Search for variable gamma-ray emission from the Galactic plane in the Fermi data

被引:7
作者
Neronov, A. [1 ]
Malyshev, D. [2 ]
Chernyakova, M. [3 ,4 ]
Lutovinov, A. [5 ]
机构
[1] ISDC Data Ctr Astrophys, CH-1290 Versoix, Switzerland
[2] Bogolyubov Inst Theoret Phys, UA-03680 Kiev, Ukraine
[3] Dublin City Univ, Sch Phys Sci, Dublin 9, Ireland
[4] DIAS, Dublin 2, Ireland
[5] Moscow Space Res Inst, Moscow 117997, Russia
关键词
gamma rays: general; methods: data analysis; surveys; LARGE-AREA TELESCOPE; SUPERNOVA REMNANT W28; CATALOG; PULSAR;
D O I
10.1051/0004-6361/201219420
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Context. High-energy gamma-ray emission from the Galactic plane above similar to 100 MeV is composed of three main contributions: diffuse emission from cosmic ray interactions in the interstellar medium, emission from extended sources, such as supernova remnants and pulsar wind nebulae, and emission from isolated compact source populations. Aims. The diffuse emission and emission from the extended sources provide the dominant contribution to the flux almost everywhere in the inner Galaxy, preventing the detection of isolated compact sources. In spite of this difficulty, compact sources in the Galactic plane can be singled out based on the variability properties of their gamma-ray emission. Our aim is to find sources in the Fermi data that show long-term variability. Methods. We performed a systematic study of the emission variability from the Galactic plane, by constructing the variability maps. Results. We find that emission from several directions along the Galactic plane is significantly variable on a time scale of months. These directions include, in addition to known variable Galactic sources and background blazars, the Galactic ridge region at positive Galactic longitudes and several regions containing young pulsars. We argue that variability on the time scale of months may be common to pulsars, originating from the inner parts of pulsar wind nebulae, similarly to what is observed in the Crab pulsar.
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页数:4
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  • [1] Gamma-Ray Flares from the Crab Nebula
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Allafort, A.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bouvier, A.
    Brandt, T. J.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Cannon, A.
    Caraveo, P. A.
    Casandjian, J. M.
    Celik, O.
    Charles, E.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Costamante, L.
    Cutini, S.
    D'Ammando, F.
    Dermer, C. D.
    de Angelis, A.
    de Luca, A.
    de Palma, F.
    Digel, S. W.
    do Couto e Silva, E.
    Drell, P. S.
    Drlica-Wagner, A.
    Dubois, R.
    Dumora, D.
    Favuzzi, C.
    [J]. SCIENCE, 2011, 331 (6018) : 739 - 742
  • [2] FERMI LARGE AREA TELESCOPE OBSERVATION OF A GAMMA-RAY SOURCE AT THE POSITION OF ETA CARINAE
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Allafort, A.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bonamente, E.
    Borgland, A. W.
    Bouvier, A.
    Brandt, T. J.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Burnett, T. H.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Carrigan, S.
    Casandjian, J. M.
    Cecchi, C.
    Celik, Oe
    Chaty, S.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Cominsky, L. R.
    Conrad, J.
    Dermer, C. D.
    de Palma, F.
    Digel, S. W.
    do Couto e Silva, E.
    Drell, P. S.
    Dubois, R.
    Dumora, D.
    Favuzzi, C.
    Fegan, S. J.
    Ferrara, E. C.
    Frailis, M.
    Fukazawa, Y.
    [J]. ASTROPHYSICAL JOURNAL, 2010, 723 (01) : 649 - 657
  • [3] Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Atwood, W. B.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bouvier, A.
    Brandt, T. J.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Burnett, T. H.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Carrigan, S.
    Casandjian, J. M.
    Cecchi, C.
    Celik, O.
    Charles, E.
    Chaty, S.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, J.
    Corbel, S.
    Corbet, R.
    DeCesar, M. E.
    den Hartog, P. R.
    Dermer, C. D.
    de Palma, F.
    Digel, S. W.
    Donato, D.
    do Couto e Silva, E.
    Drell, P. S.
    [J]. SCIENCE, 2010, 329 (5993) : 817 - 821
  • [4] FERMI LARGE AREA TELESCOPE OBSERVATIONS OF THE SUPERNOVA REMNANT W28 (G6.4-0.1)
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Allafort, A.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bouvier, A.
    Brandt, T. J.
    Bregeon, J.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Carrigan, S.
    Casandjian, J. M.
    Cecchi, C.
    Celik, Oe.
    Chekhtman, A.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, J.
    Dermer, C. D.
    de Palma, F.
    do Couto e Silva, E.
    Drell, P. S.
    Dubois, R.
    Dumora, D.
    Farnier, C.
    Favuzzi, C.
    Fegan, S. J.
    Fukazawa, Y.
    Fukui, Y.
    Funk, S.
    Fusco, P.
    Gargano, F.
    Gehrels, N.
    [J]. ASTROPHYSICAL JOURNAL, 2010, 718 (01) : 348 - 356
  • [5] Fermi Large Area Telescope Measurements of the Diffuse Gamma-Ray Emission at Intermediate Galactic Latitudes
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Anderson, B.
    Atwood, W. B.
    Axelsson, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Baughman, B. M.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bregeon, J.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Burnett, T. H.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Casandjian, J. M.
    Cecchi, C.
    Charles, E.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, J.
    Dereli, H.
    Dermer, C. D.
    de Angelis, A.
    de Palma, F.
    Digel, S. W.
    Di Bernardo, G.
    Dormody, M.
    do Couto e Silva, E.
    Drell, P. S.
    Dubois, R.
    Dumora, D.
    Edmonds, Y.
    Farnier, C.
    Favuzzi, C.
    [J]. PHYSICAL REVIEW LETTERS, 2009, 103 (25)
  • [6] Modulated High-Energy Gamma-Ray Emission from the Microquasar Cygnus X-3
    Abdo, A. A.
    Ackermann, M.
    Ajello, M.
    Axelsson, M.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Baughman, B. M.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Brez, A.
    Brigida, M.
    Bruel, P.
    Burnett, T. H.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Casandjian, J. M.
    Cecchi, C.
    Celik, Oe
    Chaty, S.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Cominsky, L. R.
    Conrad, J.
    Corbel, S.
    Corbet, R.
    Dermer, C. D.
    de Palma, F.
    Digel, S. W.
    do Couto e Silva, E.
    Drell, P. S.
    Dubois, R.
    Dubus, G.
    Dumora, D.
    Farnier, C.
    Favuzzi, C.
    Fegan, S. J.
    Focke, W. B.
    Fortin, P.
    [J]. SCIENCE, 2009, 326 (5959) : 1512 - 1516
  • [7] Periodic Emission from the Gamma-Ray Binary 1FGL J1018.6-5856
    Ackermann, M.
    Ajello, M.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Belfiore, A.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bregeon, J.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caraveo, P. A.
    Cavazzuti, E.
    Cecchi, C.
    Celik, Oe.
    Charles, E.
    Chaty, S.
    Chekhtman, A.
    Cheung, C. C.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Corbel, S.
    Corbet, R. H. D.
    Cutini, S.
    de Luca, A.
    den Hartog, P. R.
    de Palma, F.
    Dermer, C. D.
    Digel, S. W.
    do Couto e Silva, E.
    Donato, D.
    Drell, P. S.
    Drlica-Wagner, A.
    Dubois, R.
    Dubus, G.
    Favuzzi, C.
    Fegan, S. J.
    Ferrara, E. C.
    Focke, W. B.
    Fortin, P.
    [J]. SCIENCE, 2012, 335 (6065) : 189 - 193
  • [8] 3.9 day orbital modulation in the TeV γ-ray flux and spectrum from the X-ray binary LS 5039
    Aharonian, F.
    Akhperjanian, A. G.
    Bazer-Bachi, A. R.
    Beilicke, M.
    Benbow, W.
    Berge, D.
    Bernloehr, K.
    Boisson, C.
    Bolz, O.
    Borrel, V.
    Braun, I.
    Brown, A. M.
    Buehler, R.
    Buesching, I.
    Carrigan, S.
    Chadwick, P. M.
    Chounet, L. -M.
    Cornils, R.
    Costamante, L.
    Degrange, B.
    Dickinson, H. J.
    Djannati-Atai, A.
    Drury, L. O'C.
    Dubus, G.
    Egberts, K.
    Emmanoulopoulos, D.
    Espigat, P.
    Feinstein, F.
    Ferrero, E.
    Fiasson, A.
    Fontaine, G.
    Funk, Seb.
    Funk, S.
    Fuessling, M.
    Gallant, Y. A.
    Giebels, B.
    Glicenstein, J. F.
    Goret, P.
    Hadjichristidis, C.
    Hauser, D.
    Hauser, M.
    Heinzelmann, G.
    Henri, G.
    Hermann, G.
    Hinton, J. A.
    Hoffmann, A.
    Hofmann, W.
    Holleran, M.
    Horns, D.
    Jacholkowska, A.
    [J]. ASTRONOMY & ASTROPHYSICS, 2006, 460 (03) : 743 - 749
  • [9] Discovery of the binary pulsar PSRB1259-63 in very-high-energy gamma rays around periastron with HESS
    Aharonian, F
    Akhperjanian, AG
    Aye, KM
    Bazer-Bachi, AR
    Beilicke, M
    Benbow, W
    Berge, D
    Berghaus, P
    Bernlöhr, K
    Boisson, C
    Bolz, O
    Braun, I
    Breitling, F
    Brown, AM
    Gordo, JB
    Chadwick, PM
    Chounet, LM
    Cornils, R
    Costamante, L
    Degrange, B
    Djannati-Ataï, A
    Drury, LO
    Dubus, G
    Emmanoulopoulos, D
    Espigat, P
    Feinstein, F
    Fleury, P
    Fontaine, G
    Fuchs, Y
    Funk, S
    Gallant, YA
    Giebels, B
    Gillessen, S
    Glicenstein, JF
    Goret, P
    Hadjichristidis, C
    Hauser, M
    Heinzelmann, G
    Henri, G
    Hermann, G
    Hinton, JA
    Hofmann, W
    Holleran, M
    Horns, D
    de Jager, OC
    Johnston, S
    Khélifi, B
    Kirk, JG
    Komin, N
    Konopelko, A
    [J]. ASTRONOMY & ASTROPHYSICS, 2005, 442 (01): : 1 - 10
  • [10] Very high energy gamma-ray radiation from the stellar mass black hole binary Cygnus X-1
    Albert, J.
    Aliu, E.
    Anderhub, H.
    Antoranz, P.
    Armada, A.
    Baixeras, C.
    Barrio, J. A.
    Bartko, H.
    Bastieri, D.
    Becker, J. K.
    Bednarek, W.
    Berger, K.
    Bigongiari, C.
    Biland, A.
    Bock, R. K.
    Bordas, P.
    Bosch-Ramon, V.
    Bretz, T.
    Britvitch, I.
    Camara, M.
    Carmona, E.
    Chilingarian, A.
    Coarasa, J. A.
    Commichau, S.
    Contreras, J. L.
    Cortina, J.
    Costado, M. T.
    Curtef, V.
    Danielyan, V.
    Dazzi, F.
    De Angelis, A.
    Delgado, C.
    de los Reyes, R.
    De Lotto, B.
    Domingo-SantamariA, E.
    Dorner, D.
    Doro, M.
    Errando, M.
    Fagiolini, M.
    Ferenc, D.
    Fernandez, E.
    Firpo, R.
    Flix, J.
    Fonseca, M. V.
    Font, L.
    Fuchs, M.
    Galante, N.
    Garcia-Lopez, R. J.
    Garczarczyk, M.
    Gaug, M.
    [J]. ASTROPHYSICAL JOURNAL, 2007, 665 (01) : L51 - L54