In this paper, we present the Fermi All-sky Variability Analysis (FAVA), a tool to systematically study the variability of the gamma-ray sky measured by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. For each direction on the sky, FAVA compares the number of gamma-rays observed in a given time window to the number of gamma-rays expected for the average emission detected from that direction. This method is used in weekly time intervals to derive a list of 215 flaring gamma-ray sources. We proceed to discuss the 27 sources found at Galactic latitudes smaller than 10 degrees and show that, despite their low latitudes, most of them are likely of extragalactic origin.
THE FERMI ALL-SKY VARIABILITY ANALYSIS: A LIST OF FLARING GAMMA-RAY SOURCES AND THE SEARCH FOR TRANSIENTS IN OUR GALAXY / Ackermann M; Ajello M; Albert A; Allafort A; Antolini E; Baldini L; Ballet J; Barbiellini G; Bastieri D; Bechtol K; Bellazzini R; Blandford RD; Bloom ED; Bonamente E; Bottacini E; Bouvier A; Brandt TJ; Bregeon J; Brigida M; Bruel P; Buehler R; Buson S; Caliandro GA; Cameron RA; Caraveo PA; Cavazzuti E; Cecchi C; Charles E; Chekhtman A; Cheung CC; Chiang J; Chiaro G; Ciprini S; Claus R; Cohen-Tanugi J; Conrad J; Cutini S; Dalton M; DAmmando F; de Angelis A; de Palma F; Dermer CD; Di Venere L; Drell PS; Drlica-Wagner A; Favuzzi C; Fegan SJ; Ferrara EC; Focke WB; Franckowiak A; Fukazawa Y; Funk S; Fusco P; Gargano F; Gasparrini D; Germani S; Giglietto N; Giordano F; Giroletti M; Glanzman T; Godfrey G; Grenier IA; Grondin MH; Grove JE; Guiriec S; Hadasch D; Hanabata Y; Harding AK; Hayashida M; Hays E; Hewitt J; Hill AB; Horan D; Hou X; Hughes RE; Inoue Y; Jackson MS; Jogler T; Johannesson G; Johnson WN; Kamae T; Kataoka J; Kawano T; Knoedlseder J; Kuss M; Lande J; Larsson S; Latronico L; Lemoine-Goumard M; Longo F; Loparco F; Lott B; Lovellette MN; Lubrano P; Mayer M; Mazziotta MN; McEnery JE; Michelson PF; Mitthumsiri W; Mizuno T; Monte C; Monzani ME; Morselli A; Moskalenko IV; Murgia S; Nemmen R; Nuss E; Ohsugi T; Okumura A; Omodei N; Orienti M; Orlando E; Ormes JF; Paneque D; Panetta JH; Perkins JS; Pesce-Rollins M; Piron F; Pivato G; Porter TA; Raino S; Rando R; Razzano M; Reimer A; Reimer O; Romoli C; Roth M; Sanchez-Conde M; Scargle JD; Schulz A; Sgro C; Siskind EJ; Spandre G; Spinelli P; Suson DJ; Takahashi H; Takeuchi Y; Thayer JG; Thayer JB; Thompson DJ; Tibaldo L; Tinivella M; Torres DF; Tosti G; Troja E; Tronconi V; Usher TL; Vandenbroucke J; Vasileiou V; Vianello G; Vitale V; Winer BL; Wood KS; Wood M; Yang Z. - In: THE ASTROPHYSICAL JOURNAL. - ISSN 0004-637X. - STAMPA. - 771:1(2013), pp. 57.57-57.68. [10.1088/0004-637X/771/1/57]
THE FERMI ALL-SKY VARIABILITY ANALYSIS: A LIST OF FLARING GAMMA-RAY SOURCES AND THE SEARCH FOR TRANSIENTS IN OUR GALAXY
D'AMMANDO, FILIPPO;
2013
Abstract
In this paper, we present the Fermi All-sky Variability Analysis (FAVA), a tool to systematically study the variability of the gamma-ray sky measured by the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. For each direction on the sky, FAVA compares the number of gamma-rays observed in a given time window to the number of gamma-rays expected for the average emission detected from that direction. This method is used in weekly time intervals to derive a list of 215 flaring gamma-ray sources. We proceed to discuss the 27 sources found at Galactic latitudes smaller than 10 degrees and show that, despite their low latitudes, most of them are likely of extragalactic origin.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
