Related papers: Gamma-ray albedo of the moon

Gamma Ray Bursts as cosmological tools

The use of Gamma Ray Bursts as ``standard candles'' has been made possible by the recent discovery of a very tight correlation between their rest frame intrinsic properties. This correlation relates the GRB prompt emission peak spectral…

Astrophysics · Physics 2009-11-13 G. Ghirlanda , G. Ghisellini , L. Nava , C. Firmani

The Connection between Radio and Gamma-ray Emission in Active Galactic Nuclei

Radio and gamma-ray emission from active galactic nuclei (AGN) are thought to share a common origin, related to the ejection phenomena in the vicinity of supermassive black holes. Thanks to its sensitivity, surveying capability, and broad…

Cosmology and Nongalactic Astrophysics · Physics 2010-01-29 M. Giroletti , A. Reimer , L. Fuhrmann , V. Pavlidou , J. L. Richards

Gamma-Ray Absorption at High Redshifts and the Gamma-Ray Background

We present results of a calculation of absorption of 10-500 GeV gamma-rays at high redshifts. This calculation requires the determination of the high- redshift evolution of the full spectral energy distribution of the intergalactic photon…

Astrophysics · Physics 2007-05-23 F. W. Stecker , M. H. Salamon

GLAST, the Gamma-ray Large Area Space Telescope

GLAST, a detector for cosmic gamma rays in the range from 20 MeV to 300 GeV, will be launched in space in 2005. Breakthroughs are expected in particular in the study of particle acceleration mechanisms in space and of gamma ray bursts, and…

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Prospects for the detection of the prompt very-high-energy emission from $\rm\gamma$-ray bursts with the High Altitude Detection of Astronomical Radiation experiment

The observation of very-high-energy (VHE, $\rm >10~GeV$) $\gamma$-ray emission from $\rm \gamma$-ray bursts (GRBs), especially in the prompt phase, will provide critical information for understanding many aspects of their nature including…

High Energy Astrophysical Phenomena · Physics 2021-12-22 Guang-Guang Xin , Yu-Hua Yao , Xiang-Li Qian , Cheng Liu , Qi Gao , Dan-Zeng-Luo-Bu , You-Liang Feng , Quan-Bu Gou , Hong-Bo Hu , Hai-Jin Li , Mao-Yuan Liu , Wei Liu , Bing-Qiang Qiao , Zhen Wang , Yi Zhang , Hao Cai , Tian-Lu Chen , Yi-Qing Guo

Energy calibration of LHAASO-KM2A using the cosmic ray Moon shadow

We present a precise measurement of the westward, rigidity-dependent shift of the Moon's shadow using three and a half years of cosmic-ray data collected by the Kilometer Square Array (KM2A) of the Large High Altitude Air Shower Observatory…

High Energy Astrophysical Phenomena · Physics 2026-01-08 Zhen Cao , F. Aharonian , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , W. Bian , J. Blunier , A. V. Bukevich , C. M. Cai , Y. Y. Cai , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , E. S. Chen , G. H. Chen , H. K. Chen , L. F. Chen , Liang Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , X. B. Chen , X. J. Chen , X. P. Chen , Y. Chen , N. Cheng , Q. Y. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , Y. X. Diao , A. J. Dong , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , J. H. Fang , K. Fang , C. F. Feng , H. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. Feng , Y. L. Feng , S. Gabici , B. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , T. T. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , J. Guo , K. J. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , R. P. Han , O. A. Hannuksela , M. Hasan , H. H. He , H. N. He , J. Y. He , X. Y. He , Y. He , S. Hernández-Cadena , B. W. Hou , C. Hou , X. Hou , H. B. Hu , S. C. Hu , C. Huang , D. H. Huang , J. J. Huang , X. L. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Y. Y. Huang , A. Inventar , X. L. Ji , H. Y. Jia , K. Jia , H. B. Jiang , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , S. Kaci , M. M. Kang , I. Karpikov , D. Khangulyan , D. Kuleshov , K. Kurinov , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , Jian Li , Jie Li , K. Li , L. Li , R. L. Li , S. D. Li , T. Y. Li , W. L. Li , X. R. Li , Xin Li , Y. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , D. B. Liu , H. Liu , J. Liu , J. L. Liu , J. R. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , X. Liu , Y. Liu , Y. Liu , Y. N. Liu , Y. Q. Lou , Q. Luo , Y. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , I. O. Maliy , J. R. Mao , Z. Min , W. Mitthumsiri , Y. Mizuno , G. B. Mou , A. Neronov , K. C. Y. Ng , M. Y. Ni , L. Nie , L. J. Ou , Z. W. Ou , P. Pattarakijwanich , Z. Y. Pei , D. Y. Peng , J. C. Qi , M. Y. Qi , J. J. Qin , D. Qu , A. Raza , C. Y. Ren , D. Ruffolo , A. Sáiz , D. Savchenko , D. Semikoz , L. Shao , O. Shchegolev , Y. Z. Shen , X. D. Sheng , Z. D. Shi , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , D. X. Sun , H. Sun , J. X. Sun , Q. N. Sun , X. N. Sun , Z. B. Sun , N. H. Tabasam , J. Takata , P. H. T. Tam , H. B. Tan , Q. W. Tang , R. Tang , Z. B. Tang , W. W. Tian , C. N. Tong , L. H. Wan , C. Wang , D. H. Wang , G. W. Wang , H. G. Wang , J. C. Wang , K. Wang , Kai Wang , Kai Wang , L. P. Wang , L. Y. Wang , L. Y. Wang , R. Wang , W. Wang , X. G. Wang , X. J. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Z. H. Wang , Z. X. Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , S. S. Weng , C. Y. Wu , H. R. Wu , Q. W. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , Y. F. Xiao , Y. L. Xin , H. D. Xing , Y. Xing , D. R. Xiong , B. N. Xu , C. Y. Xu , D. L. Xu , R. F. Xu , R. X. Xu , S. S. Xu , W. L. Xu , L. Xue , D. H. Yan , T. Yan , C. W. Yang , C. Y. Yang , F. F. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , W. X. Yang , Z. H. Yang , Z. G. Yao , X. A. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , X. T. Zeng , M. Zha , B. B. Zhang , B. T. Zhang , C. Zhang , H. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , J. Y. Zhang , Li Zhang , P. F. Zhang , R. Zhang , S. R. Zhang , S. S. Zhang , S. Y. Zhang , W. Zhang , W. Y. Zhang , X. Zhang , X. P. Zhang , Yi Zhang , Yong Zhang , Z. P. Zhang , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , X. H. Zhao , Z. H. Zhao , F. Zheng , T. C. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , X. X. Zhou , B. Y. Zhu , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , Y. C. Zou , X. Zuo , Faisal Akram

Lunar Laser Ranging Science: Gravitational Physics and Lunar Interior and Geodesy

Laser pulses fired at retroreflectors on the Moon provide very accurate ranges. Analysis yields information on Earth, Moon, and orbit. The highly accurate retroreflector positions have uncertainties less than a meter. Tides on the Moon show…

General Relativity and Quantum Cosmology · Physics 2010-03-24 James G. Williams , Slava G. Turyshev , Dale H. Boggs , J. Todd Ratcliff

Pointing calibration of GroundBIRD telescope using Moon observation data

Understanding telescope pointing (i.e., line of sight) is important for observing the cosmic microwave background (CMB) and astronomical objects. The Moon is a candidate astronomical source for pointing calibration. Although the visible…

Instrumentation and Methods for Astrophysics · Physics 2024-01-19 Y. Sueno , J. J. A. Baselmans , A. H. M. Coppens , R. T Génova-Santos , M. Hattori , S. Honda , K. Karatsu , H. Kutsuma , K. Lee , T. Nagasaki , S. Oguri , C. Otani , M. Peel , J. Suzuki , O. Tajima , T. Tanaka , M. Tsujii , D. J. Thoen , E. Won

Measuring Ambient Densities and Lorentz Factors of Gamma-Ray Bursts from GeV and Optical Observations

Fermi satellite discovered that cosmological gamma-ray bursts (GRBs) are accompanied by long GeV flashes. In two GRBs, an optical counterpart of the GeV flash has been detected. Recent work suggests that the GeV+optical flash is emitted by…

High Energy Astrophysical Phenomena · Physics 2015-11-04 Romain Hascoët , Indrek Vurm , Andrei M. Beloborodov

Anticoincidence Detector for GLAST

The Gamma-ray Large Area Space Telescope (GLAST) is now being designed by a number of collaborating institutions. It will study the cosmic gamma radiation from 20 MeV to 300 GeV with high precision and sensitivity, greatly expanding on the…

Astrophysics · Physics 2007-05-23 A. Moiseev , J. Norris , J. Ormes , S. Ritz , D. Thompson

Glancing views of the Earth. From a lunar eclipse to an exoplanetary transit

It has been posited that lunar eclipse observations may help predict the in-transit signature of Earth-like extrasolar planets. However, a comparative analysis of the two phenomena addressing in detail the transport of stellar light through…

Solar and Stellar Astrophysics · Physics 2015-06-05 A. García Muñoz , M. R. Zapatero Osorio , R. Barrena , P. Montañés-Rodríguez , E. L. Martín , E. Pallé

Accounting for the Sun and the Moon in Fermi-LAT Analysis

The Sun and the Moon are quiescent gamma-ray sources that are clearly detectable in Fermi-LAT data. While moving through the sky, the Sun and the Moon can be a significant background in the analysis of Fermi-LAT data if they pass through…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Gudlaugur Johannesson , Elena Orlando

Prospects for detection of the lunar Cerenkov emission by the UHE Cosmic Rays and Neutrinos using the GMRT and the Ooty Radio Telescope

Searching for the Ultra high energy Cosmic rays and Neutrinos of $> 10^{20} eV$ is of great cosmological importance. A powerful technique is to search for the \v{C}erenkov radio emission caused by UHECR or UHE neutrinos impinging on the…

Astrophysics · Physics 2008-05-29 Govind Swarup , Sukanta Panda

Observation of the Shadowing of Cosmic Rays by the Moon using a Deep Underground Detector

Using data collected by the MACRO experiment during the years 1989-1996, we show evidence for the shadow of the moon in the underground cosmic ray flux with a significance of 3.6 sigma. This detection of the shadowing effect is the first by…

High Energy Physics - Experiment · Physics 2008-11-26 The MACRO Collaboration , M. Ambrosio et al

Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station

Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station utilizing the data up to November…

High Energy Astrophysical Phenomena · Physics 2018-06-27 O. Adriani , Y. Akaike , K. Asano , Y. Asaoka , M. G. Bagliesi , E. Berti , G. Bigongiari , W. R. Binns , S. Bonechi , M. Bongi , P. Brogi , J. H. Buckley , N. Cannady , G. Castellini , C. Checchia , M. L. Cherry , G. Collazuol , V. Di Felice , K. Ebisawa , H. Fuke , T. G. Guzik , T. Hams , M. Hareyama , N. Hasebe , K. Hibino , M. Ichimura , K. Ioka , W. Ishizaki , M. H. Israel , K. Kasahara , J. Kataoka , R. Kataoka , Y. Katayose , C. Kato , N. Kawanaka , Y. Kawakubo , K. Kohri , H. S. Krawczynski , J. F. Krizmanic , T. Lomtadze , P. Maestro , P. S. Marrocchesi , A. M. Messineo , J. W. Mitchell , S. Miyake , A. A. Moiseev , K. Mori , M. Mori , N. Mori , H. M. Motz , K. Munakata , H. Murakami , S. Nakahira , J. Nishimura , G. A. de Nolfo , S. Okuno , J. F. Ormes , S. Ozawa , L. Pacini , F. Palma , P. Papini , A. V. Penacchioni , B. F. Rauch , S. B. Ricciarini , K. Sakai , T. Sakamoto , M. Sasaki , Y. Shimizu , A. Shiomi , R. Sparvoli , P. Spillantini , F. Stolzi , J. E. Suh , A. Sulaj , I. Takahashi , M. Takayanagi , M. Takita , T. Tamura , N. Tateyama , T. Terasawa , H. Tomida , S. Torii , Y. Tsunesada , Y. Uchihori , S. Ueno , E. Vannuccini , J. P. Wefel , K. Yamaoka , S. Yanagita , A. Yoshida , K. Yoshida

A Gamma-Ray Burst Mission to Investigate the Properties of Dark Energy

[Abridged] Very recently, relations between the peak energy of Gamma-Ray Burst burst spectra, the isotropic-equivalent energy of the burst, and the radiated energy of the burst have been found. In a way that is exactly analogous to the way…

Astrophysics · Physics 2007-05-23 D. Q. Lamb , G. R. Ricker , D. Lazzati , G. Ghirlanda , G. Ghisellini , C. Firmani , L. Amati , J. -L. Atteia , V. Avila-Reese , S. Burles , N. Butler , H. -W. Chen , E. Costa , J. Doty , F. Frontera , A. Fruchter , P. Garnavich , C. Graziani , J. G. Jernigan , N. Kawai , P. Mazzali , P. Meszaros , L. Piro , T. Sakamoto , K. Stanek , M. Vietri , M. della Valle , J. Villasenor , B. Zhang

Galaxy And Mass Assembly (GAMA): Spectroscopic analysis

The Galaxy And Mass Assembly (GAMA) survey is a multiwavelength photometric and spectroscopic survey, using the AAOmega spectrograph on the Anglo-Australian Telescope to obtain spectra for up to ~300000 galaxies over 280 square degrees, to…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 A. M. Hopkins , S. P. Driver , S. Brough , M. S. Owers , A. E. Bauer , M. L. P. Gunawardhana , M. E. Cluver , M. Colless , C. Foster , M. A. Lara-Lopez , I. Roseboom , R. Sharp , O. Steele , D. Thomas , I. K. Baldry , M. J. I. Brown , J. Liske , P. Norberg , A. S. G. Robotham , S. Bamford , J. Bland-Hawthorn , M. J. Drinkwater , J. Loveday , M. Meyer , J. A. Peacock , R. Tuffs , N. Agius , M. Alpaslan , E. Andrae , E. Cameron , S. Cole , J. H. Y. Ching , L. Christodoulou , C. Conselice , S. Croom , N. J. G. Cross , R. De Propris , J. Delhaize , L. Dunne , S. Eales , S. Ellis , C. S. Frenk , A. Graham , M. W. Grootes , B. Haussler , C. Heymans , D. Hill , B. Hoyle , M. Hudson , M. Jarvis , J. Johansson , D. H. Jones , E. van Kampen , L. Kelvin , K. Kuijken , A. Lopez-Sanchez , S. Maddox , B. Madore , C. Maraston , T. McNaught-Roberts , R. C. Nichol , S. Oliver , H. Parkinson , S. Penny , S. Phillipps , K. A. Pimbblet , T. Ponman , C. C. Popescu , M. Prescott , R. Proctor , E. M. Sadler , A. E. Sansom , M. Seibert , L. Staveley-Smith , W. Sutherland , E. Taylor , L. Van Waerbeke , J. A. Vazquez-Mata , S. Warren , D. B. Wijesinghe , V. Wild , S. Wilkins

AGN astrophysics via multi-frequency monitoring of gamma-ray blazars in the Fermi-GST era

The F-GAMMA-project is the coordinated effort of several observatories to understand the AGN phenomenon and specifically blazars via multi-frequency monitoring in collaboration with the {\sl Fermi}-GST satellite since January 2007. The core…

Astrophysics of Galaxies · Physics 2009-10-06 E. Angelakis , L. Fuhrmann , J. A. Zensus , I. Nestoras , N. Marchili , T. P. Krichbaum , H. Ungerechts , W. Max-Moerbeck , V. Pavlidou , T. J. Pearson , A. C. S. Readhead , J. L. Richards , M. A. Stevenson

Broadband Spectral Properties of Bright High-Energy Gamma-Ray Bursts Observed with BATSE and EGRET

We present the spectral analysis of duration-integrated broadband spectra (in $\sim30 $keV$-200 $MeV) of 15 bright BATSE gamma-ray bursts (GRBs). Some GRB spectra are very hard, with their spectral peak energies being above the BATSE LAD…

Astrophysics · Physics 2009-11-13 Y. Kaneko , M. M. Gonzalez , R. Preece , B. L. Dingus , M. S. Briggs

Detecting the early optical flashes of gamma-ray bursts with small telescope arrays

We present an observational approach for the independent detection of the early optical emission of long gamma-ray bursts (GRBs). For this purpose, we explore the potential of the Large Array Survey Telescope (LAST). This array of small…

High Energy Astrophysical Phenomena · Physics 2024-07-25 Iftach Sadeh