An updated list of AGILE bright γ-ray sources and their variability in pointing mode

被引：14

作者：

Verrecchia, F. ^{[1
,2
]}

Pittori, C. ^{[1
,2
]}

Chen, A. W. ^{[3
]}

Bulgarelli, A. ^{[4
]}

Tavani, M. ^{[5
,6
,7
,8
]}

Lucarelli, F. ^{[1
,2
]}

Giommi, P. ^{[1
,9
]}

Vercellone, S. ^{[11
]}

Pellizzoni, A. ^{[10
]}

Giuliani, A. ^{[3
]}

Longo, F. ^{[12
,13
]}

Barbiellini, G. ^{[8
,12
,13
]}

Trifoglio, M. ^{[4
]}

Gianotti, F. ^{[4
]}

Argan, A. ^{[5
]}

Antonelli, L. A. ^{[1
,2
]}

Caraveo, P. ^{[3
]}

Cardillo, M. ^{[5
,6
]}

Cattaneo, P. W. ^{[14
]}

Cocco, V. ^{[6
]}

Colafrancesco, S. ^{[2
,23
]}

Contessi, T. ^{[3
]}

Costa, E. ^{[5
]}

Del Monte, E. ^{[5
]}

De Paris, G. ^{[5
]}

Di Cocco, G. ^{[4
]}

Di Persio, G. ^{[5
]}

Donnarumma, I. ^{[5
]}

Evangelista, Y. ^{[5
]}

Fanari, G. ^{[1
]}

Feroci, M. ^{[5
]}

Ferrari, A. ^{[8
,15
]}

Fiorini, M. ^{[3
]}

Fornari, F. ^{[3
]}

Fuschino, F. ^{[4
]}

Froysland, T. ^{[6
,8
]}

Frutti, M. ^{[5
]}

Galli, M. ^{[16
]}

Labanti, C. ^{[4
]}

Lapshov, I. ^{[5
]}

Lazzarotto, F. ^{[5
]}

Liello, F. ^{[5
]}

Lipari, P. ^{[17
,18
]}

Mattaini, E. ^{[2
]}

Marisaldi, M. ^{[4
]}

Mastropietro, M. ^{[5
,20
]}

Mauri, A. ^{[4
]}

Mauri, F. ^{[14
]}

Mereghetti, S. ^{[2
]}

Morelli, E. ^{[4
]}

机构：

[1] ASI Sci Data Ctr ASDC, I-00133 Rome, Italy

[2] Osserv Astron Roma, INAF, I-00040 Monte Porzio Catone, Italy

[3] INAF IASF Milano, I-20133 Milan, Italy

[4] INAF IASF Bologna, I-40129 Bologna, Italy

[5] INAF IAPS, I-00133 Rome, Italy

[6] Univ Roma Tor Vergata, Dip Fis, I-00133 Rome, Italy

[7] INFN Roma Tor Vergata, I-00133 Rome, Italy

[8] CIFS, I-10133 Turin, Italy

[9] Agenzia Spaziale Italiana, I-00198 Rome, Italy

[10] Osservatorio Astron Cagliari, INAF, I-09012 Capoterra, CA, Italy

[11] INAF IASF Palermo, I-90146 Palermo, Italy

[12] Univ Trieste, Dip Fis, I-34127 Trieste, Italy

[13] INFN Trieste, I-34012 Trieste, Italy

[14] Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[15] Univ Turin, Dip Fis, I-10126 Turin, Italy

[16] ENEA Bologna, I-40128 Bologna, Italy

[17] INFN Roma 1, I-00185 Rome, Italy

[18] Univ Roma La Sapienza, Dip Fis, I-00185 Rome, Italy

[19] ENEA Frascati, I-00044 Frascati, RM, Italy

[20] CNR, IMIP, Area Ric Montelibretti, RM, Italy

[21] Univ Insubria, Dip Fis, I-22100 Como, Italy

[22] ASTRON, NL-7990 AA Dwingeloo, Netherlands

[23] Univ Witwatersrand, ZA-2000 Johannesburg, South Africa

来源：

ASTRONOMY & ASTROPHYSICS | 2013年 / 558卷

关键词：

catalogs; gamma rays: galaxies; gamma rays: general; LARGE-AREA TELESCOPE; SILICON TRACKER; SPACE MISSION; CRAB-NEBULA; CATALOG; EMISSION; EGRET; CALIBRATION; DETECTOR; SATELLITE;

D O I：

10.1051/0004-6361/201321452

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Aims. We present a variability study of a sample of bright gamma-ray (30 Mev-50 Gev) sources. This sample is an extension of the first AGILE catalogue of gamma-ray sources (1AGL), obtained using the complete set of AGILE observations in pointing mode performed during a 2.3 year period from July 9, 2007 until October 30, 2009. Methods. The dataset of AGILE pointed observations covers a long time interval and its gamma-ray data archive is useful for monitoring studies of medium-to-high brightness gamma-ray sources. In the analysis reported here, we used data obtained with an improved event filter that covers a wider field of view, on a much larger (about 27.5 months) dataset, integrating data on observation block time scales, which mostly range from a few days to thirty days. Results. The data processing resulted in a better characterized source list than 1AGL was, and includes 54 sources, 7 of which are new high galactic latitude (vertical bar BII vertical bar >= 5) sources, 8 are new sources on the galactic plane, and 20 sources from the previous catalogue with revised positions. Eight 1AGL sources (2 high-latitude and 6 on the galactic plane) were not detected in the final processing either because of low OB exposure and/or due to their position in complex galactic regions. We report the results in a catalogue of all the detections obtained in each single OB, including the variability results for each of these sources. In particular, we found that 12 sources out of 42 or 11 out of 53 are variable, depending on the variability index used, where 42 and 53 are the number of sources for which these indices could be calculated. Seven of the 11 variable sources are blazars, the others are Crab pulsar+nebula, LS I + 61 degrees 303, Cyg X-3, and 1AGLR J2021+4030.

引用

页数：12

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