Zobrazeno 1 - 10
of 18
pro vyhledávání: '"T. D. Willis"'
Autor:
H. A. Mayer-Hasselwander, Peter F. Michelson, P. L. Nolan, D. L. Bertsch, Olaf Reimer, W. F. Tompkins, C. E. Fichtel, A. W. Chen, R. C. Hartman, D. J. Thompson, T. D. Willis, D. A. Kniffen, Gottfried Kanbach, L. M. McDonald, J. A. Esposito, Brenda Dingus, Reshmi Mukherjee, C. von Montigny, Yiing Lin, Stanley D. Hunter, P. Sreekumar, E. J. Schneid
Publikováno v:
The Astrophysical Journal Supplement Series. 123:203-217
The Energetic Gamma-Ray Experiment Telescope (EGRET) on the Compton Gamma-Ray Observatory has been operating for over 7 yr since its launch in 1991 April. This span of time far exceeds the design lifetime of 2 yr. As the instrument has aged, several
Autor:
H. A. Mayer-Hasselwander, D. A. Kniffen, R. C. Hartman, Yiing Lin, Peter F. Michelson, P. L. Nolan, D. J. Thompson, Brenda Dingus, T. D. Willis, D. L. Bertsch, J. A. Esposito, Stanley D. Hunter, Reshmi Mukherjee, P. Sreekumar, E. J. Schneid, C. von Montigny, C. E. Fichtel, Gottfried Kanbach, J. R. Mattox
Publikováno v:
The Astrophysical Journal. 476:L11-L14
In the course of the Compton Gamma Ray Observatory mission, the EGRET telescope has detected 14 BL Lacertae objects in high-energy gamma rays through Phase 4. According to the BL Lac sample in Ciliegi, Bassani, & Caroli, two of these 14 sources are X
Autor:
P. Sreekumar, D. L. Bertsch, B. L. Dingus, J. A. Esposito, C. E. Fichtel, R. C. Hartman, S. D. Hunter, G. Kanbach, D. A. Kniffen, Y. C. Lin, H. A. Mayer‐Hasselwander, P. F. Michelson, C. von Montigny, A. Mucke, R. Mukherjee, P. L. Nolan, M. Pohl, O. Reimer, E. Schneid, J. G. Stacy, F. W. Stecker, D. J. Thompson, T. D. Willis
The all-sky survey in high-energy gamma rays (E$>$30 MeV) carried out by the Energetic Gamma Ray Experiment Telescope (EGRET) aboard the Compton Gamma-Ray Observatory provides a unique opportunity to examine in detail the diffuse gamma-ray emission.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a035fabafa7bb0362f8cb78303534780
Autor:
C. E. Fichtel, Peter F. Michelson, H. A. Mayer-Hasselwander, J. R. Mattox, Reshmi Mukherjee, R. C. Hartman, E. J. Schneid, C. von Montigny, D. J. Thompson, D. A. Kniffen, J. A. Esposito, Stanley D. Hunter, P. Sreekumar, J. M. Fierro, Brenda Dingus, T. D. Willis, Gottfried Kanbach, P. L. Nolan, D. L. Bertsch, James Chiang, Y. C. Lin
The EGRET instrument aboard the Compton Gamma Ray Observatory (CGRO) has completed the first all-sky survey in high-energy gamma rays and has repeatedly viewed selected portions of the sky. Analysis of the region with galactic latitude $+10\arcdeg <
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05011c998a7cf540e7bc70e9e047b047
http://arxiv.org/abs/astro-ph/9509023
http://arxiv.org/abs/astro-ph/9509023
Autor:
R. C. Hartman, Stanley D. Hunter, D. J. Thompson, P. Sreekumar, E. J. Schneid, C. E. Fichtel, H. A. Mayer-Hasselwander, J. A. Esposito, James Chiang, T. D. Willis, J. M. Fierro, Brenda Dingus, Peter F. Michelson, D. A. Kniffen, C. von Montigny, J. R. Mattox, Y. C. Lin, P. L. Nolan, D. L. Bertsch, Gottfried Kanbach
Publikováno v:
The Gamma Ray Sky with Compton GRO and SIGMA ISBN: 9789401040358
The EGRET instrument on the Compton Gamma Ray Observatory, which detects photons in the energy range 30 MeV to 30 GeV, has detected about 40 sources of gamma rays (>100 MeV) at high galactic latitudes. Most of these appear to be associated with brigh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce5bc87f00b8053c22b5b4f80a8bf0e0
https://doi.org/10.1007/978-94-011-0067-0_8
https://doi.org/10.1007/978-94-011-0067-0_8
Autor:
Brenda Dingus, J. R. Mattox, K. T. S. Brazier, Peter F. Michelson, C. E. Fichtel, Stanley D. Hunter, P. Sreekumar, R. C. Hartman, J. A. Esposito, E. J. Schneid, T. D. Willis, C. von Montigny, D. J. Thompson, D. A. Kniffen, H. A. Mayer-Hasselwander, Gottfried Kanbach, J. Chiang, Y. C. Lin, P. L. Nolan, D. L. Bertsch, J. M. Fierro
Publikováno v:
AIP Conference Proceedings.
The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Observatory has detected, with a high degree of certainty, more than 20 active galactic nuclei (AGN) in high energy gamma‐ray (E≳100 MeV). All of these sources appear to be membe
Autor:
Gottfried Kanbach, E. J. Schneid, H. A. Mayer-Hasselwander, R. C. Hartman, D. J. Thompson, D. L. Bertsch, P. L. Nolan, Stanley D. Hunter, P. Sreekumar, T. D. Willis, Peter F. Michelson, C. E. Fichtel, Y. C. Lin, James Chiang, K. T. S. Brazier, J. M. Fierro, J. A. Esposito, H. D. Radecke, Brenda Dingus, J. R. Mattox, C. von Montigny, D. A. Kniffen
Publikováno v:
AIP Conference Proceedings.
The EGRET instrument aboard the Compton Gamma‐Ray Observatory has detected gamma‐ray emission from many Active Galactic Nuclei during the Phase I & II observation periods. With the continuing discovery of gamma‐ray loud AGN, it becomes increasi
Autor:
R. C. Hartman, D. A. Kniffen, D. J. Thompson, Stanley D. Hunter, P. Sreekumar, J. M. Fierro, James Chiang, E. J. Schneid, H. A. Mayer-Hasselwander, K. T. S. Brazier, H. D. Radecke, T. D. Willis, C. E. Fichtel, P. L. Nolan, D. L. Bertsch, Gottfried Kanbach, Y. C. Lin, J. A. Esposito, J. R. Mattox, Brenda Dingus, P. F. Michelson, C. von Montigny
Publikováno v:
AIP Conference Proceedings.
The EGRET phase 1 & 2 observations of Geminga have been used to determine an optimum contemporary ephemeris using the ‘‘Z2n timing method.’’ The residuals for this linear ephemeris over 2.1 years are less than 5 ms, suggesting that Geminga ha
Autor:
J. M. Fierro, J. R. Mattox, H. D. Radeck, D. A. Kniffen, K. T. S. Brazier, Gottfried Kanbach, R. C. Hartman, D. J. Thompson, H. A. Mayer-Hasselwander, Brenda Dingus, J. A. Esposito, C. von Montigny, P. L. Nolan, Stanley D. Hunter, P. Sreekumar, D. L. Bertsch, E. J. Schneid, C. E. Fichtel, T. D. Willis, Peter F. Michelson, Y. C. Lin, James Chiang
Publikováno v:
AIP Conference Proceedings.
The EGRET gamma‐ray telescope has detected a persistent source of high energy gamma rays which has not been identified. It was detected in seven different observations in 1991–1993. Variations in the spectrum, combined with a galactic latitude of
Autor:
Gottfried Kanbach, D. A. Kniffen, R. C. Hartman, Stanley D. Hunter, P. Sreekumar, D. J. Thompson, P. L. Nolan, J. M. Fierro, H. A. Mayer-Hasselwander, Brenda Dingus, D. L. Bertsch, J. A. Esposito, E. J. Schneid, J. R. Mattox, Peter F. Michelson, Y. C. Lin, C. E. Fichtel, Reshmi Mukherjee, S. W. Digel, T. D. Willis, C. von Montigny
Publikováno v:
The Astrophysical Journal. 467:589