Results 61 to 70 of about 35,306 (169)

Gamma-ray burst models

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007
I consider various possibilities for making gamma-ray bursts, particularly from close binaries. In addition to the much-studied neutron star+neutron star and black hole+neutron star cases usually considered good candidates for short-duration bursts, there are also other possibilities.
openaire   +3 more sources

Investigation of the structure in 235U(nth,fis) prompt gamma energy spectrum by FIFRELIN [PDF]

EPJ Web of Conferences
The energy spectrum of prompt gamma-rays from 235U thermal fission is reproduced by a fission reaction model FIFRELIN to identify the origin of spectral features.
Ogawa Tatsuhiko, Litaize Olivier, Mancusi Davide, Chebboubi Abdelhazize, Serot Olivier   +4 more
doaj   +1 more source

New generation Cherenkov telescope array: HADAR and its performance introduction

Nuclear Physics B
Astrophysical very high energy (VHE) gamma-rays are believed to result almost exclusively from the interactions of populations of highly relativistic particles with ambient matter or photon fields.
Qingyuan Hou, Qingqian Zhou, Tianlu Chen, Youliang Feng, Hengjiao Liu, Yiqing Guo, Cheng Liu, Zihao Zhang, Xinlong Li, Qi Gao, Maoyuan Liu, Xiangli Qian, Yuanqi Liu, Jiadan Xie, Shanjie Shu, Weiqi Han, Qijiao Fang, Yanan Wang, Shaohua Zhang   +18 more
doaj   +1 more source

Multiple Mixing Ratios of Gamma Rays

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
The -mixing of  - transition in Er 168 populated in  Er(n,n ) Er 168 168  reaction is calculated in the present work by using a2- ratio method.
T. A. Younis
doaj  

Small-scale Magnetic Fields Are Critical to Shaping Solar Gamma-Ray Emission

The Astrophysical Journal
The Sun is a bright gamma-ray source due to hadronic cosmic-ray interactions with solar gas. While it is known that incoming cosmic rays must generally first be reflected by solar magnetic fields to produce outgoing gamma rays, theoretical models have ...
Jung-Tsung Li, John F. Beacom, Spencer Griffith, Annika H. G. Peter   +3 more
doaj   +1 more source

Gamma-ray bursts

22 pages, 6 figures.
openaire   +3 more sources

Search for long-term variability of HESS J1745-290

Astronomy & Astrophysics
At the center of our Galaxy lies the bright γ-ray point-like source HESS J1745-290, which is compatible in position with Sgr A⋆, although an association between the two remains uncertain.
Acharyya A., Aharonian F., Backes M., Batzofin R., Berge D., Bernlöhr K., Böttcher M., Boisson C., Bolmont J., Brun F., Bruno B., Burger-Scheidlin C., Bylund T., Celic J., Cerruti M., Chen A., Chernyakova M., Chibueze J. O., Chibueze O., Cornejo B., Cotter G., Mbarubucyeye J. Damascene, de Assis Scarpin J., de Bony de Lavergne M., de Naurois M., de Oña Wilhelmi E., Giler A. G. Delgado, Devin J., Djannati-Ataï A., Dmytriiev A., Egg K., Ernenwein J.-P., Nieves C. Escañuela, Fauverge P., Feijen K., Filipovic M. D., Fontaine G., Funk S., Gabici S., Glicenstein J. F., Glombitza J., Goswami P., Heckmann L., Hess B., Hinton J. A., Hofmann W., Holch T. L., Holler M., Horns D., Jamrozy M., Jankowsky F., Jaroschewski I., Jung-Richardt I., Kerszberg D., Khélifi B., Komin N., Kosack K., Kostunin D., Lang R. G., Lazarević S., Lemière A., Lemoine-Goumard M., Lenain J.-P., Liniewicz P., Mackey J., Malyshev D., Marandon V., Mayer M. G. F., Mehta A., Mitchell A. M. W., Moderski R., Mohrmann L., Montanari A., Niemiec J., Olivera-Nieto L., Moghadam M. O., Panny S., Parsons R. D., Pensec U., Pichard P., Preis T., Pühlhofer G., Punch M., Quirrenbach A., Reimer A., Reimer O., Reis I., Ren H. X., Reville B., Rieger F., Rowell G., Rudak B., Sabri K., Sahakian V., Santangelo A., Sasaki M., Schüssler F., Said W. Si, Sol H., Stawarz Ł., Tanaka T., Taylor G. L., Terrier R., Tsirou M., Unbehaun T., van Eldik C., Vecchi M., Venter C., Vink J., Voitsekhovskyi V., Wach T., Wagner S. J., Wierzcholska A., Zacharias M., Zech A., Zhong W., Zouari S.   +116 more
doaj   +1 more source

Multimessenger Emission by Magnetically Arrested Disks and Relativistic Jets of Black Hole X-Ray Binaries

The Astrophysical Journal
Black hole X-ray binaries (BHXBs) are observed in various wavelengths from radio to GeV gamma rays. Several BHXBs, including MAXI J1820+070 and Cygnus X-1, are also found to emit ultrahigh-energy (UHE; photon energy > 100 TeV) gamma rays.
Riku Kuze, Shigeo S. Kimura, Ke Fang
doaj   +1 more source

Proof-of-principle Study of Photon-nuclear Transmutation Based on 7Li (p,γ)8Be Reaction

Yuanzineng kexue jishu
With the development of economy, there is an increasing need of nuclear energy, which means that nuclear waste transmutation is becoming more and more important.
YE Shan1, LIU Fulong1, BO Nan1,2,3, WANG Haoran1,2,3, CHENG Hao1, LI Hongwei1, WU Di1, YANG Wansha1,2,3, WEI Jihong1,2,3, MA Tianli1, FAN Qiwen1, WANG Zhiqiang1, LIU Yina1, SONG Mingzhe1, LIU Yuntao1, HE Chuangye1, GUO Bing1
doaj   +1 more source

Prospects for Gamma-Ray Emission from Magnetar Regions in CTAO Observations

The Astrophysical Journal
Recent multiwavelength observations have highlighted magnetars as significant sources of cosmic rays, particularly through their gamma-ray emissions. This study examines three magnetar regions—CXOU J171405.7–31031, Swift J1834−0846, and SGR 1806−20—known
M. F. Sousa, R. Costa Jr., Jaziel G. Coelho, R. C. Dos Anjos   +3 more
doaj   +1 more source