GeV gamma-ray sources

Lamb, R. C.; Macomb, D. J.
June 2000
AIP Conference Proceedings;2000, Vol. 515 Issue 1, p288
Academic Journal
We report on the preliminary extension of our work on cataloging the GeV sky to approximately 7 years of CGRO/EGRET observations with special emphasis on a search for transient sources. The search method and significance levels are presented. Our initial results on 13 possible transients indicate that 3 may be new gamma-ray sources. Sixteen new steady GeV sources are also detected, 3 of which have never been reported as gamma-ray sources. © 2000 American Institute of Physics.


Related Articles

  • New Beast in the Galaxy. Naeye, Robert // Astronomy;Oct2000, Vol. 28 Issue 10, p28 

    Presents information on the discovery of a microquasar called LS 5039. Discussion on microquasars; Details on the gamma-ray sources seen by the EGRET instrument of Compton Gamma-Ray Observatory. INSET: Infalling Gas Clouds.

  • A review of Cygnus X-1 soft γ-ray observations. Ling, James C. // AIP Conference Proceedings;2001, Vol. 587 Issue 1, p135 

    Since the first discovery of Cygnus X-1 in the mid 1960's, the source has been the subject of intense soft γ-ray (30 kev - 10 MeV) observations by many balloon and satellite experiments. A large body of spectral and temporal information about the source has been gathered to date. While these...

  • Highly Accurate Determination of the Coordinates and the Earth’s Rotation Parameters Involving the Svetloe VLBI Observatory. Finkelstein, A.M.; Ipatov, A.V.; Smolentsev, S.G.; Grachev, V.G.; Rakhimov, I.A.; Malkin, Z.M. // Astronomy Letters;Oct2003, Vol. 29 Issue 10, p667 

    We present the results of our processing of the first observations of extragalactic radio sources obtained with the eight-element International VLBI Network, which includes the Svetloe Russian Radio Astronomy Observatory equipped with a Mark 3A recording terminal. Our observations and their...

  • Gamma-ray bursts: Visible at last?  // Sky & Telescope;Jul97, Vol. 94 Issue 1, p19 

    Looks into the detection of a gamma-ray burst by the artificial satellite BeppoSAX. X-ray afterglow; Transient optical signal related to a gamma-ray burst; Controversy over origin of the burst.

  • Galactic population of radio and gamma-ray pulsars. Gonthier, Peter L.; Ouellette, Michelle S.; O’Brien, Shawn; Berrier, Joel; Harding, Alice K. // AIP Conference Proceedings;2001, Vol. 586 Issue 1, p547 

    We simulate the characteristics of the Galactic population of radio and gamma-ray pulsars using Monte Carlo techniques. At birth, neutron stars are spatially distributed with supernova-kick velocities in the Galactic disk and randomly dispersed in age back to 10[SUP9] years. They are evolved in...

  • Sensitivity of Fermi-LAT pulsar blind searches. Dormody, Michael H. // AIP Conference Proceedings;8/18/2011, Vol. 1357 Issue 1, p253 

    There have been over two dozen gamma-ray pulsars discovered in blind frequency searches of Fermi-LAT photon data. While there is a general idea of the blind search sensitivity when compared to the radio-loud pulsar sensitivity, it has not been well established quantitatively. We detail a...

  • Constraining pulsar gap models with the light-curve and flux properties of the gamma-ray pulsar population. Pierbattista, M.; Grenier, I.; Harding, A.; Gonthier, P. L. // AIP Conference Proceedings;8/18/2011, Vol. 1357 Issue 1, p249 

    We compare population synthesis results for inner and outer magnetosphere emission models with the various characteristics measured in the first LAT pulsar catalogue for both the radio-loud and radio-weak or radio-quiet γ-ray pulsars. We show that all models fail to reproduce the...

  • Population Synthesis of Radio and Gamma-ray Pulsars in the Fermi Era. Gonthier, Peter L.; Billman, Caleb; Harding, Alice K.; Grenier, Isabelle A.; Pierbattista, Marco // AIP Conference Proceedings;8/18/2011, Vol. 1357 Issue 1, p245 

    We present results of our pulsar population synthesis of normal pulsars from the Galactic disk using our previously developed computer code. On the same footing, we use slot gap and outer gap models for gamma-ray emission from normal pulsars to obtain statistics of radio-loud and radio-quiet...

  • Satellites get a whiff of ozone-eating chemicals. Cowen, Robert C. // Christian Science Monitor;9/25/96, Vol. 88 Issue 211, p14 

    Reports that instruments were orbited by the United States and Japan, which complement an ozone probe working since January 1996 on Europe's Earth observing ERS-2. Information on the satellites observing the earth; Comments from scientist David Hoffman; Increases in ozone-depleting chemicals.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics