A STATISTICAL APPROACH TO RECOGNIZING SOURCE CLASSES FOR UNASSOCIATED SOURCES IN THE FIRST FERMI-LAT CATALOG

被引：97

作者：

Ackermann, M. ^{[1
]}

Ajello, M. ^{[2
,3
]}

Allafort, A. ^{[2
,3
]}

Antolini, E. ^{[4
,5
]}

Baldini, L. ^{[6
]}

Ballet, J. ^{[7
]}

Barbiellini, G. ^{[8
,9
]}

Bastieri, D. ^{[10
,11
]}

Bellazzini, R. ^{[6
]}

Berenji, B. ^{[2
,3
]}

Blandford, R. D. ^{[2
,3
]}

Bloom, E. D. ^{[2
,3
]}

Bonamente, E. ^{[4
,5
]}

Borgland, A. W. ^{[2
,3
]}

Bouvier, A. ^{[12
,13
]}

Brandt, T. J. ^{[14
,15
]}

Bregeon, J. ^{[6
]}

Brigida, M. ^{[16
,17
,18
]}

Bruel, P. ^{[19
]}

Buehler, R. ^{[2
,3
]}

Burnett, T. H. ^{[20
]}

Buson, S. ^{[10
,11
]}

Caliandro, G. A. ^{[21
]}

Cameron, R. A. ^{[2
,3
]}

Caraveo, P. A. ^{[22
]}

Casandjian, J. M. ^{[7
]}

Cavazzuti, E. ^{[23
]}

Cecchi, C. ^{[4
,5
]}

Celik, O. ^{[24
,25
,26
,27
]}

Charles, E. ^{[2
,3
]}

Chekhtman, A. ^{[28
]}

Chen, A. W. ^{[22
]}

Cheung, C. C. ^{[29
]}

Chiang, J. ^{[2
,3
]}

Ciprini, S. ^{[5
,23
]}

Claus, R. ^{[2
,3
]}

Cohen-Tanugi, J. ^{[30
]}

Conrad, J. ^{[31
,32
]}

Cutini, S. ^{[23
]}

de Angelis, A. ^{[33
,34
]}

DeCesar, M. E. ^{[24
,35
,36
]}

De Luca, A. ^{[37
]}

de Palma, F. ^{[16
,17
,18
]}

Dermer, C. D. ^{[19
]}

do Couto e Silva, E. ^{[2
,3
]}

Drell, P. S. ^{[2
,3
]}

Drlica-Wagner, A. ^{[2
,3
]}

Dubois, R. ^{[2
,3
]}

Enoto, T. ^{[2
,3
]}

Favuzzi, C. ^{[16
,17
,18
]}

机构：

[1] Deutsch Elektronen Synchrotron DESY, D-15738 Zeuthen, Germany

[2] Stanford Univ, Dept Phys, Kavli Inst Particle Astrophys & Cosmol, WW Hansen Expt Phys Lab, Stanford, CA 94305 USA

[3] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94305 USA

[4] Ist Nazl Fis Nucl, Sez Perugia, I-06123 Perugia, Italy

[5] Univ Perugia, Dipartimento Fis, I-06123 Perugia, Italy

[6] Ist Nazl Fis Nucl, Sez Pisa, I-56127 Pisa, Italy

[7] Univ Paris Diderot, CEA Saclay, CNRS, Lab AIM,CEA IRFU,Serv Astrophys, F-91191 Gif Sur Yvette, France

[8] Ist Nazl Fis Nucl, Sez Trieste, I-34127 Trieste, Italy

[9] Univ Trieste, Dipartimento Fis, I-34127 Trieste, Italy

[10] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy

[11] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy

[12] Univ Calif Santa Cruz, Dept Phys, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA

[13] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

[14] IRAP, CNRS, F-31028 Toulouse 4, France

[15] Univ Toulouse, IRAP, UPS OMP, GAHEC, Toulouse, France

[16] Univ Bari, Dipartimento Fis M Merlin, I-70126 Bari, Italy

[17] Politecn Bari, I-70126 Bari, Italy

[18] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy

[19] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[20] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[21] Inst Ciencies Espai IEEE CSIC, Barcelona 08193, Spain

[22] INAF Ist Astrofis Spaziale & Fis Cosm, I-20133 Milan, Italy

[23] ASI, Sci Data Ctr, I-00044 Rome, Italy

[24] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[25] CRESST, Greenbelt, MD 20771 USA

[26] Univ Maryland Baltimore Cty, Dept Phys, Baltimore, MD 21250 USA

[27] Univ Maryland Baltimore Cty, Ctr Space Sci & Technol, Baltimore, MD 21250 USA

[28] Artep Inc, Ellicott City, MD 21042 USA

[29] Natl Acad Sci, Washington, DC 20001 USA

[30] Univ Montpellier 2, CNRS, IN2P3, Lab Univers & Particules Montpellier, Montpellier, France

[31] Stockholm Univ, Dept Phys, AlbaNova, SE-10691 Stockholm, Sweden

[32] AlbaNova, Oskar Klein Ctr Cosmoparticle Phys, SE-10691 Stockholm, Sweden

[33] Univ Udine, Dipartimento Fis, I-33100 Udine, Italy

[34] Ist Nazl Fis Nucl, Sez Trieste, Grp Collegato Udine, I-33100 Udine, Italy

[35] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[36] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[37] IUSS, I-27100 Pavia, Italy

[38] USN, Res Lab, Div Space Sci, Washington, DC 20375 USA

[39] Hiroshima Univ, Dept Phys Sci, Hiroshima 7398526, Japan

[40] INAF Ist Radioastron, I-40129 Bologna, Italy

[41] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[42] Heidelberg Univ, Landessternwarte, D-69117 Heidelberg, Germany

[43] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[44] Univ Alabama, CSPAR, Huntsville, AL 35899 USA

[45] Kyoto Univ, Grad Sch Sci, Dept Astron, Kyoto 6068502, Japan

[46] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England

[47] Univ Bordeaux 1, CNRS, IN2P3, Ctr Etud Nucl Bordeaux Gradignan, F-33175 Gradignan, France

[48] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

[49] Ibaraki Univ, Coll Sci, Mito, Ibaraki 3108512, Japan

[50] Waseda Univ, Res Inst Sci & Engn, Shinjuku Ku, Tokyo 1698555, Japan

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 753卷 / 01期

基金：

瑞典研究理事会; 美国国家航空航天局;

关键词：

catalogs; galaxies: active; gamma rays: general; methods: statistical; pulsars: general; LARGE-AREA TELESCOPE; GAMMA-RAY EMISSION; ALL-SKY SURVEY; MILLISECOND PULSARS; RADIO; DISCOVERY; EGRET; DIRECTION; SELECTION; SEARCHES;

D O I：

10.1088/0004-637X/753/1/83

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Fermi Large Area Telescope (LAT) First Source Catalog (1FGL) provided spatial, spectral, and temporal properties for a large number of gamma-ray sources using a uniform analysis method. After correlating with the most-complete catalogs of source types known to emit gamma rays, 630 of these sources are "unassociated" (i.e., have no obvious counterparts at other wavelengths). Here, we employ two statistical analyses of the primary gamma-ray characteristics for these unassociated sources in an effort to correlate their gamma-ray properties with the active galactic nucleus (AGN) and pulsar populations in 1FGL. Based on the correlation results, we classify 221 AGN-like and 134 pulsar-like sources in the 1FGL unassociated sources. The results of these source "classifications" appear to match the expected source distributions, especially at high Galactic latitudes. While useful for planning future multiwavelength follow-up observations, these analyses use limited inputs, and their predictions should not be considered equivalent to "probable source classes" for these sources. We discuss multiwavelength results and catalog cross-correlations to date, and provide new source associations for 229 Fermi-LAT sources that had no association listed in the 1FGL catalog. By validating the source classifications against these new associations, we find that the new association matches the predicted source class in similar to 80% of the sources.

引用

页数：22

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