Results 21 to 30 of about 207,538 (259)

Evolution of Data Formats in Very-High-Energy Gamma-ray Astronomy [PDF]

Universe, 2021
Most major scientific results produced by ground-based gamma-ray telescopes in the last 30 years have been obtained by expert members of the collaborations operating these instruments.
C. Nigro, T. Hassan, L. Olivera-Nieto
semanticscholar   +1 more source

On the Search for the Galactic PeVatrons by Means of Gamma-Ray Astronomy

Universe, 2022
Cosmic rays are ultra-relativistic particles that slam into the atmosphere from all directions in the sky. Gamma rays emitted when cosmic rays interact with Galactic gas and radiation fields are a powerful tool to investigate their origin. Many candidate
S. Casanova
semanticscholar   +1 more source

An investigation on the factors affecting machine learning classifications in gamma-ray astronomy [PDF]

Monthly notices of the Royal Astronomical Society, 2020
We have investigated a number of factors that can have significant impacts on the classification performance of gamma-ray sources detected by Fermi Large Area Telescope (LAT) with machine learning techniques. We show that a framework of automatic feature
Shengda Luo, A. Leung, C. Hui, K. L. Li
semanticscholar   +1 more source

20 Years of Indian Gamma Ray Astronomy Using Imaging Cherenkov Telescopes and Road Ahead

Universe, 2021
The field of ground-based γ-ray astronomy has made very significant advances over the last three decades with the extremely successful operations of several atmospheric Cherenkov telescopes worldwide.
K. Singh, K. Yadav
semanticscholar   +1 more source

The Crab Pulsar and Nebula as Seen in Gamma-Rays

Universe, 2021
Slightly more than 30 years ago, Whipple detection of the Crab Nebula was the start of Very High Energy gamma-ray astronomy. Since then, gamma-ray observations of this source have continued to provide new surprises and challenges to theories, with the ...
Elena Amato, Barbara Olmi
doaj   +1 more source

Tunka Advanced Instrument for cosmic rays and Gamma Astronomy (TAIGA): Status, results and perspectives

EPJ Web of Conferences, 2017
We present the current status of high-energy cosmic-ray physics and gamma-ray astronomy at the Tunka Astrophysical Center (AC). This complex is located in the Tunka Valley, about 50 km from Lake Baikal.
Kuzmichev L., Astapov I., Bezyazeekov P., Boreyko V., Borodin A., Brückner M., Budnev N., Chiavassa A., Gress O., Gress T., Grishin O., Dyachok A., Epimakhov S., Fedorov O., Gafarov A., Grebenyuk V., Grinyuk A., Haungs A., Horns D., Huege T., Ivanova A., Jurov D., Kalmykov N., Kazarina Y., Kindin V., Kiryuhin V., Kokoulin R., Kompaniets K., Korosteleva E., Kostunin D., Kozhin V., Kravchenko E., Kunnas M., Lenok V., Lubsandorzhiev B., Lubsandorzhiev N., Mirgazov R., Mirzoyan R., Monkhoev R., Nachtigal R., Osipova E., Pakharukov A., Panasyuk M., Pankov L., Petrukhin A., Poleschuk V., Popesku M., Popova E., Porelli A., Postnikov E., Prosin V., Ptuskin V., Pushnin A., Rubtsov G., Ryabov E., Sagan Y., Samoliga V., Schröder F.G., Semeney Yu., Silaev A., Silaev A., Sidorenko A., Skurikhin A., Slunecka V., Sokolov A., Spiering C., Sveshnikova L., Sulakov V., Tabolenko V., Tarashansky B., Tkachenko A., Tkachev L., Tluczykont M., Wischnewski R., Zagorodnikov A., Zurbanov V., Yashin I.   +76 more
doaj   +2 more sources

Galactic Diffuse γ-Ray Emission from GeV to PeV Energies in Light of Up-to-date Cosmic-Ray Measurements

The Astrophysical Journal, 2023
Diffuse γ -ray emission between 10 and 1000 TeV from the Galactic plane was recently measured by the Large High Altitude Air Shower Observatory (LHAASO).
Rui Zhang, Xiaoyuan Huang, Zhi-Hui Xu, Shiping Zhao, Qiang Yuan   +4 more
doaj   +1 more source

Predicting community college astronomy performance through logistic regression [PDF]

Physical Review Physics Education Research.19(2023), 2023
The present study examined demographic and academic predictors of astronomy performance of community college students enrolled in astronomy courses in a large suburban community college. The theoretical framework was based upon a deconstructive approach for predicting community college performance whereby students academic pathways through higher ...
arxiv   +1 more source

A General Overview for Localizing Short Gamma-Ray Bursts with a CubeSat Mega-Constellation

Frontiers in Astronomy and Space Sciences, 2020
The gamma-ray burst monitor (GBM) on the Fermi Gamma-Ray Space Telescope, for the first time, detected a short gamma ray burst (SGRB) signal that accompanies a gravitational wave signal GW170817 in 2017.
Fadil Inceoglu, Fadil Inceoglu, Fadil Inceoglu, Néstor J. Hernández Marcano, Rune H. Jacobsen, Christoffer Karoff   +5 more
doaj   +1 more source

Radio and γ-ray Evidence for the Supernova Origin of High-velocity Cloud Complex M

The Astrophysical Journal, 2023
Using λ 21 cm galactic neutral hydrogen data from the HI4PI survey and 0.75–30 MeV γ -ray emission from the Imaging Compton Telescope, we have searched for the origin event that accelerated high-velocity cloud Complex M.
J. T. Schmelz, G. L. Verschuur
doaj   +1 more source