. Williams, S. L. Wong, T. Yoshikoshi, The VERITAS Collaboration, M. Meyer, J. Müller, The Fermi–LAT Collaboration   +62 more
doaj   +1 more source