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Title:
Milagro Observations of Multi-TeV Emission from Galactic Sources in the Fermi Bright Source List [ Erratum: 2009ApJ...703L.185A ]
Authors:
Abdo, A. A.; Allen, B. T.; Aune, T.; Berley, D.; Chen, C.; Christopher, G. E.; De Young, T.; Dingus, B. L.; Ellsworth, R. W.; Gonzalez, M. M.; Goodman, J. A.; Hays, E.; Hoffman, C. M.; Hüntemeyer, P. H.; Kolterman, B. E.; Linnemann, J. T.; McEnery, J. E.; Morgan, T.; Mincer, A. I.; Nemethy, P.; Pretz, J.; Ryan, J. M.; Saz Parkinson, P. M.; Shoup, A.; Sinnis, G.; Smith, A. J.; Vasileiou, V.; Walker, G. P.; Williams, D. A.; Yodh, G. B.
Affiliation:
AA( Department of Physics and Astronomy, Michigan State University, 3245 BioMedical Physical Sciences Building, East Lansing, MI 48824, USA ; Current address: Space Science Division, Naval Research Laboratory, Washington, DC 20375, USA. ), AB( Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA ; Current address: Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA. ), AC( Santa Cruz Institute for Particle Physics, University of California, 1156 High Street, Santa Cruz, CA 95064, USA ), AD( Department of Physics, University of Maryland, College Park, MD 20742, USA ), AE( Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA ), AF( Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA ), AG( Department of Physics, Pennsylvania State University, University Park, PA 16802, USA ), AH( Group P-23, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA ), AI( Department of Physics and Astronomy, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA ), AJ( Instituto de Astronomía, Universidad Nacional Autónoma de México, 04510 México, D.F., Mexico ), AK( Department of Physics, University of Maryland, College Park, MD 20742, USA ), AL( NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ), AM( Group P-23, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA ), AN( Department of Physics, University of Utah, Salt Lake City, UT 84112, USA ), AO( Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA ), AP( Department of Physics and Astronomy, Michigan State University, 3245 BioMedical Physical Sciences Building, East Lansing, MI 48824, USA ), AQ( NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA ), AR( Department of Physics, University of New Hampshire, Morse Hall, Durham, NH 03824, USA ), AS( Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA ), AT( Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USA ), AU( Group P-23, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA ), AV( Department of Physics, University of New Hampshire, Morse Hall, Durham, NH 03824, USA ), AW( Santa Cruz Institute for Particle Physics, University of California, 1156 High Street, Santa Cruz, CA 95064, USA ), AX( Ohio State University, Lima, OH 45804, USA ), AY( Group P-23, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA ), AZ( Department of Physics, University of Maryland, College Park, MD 20742, USA ), BA( Department of Physics, University of Maryland, College Park, MD 20742, USA ; CRESST NASA/Goddard Space Flight Center, MD 20771, USA ), BB( Group P-23, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA ; Current address: National Security Technologies, Las Vegas, NV 89102, USA.), BC( Santa Cruz Institute for Particle Physics, University of California, 1156 High Street, Santa Cruz, CA 95064, USA ), BD( Department of Physics and Astronomy, University of California, Irvine, CA 92697, USA )
Publication:
The Astrophysical Journal Letters, Volume 700, Issue 2, pp. L127-L131 (2009). (ApJL Homepage)
Publication Date:
08/2009
Origin:
IOP
ApJ Keywords:
gamma rays: observations, pulsars: general, supernova remnants
DOI:
10.1088/0004-637X/700/2/L127
Bibliographic Code:
2009ApJ...700L.127A

Abstract

We present the result of a search of the Milagro sky map for spatial correlations with sources from a subset of the recent Fermi Bright Source List (BSL). The BSL consists of the 205 most significant sources detected above 100 MeV by the Fermi Large Area Telescope. We select sources based on their categorization in the BSL, taking all confirmed or possible Galactic sources in the field of view of Milagro. Of the 34 Fermi sources selected, 14 are observed by Milagro at a significance of 3 standard deviations or more. We conduct this search with a new analysis which employs newly optimized gamma-hadron separation and utilizes the full eight-year Milagro data set. Milagro is sensitive to gamma rays with energy from 1 to 100 TeV with a peak sensitivity from 10 to 50 TeV depending on the source spectrum and declination. These results extend the observation of these sources far above the Fermi energy band. With the new analysis and additional data, multi-TeV emission is definitively observed associated with the Fermi pulsar, J2229.0+6114, in the Boomerang pulsar wind nebula (PWN). Furthermore, an extended region of multi-TeV emission is associated with the Fermi pulsar, J0634.0+1745, the Geminga pulsar.

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