James M. Ryan
University of New Hampshire
580 Papers
3.4K Citations
James M. Ryan is an academic researcher from University of New Hampshire. The author has contributed to research in topics: Gamma ray & Solar flare. The author has an hindex of 50, co-authored 570 publications. Previous affiliations of James M. Ryan include Louisiana State University & University of California, Riverside.
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Papers
Instrument description and performance of the Imaging Gamma-Ray Telescope COMPTEL aboard the Compton Gamma-Ray Observatory
Volker Schoenfelder,H. Aarts,K. Bennett,H. de Boer,J. Clear,Werner Collmar,A. Connors,A. Deerenberg,Roland Diehl,A. von Dordrecht,J. W. den Herder,W. Hermsen,M. Kippen,L. Kuiper,G. G. Lichti,J. A. Lockwood,J. R. Macri,Mark L. McConnell,Derek W. Morris,R. Much,James M. Ryan,G. Simpson,M. Snelling,G. Stacy,Helmut Steinle,Andrew W. Strong,B. N. Swanenburg,B. G. Taylor,C. de Vries,C. Winkler +29 more
TL;DR: The Compton Gamma-Ray Observatory (COMPTEL) as discussed by the authors is a gamma-ray line spectrometer with an angular resolution between 1° and 2° within a large field of view of about 1 steradian.
TeV Gamma-ray Sources from a survey of the Galactic Plane with Milagro
A. A. Abdo,Benjamin William Allen,D. Berley,Sabrina Casanova,C. Chen,D. G. Coyne,Brenda Dingus,R. W. Ellsworth,L. Fleysher,R. Fleysher,M. M. Gonzalez,J. A. Goodman,E. Hays,C. M. Hoffman,B. Hopper,P. H. Hüntemeyer,B. E. Kolterman,C. P. Lansdell,J. T. Linnemann,J. E. McEnery,Allen Mincer,Peter Nemethy,D. Noyes,James M. Ryan,P. M. Saz Parkinson,A. L. Shoup,G. Sinnis,A. J. Smith,G. W. Sullivan,V. Vasileiou,G. P. Walker,David A. Williams,X. W. Xu,G. B. Yodh +33 more
TL;DR: A survey of Galactic gamma-ray sources at a median energy of ~20 TeV has been performed using the Milagro Gamma-Ray Observatory as mentioned in this paper, where the authors detected eight sources with pre-trial significances > 4.5 σ in the region of Galactic longitude l [30°, 220°] and latitude b [-10°, 10°].
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Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List
A. A. Abdo,A. A. Abdo,B. T. Allen,B. T. Allen,T. Aune,D. Berley,C. Chen,G. E. Christopher,Tyce DeYoung,Brenda Dingus,R. W. Ellsworth,Maria Magdalena González,J. A. Goodman,E. Hays,C. M. Hoffman,P. Hüntemeyer,B. E. Kolterman,J. T. Linnemann,Julie McEnery,T. Morgan,Allen Mincer,Peter Nemethy,J. Pretz,James M. Ryan,P. M. Saz Parkinson,A. Shoup,G. Sinnis,A. J. Smith,V. Vasileiou,V. Vasileiou,G. P. Walker,David A. Williams,G. B. Yodh +32 more
TL;DR: In this article, a search of the Milagro sky map for spatial correlations with sources from a subset of the recent Fermi Bright Source List (BSL) is presented.
Discovery of Localized Regions of Excess 10-TeV Cosmic Rays
A. A. Abdo,Benjamin William Allen,T. Aune,D. Berley,E. Blaufuss,Sabrina Casanova,C. Chen,Brenda Dingus,R. W. Ellsworth,L. Fleysher,R. Fleysher,Maria Magdalena González,J. A. Goodman,C. M. Hoffman,P. H. Hüntemeyer,B. E. Kolterman,C. P. Lansdell,J. T. Linnemann,Julie McEnery,Allen Mincer,Peter Nemethy,D. Noyes,J. Pretz,James M. Ryan,P. M. Saz Parkinson,A. Shoup,G. Sinnis,A. J. Smith,G. W. Sullivan,V. Vasileiou,G. P. Walker,David A. Williams,G. B. Yodh +32 more
TL;DR: The 7 year data set of the Milagro TeV observatory contains 2.2 x 10(11) events of which most are due to hadronic cosmic rays, and excess emission on angular scales of approximately 10 degrees has been found in two localized regions of unknown origin with greater than 12sigma significance.
The large-scale cosmic-ray anisotropy as observed with milagro
A. A. Abdo,A. A. Abdo,B. T. Allen,T. Aune,David Berley,Sabrina Casanova,Chang-Hsiao Chen,Brenda Dingus,R. W. Ellsworth,L. Fleysher,R. Fleysher,M. M. Gonzalez,J. A. Goodman,C. M. Hoffman,B. Hopper,P. H. Hüntemeyer,B. E. Kolterman,C. P. Lansdell,J. T. Linnemann,Julie McEnery,Allen Mincer,Peter Nemethy,D. Noyes,J. Pretz,James M. Ryan,P. M. Saz Parkinson,A. L. Shoup,G. Sinnis,A. J. Smith,G. W. Sullivan,V. Vasileiou,G. P. Walker,David A. Williams,G. B. Yodh +33 more
TL;DR: In this article, a harmonic analysis of the large-scale cosmic-ray (CR) anisotropy as observed by the Milagro observatory is presented, which is a water Cherenkov detector located in the Jemez mountains near Los Alamos, New Mexico.