Results 1 to 10 of about 5,004,311 (376)

Gamma-ray emission from the globular clusters Liller 1, M80, NGC 6139, NGC 6541, NGC 6624, and NGC 6752 [PDF]

, 2011
Globular clusters (GCs) are emerging as a new class of gamma-ray emitters, thanks to the data obtained from the Fermi Gamma-ray Space Telescope. By now, eight GCs are known to emit gamma-rays at energies >100~MeV.
Cheng, K. S., Hui, C. Y., Kong, A. K. H., Li, C., Lu, T. -N., Tam, P. H. T.   +5 more
core   +2 more sources

Gamma-ray polarimetry [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2003
An astrophysics application of a low noise Double-sided Silicon Strip Detector (DSSD) is described. A Semiconductor Multiple-Compton Telescope (SMCT) is being developed to explore the gamma-ray universe in the 0.1-20 MeV energy band. Excellent energy resolution and polarization sensitivity are key features of the SMCT.
openaire   +4 more sources

Probing intrinsic properties of short gamma-ray bursts with gravitational waves [PDF]

, 2017
Progenitors of short gamma-ray bursts are thought to be neutron stars coalescing with their companion black hole or neutron star, which are one of the main gravitational wave sources. We have devised a Bayesian framework for combining gamma-ray burst and
Fan, Xilong, Heng, Ik Siong, Messenger, Christopher   +2 more
core   +2 more sources

EXTRAGALACTIC GAMMA-RAYS: GAMMA RAY BURSTS AND BLAZARS [PDF]

International Journal of Modern Physics A, 2005
The extragalactic gamma-ray sky is dominated by two classes of sources: Gamma-Ray Bursts (GRBs) and radio loud active galactic nuclei whose jets are pointing at us (blazars). We believe that the radiation we receive from them originates from the transformation of bulk relativistic energy into random energy.
openaire   +3 more sources

Outliers in Spectral Time Lag-Selected Gamma Ray Bursts

Universe, 2022
It is possible that astrophysical samples are polluted by some outliers, which might belong to a different sub-class. By removing the outliers, the underlying statistical features may be revealed.
Fei-Fei Wang, Yuan-Chuan Zou
doaj   +1 more source

The connection between the radio jet and the gamma-ray emission in the radio galaxy 3C 120 [PDF]

, 2015
We present the analysis of the radio jet evolution of the radio galaxy 3C 120 during a period of prolonged gamma-ray activity detected by the Fermi satellite between December 2012 and October 2014.
Casadio, C., G,, Gómez, J., i, P., Jorstad, S., Kovalev, Y., Lister, M., Marscher, A., Pushkarev, A., Savolainen, T.   +9 more
core   +2 more sources

Gamma-Rays from Kilonovae and the Cosmic Gamma-Ray Background [PDF]

The Astrophysical Journal, 2020
Abstract The recent detection of the gravitational-wave event GW170817, produced by the coalescence of two neutron stars, and of its optical–infrared counterpart, powered by the radioactive decay of r-process elements, has opened a new window onto gamma-ray astronomy: the direct detection of photons coming from such decays.
Pilar Ruiz-Lapuente, Oleg Korobkin, Oleg Korobkin   +2 more
openaire   +5 more sources

The GAMMA-400 gamma-ray telescope for precision gamma-ray emission investigations

Journal of Physics: Conference Series, 2016
The GAMMA-400 gamma-ray telescope with excellent angular and energy resolutions is designed to search for signatures of dark matter in the fluxes of gamma-ray emission and electrons + positrons. Precision investigations of gamma-ray emission from Galactic Center, Crab, Vela, Cygnus, Geminga, and other regions will be performed, as well as diffuse gamma-
R. Aptekar, V. A. Loginov, M. D. Kheymits, J. E. Ward, Mirko Boezio, E. Mocchiutti, A. Vacchi, Yu. I. Stozhkov, P. Cumani, E Berti, E. M. Tyurin, V. A. Dogiel, Felix Ryde, S. B. Ricciarini, Alexey Leonov, Alexey Leonov, Miriam Lucio Martinez, Nikolay Topchiev, A. A. Taraskin, M. Bongi, A. M. Galper, A. M. Galper, Marco Tavani, C. De Donato, N. Zampa, Bohdan Hnatyk, Francesco Longo, J. M. Paredes, G. I. Vasilyev, A.I. Arkhangelskiy, G Bigongiari, Nicola Mori, Piero Spillantini, Igor V. Moskalenko, A. V. Bakaldin, V. G. Zverev, O.D. Dalkarov, L. Bergstrom, P. Picozza, O. Adriani, N Finetti, Mark Pearce, Vladimir Kaplin, Maxim S. Gorbunov, Paolo Maestro, S. I. Suchkov, I. V. Arkhangelskaja, Valery Korepanov, V. Bonvicini, E. Vannuccini, A. Rappoldi, Josefin Larsson, P.W. Cattaneo, P. Yu. Naumov, G. Castellini, O. V. Serdin, M. Ulanov, P S Marrocchesi, V. N. Zirakashvili, A Tiberio, G. L. Dedenko, S. G. Bobkov, David Gascon, Lorenzo Bonechi, A. A. Kaplun, V. V. Kadilin, E. A. Bogomolov, A. L. Menshenin, V. V. Mikhailov, Roberta Sparvoli, Y. u. V. Gusakov, S. Bottai, A. A. Moiseev, M. F. Runtso, Yu. T. Yurkin, P. Papini   +75 more
openaire   +5 more sources

Gamma ray effects on flash memory cell arrays [PDF]

Nuclear Technology and Radiation Protection, 2012
Information stored in flash memories is physically represented by the absence or presence of charge on electrically isolated floating gates. Interaction of gamma rays with the insulators surrounding the floating gate produces effects that degrade the ...
Dolićanin Edin Ć.
doaj   +1 more source

Gamma-ray binaries [PDF]

Astrophysics and Space Science, 2007
Recent observations have shown that some compact stellar binaries radiate the highest energy light in the universe. The challenge has been to determine the nature of the compact object and whether the very high energy gamma-rays are ultimately powered by pulsar winds or relativistic jets.
openaire   +3 more sources