Results 21 to 30 of about 309 (157)

Fermi: Monitoring the Gamma-Ray Universe

Galaxies, 2018
Since 2008, the Large Area Telescope and the Gamma-ray Burst Monitor on the Fermi Gamma-ray Space Telescope have been monitoring the entire sky at energies from about 8 keV to more than 1 TeV.
David J. Thompson
doaj   +1 more source

Latest Results from the Fermi Gamma-Ray Telescope

Acta Polytechnica CTU Proceedings, 2014
Can we learn about New Physics with astronomical and astro-particle data? Since its launch in 2008, the Large Area Telescope, onboard of the Fermi Gamma-ray Space Telescope, has detected the largest amount of gamma rays in the 20 MeV - 300 GeV energy ...
Aldo Morselli
doaj   +1 more source

Identifying the Gamma-Ray Emission of the Nearby Galaxy M83

The Astrophysical Journal, 2023
We report on the detection of a γ -ray source at the position of the nearby star-forming galaxy (SFG) M83, which is found from our analysis of 14 yr of the data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope (Fermi ...
Yi Xing, Zhongxiang Wang
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Fast γ-ray Variability: A Common Feature and Powerful Probe for Jetted AGNs

Galaxies, 2018
Among the highly dynamical non-thermal universe, flashes of γ-ray photons from jets in active galactic nuclei (AGNs) are always attractive. Not only are they extraordinary observational phenomena, but they also become powerful probes of the jets ...
Neng-hui Liao
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High-energy gamma- and cosmic-ray observations with future space-based GAMMA-400 gamma-ray telescope [PDF]

EPJ Web of Conferences, 2019
The future space-based GAMMA-400 gamma-ray telescope will be installed on the Navigator platform of the Russian Astrophysical Observatory. A highly elliptical orbit will provide observations for 7-10 years of many regions of the celestial sphere ...
Topchiev N.P., Galper A.M., Arkhangelskaja I.V., Arkhangelskiy A.I., Bakaldin A.V., Chernysheva I.V., Dalkarov O.D., Egorov A.E., Gusakov Yu.V., Kheymits M.D., Leonov A.A., Naumov P.Yu., Pappe N.Yu., Runtso M.F., Stozhkov Yu.I., Suchkov S.I., Yurkin Yu.T., Zverev V.G.   +17 more
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Recent Results from the Fermi Gamma-ray Space Telescope [PDF]

Proceedings of 35th International Conference of High Energy Physics — PoS(ICHEP 2010), 2011
The Fermi Gamma-ray Space Telescope, formerly named GLAST, is a mission in low-Earth orbit to observe gamma rays from the cosmos in the broad energy range from 20 MeV to >300 GeV, with supporting observations of gamma-ray bursts from 8 keV to 30 MeV. The telescope far surpasses previous generations in its ability to detect and localize faint gamma-ray ...
openaire   +1 more source

High Energy Observational Investigations of Supernova Remnants and their Interactions with Surroundings [PDF]

Journal of Astronomy and Space Sciences, 2013
Here we review the effort of Fermi Asian Network (FAN) in exploring the supernova remnants (SNRs) with state-of-art high energy observatories, including Fermi Gamma-ray Space Telescope and Chandra X-ray Observatory, in the period of 2011- 2012 ...
Chung-Yue Hui
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Probing photon-ALP oscillations from the flat spectrum radio quasar 4C+21.35

Physics Letters B, 2022
Flat spectrum radio quasar (FSRQ) is the most luminous blazar at the GeV energies. In this paper, we probe the photon-axion-like particle (ALP) oscillation effect on the latest very-high-energy (VHE) γ-ray observations of the FSRQ 4C+21.35 (PKS 1222+216).
Hai-Jun Li
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MeV gamma-ray constraints for light dark matter from semi-annihilation

Physics Letters B, 2023
Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally.
Jun Guo, Lei Wu, Bin Zhu
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FERMI GAMMA-RAY SPACE TELESCOPEOBSERVATIONS OF GAMMA-RAY OUTBURSTS FROM 3C 454.3 IN 2009 DECEMBER AND 2010 APRIL [PDF]

The Astrophysical Journal, 2010
The flat spectrum radio quasar 3C 454.3 underwent an extraordinary outburst in 2009 December when it became the brightest gamma-ray source in the sky for over 1 week. Its daily flux measured with the Fermi-Large Area Telescope at photon energiesE > 100 MeV reached F-100 = 22 +/- 1 x 10(6) photon cm(-2) s(-1), representing the highest daily flux of any ...
Ackermann, M., Ajello, M., Baldini, L., Ballet, Jean, Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Berenji, B., Blandford, R. D., Bonamente, E., Borgland, A. W., Bregeon, J., Brigida, M., Bruel, Pascal, Buehler, R., Burnett, T. H., Buson, S., Caliandro, G. A., Cameron, R. A., Caraveo, P. A., Carrigan, S., Casandjian, J. M., Cavazzuti, E., Cecchi, C., Celik, O., Chekhtman, A., Cheung, C. C., Chiang, J., Ciprini, S., Claus, R., Cohen-Tanugi, J., Corbel, S., Cutini, S., d'Ammando, F., Dermer, C. D., de Angelis, A., de Palma, F., Digel, S. W., Do Couto e Silva, E., Drell, P. S., Dubois, R., Dumora, D., Escande, L., Favuzzi, C., J. Fegan, S., Ferrara, E. C., Fuhrmann, L., Fukazawa, Y., Fusco, P., Gargano, F., Gasparrini, D., Gehrels, N., Germani, S., Giebels, B., Giglietto, N., Giommi, P., Giordano, F., Giroletti, M., Glanzman, T., Godfrey, G., Grenier, I. A., Grove, J. E., Guiriec, S., Hadasch, D., Hayashida, M., Hays, E., Jóhannesson, G., Johnson, A. S., Johnson, W. N., Kamae, T., Katagiri, H., Kataoka, J., Knödlseder, Jürgen, Kuss, M., Lande, J., Larsson, S., Latronico, L., Lee, S.-H., Llena Garde, M., Longo, F., Loparco, F., Lott, B., Lubrano, P., Madejski, G. M., Makeev, A., Marchili, N., Mazziotta, M. N., Mcenery, J. E., Mehault, J., Michelson, P. F., Mizuno, T., Monte, C., Monzani, M. E., Morselli, A., Moskalenko, I. V., Murgia, S., Nakamori, T., Nalewajko, K., Naumann-Godo, M., Nolan, P. L., Norris, J. P., Nuss, E., Ohsugi, T., Okumura, A., Omodei, N., Orlando, E., Ormes, J. F., Pelassa, V., Pepe, M., Pesce-Rollins, M., Piron, F., Porter, T. A., Rainò, S., Rando, R., Razzano, M., Reimer, A., Reimer, O., Reyes, L. C., Ripken, J., Ritz, S., Roth, M., Sadrozinski, H. F.-W., Sanchez, D., Sander, A., Scargle, J. D., Sgrò, C., Sikora, M., Siskind, E. J., Spandre, G., Spinelli, P., Strickman, M. S., Suson, D. J., Takahashi, H., Takahashi, T., Tanaka, T., Tanaka, Y., Thayer, J. B., Thayer, J. G., Thompson, D. J., Tibaldo, L., Torres, D. F., Tosti, G., Tramacere, A., Usher, T. L., Vandenbroucke, J., Vilchez, N., Vitale, V., Waite, A. P., Wang, P., Wehrle, A. E., Winer, B. L., Yang, Z., Ylinen, T., Ziegler, M.   +154 more
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