Abstract
Numerical simulations based on the δCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites.We report the results of a Large Area Telescope (LAT) search for these satellites via the γ -ray emission expected from the annihilation ofweakly interactingmassive particle (WIMP) darkmatter. Some dark matter satellites are expected to have hard γ -ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ -ray spectra consistent with WIMP annihilation through the b-b channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeVWIMP annihilating through the b-b channel.
Original language | English |
---|---|
Article number | 121 |
Journal | Astrophysical Journal |
Volume | 747 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2012 Mar 10 |
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Keywords
- dark matter
- galaxies: dwarf
- gamma rays: galaxies
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics
Cite this
Search for dark matter satellites using fermi-LAT. / Ackermann, M.; Albert, A.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Bottacini, E.; Brandt, T. J.; Bregeon, J.; Brigida, M.; Bruel, P.; Buehler, R.; Burnett, T. H.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Casandjian, J. M.; Cecchi, C.; Charles, E.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Cutini, S.; De Palma, F.; Dermer, C. D.; Digel, S. W.; Do Couto E Silva, E.; Drell, P. S.; Drlica-Wagner, A.; Essig, R.; Falletti, L.; Favuzzi, C.; Fegan, S. J.; Focke, W. B.; Fukazawa, Y.; Funk, S.; Fusco, P.; Gargano, F.; Germani, S.; Giglietto, N.; Giordano, F.; Giroletti, M.; Glanzman, T.; Godfrey, G.; Grenier, I. A.; Guiriec, S.; Gustafsson, M.; Hadasch, D.; Hayashida, M.; Hou, X.; Hughes, R. E.; Johnson, R. P.; Johnson, A. S.; Kamae, T.; Katagiri, H.; Kataoka, Jun; Knödlseder, J.; Kuss, M.; Lande, J.; Latronico, L.; Lee, S. H.; Lionetto, A. M.; Garde, M. Llena; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Mazziotta, M. N.; McEnery, J. E.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, T.; Moiseev, A. A.; Monte, C.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Naumann-Godo, M.; Norris, J. P.; Nuss, E.; Ohsugi, T.; Okumura, A.; Orlando, E.; Ormes, J. F.; Ozaki, M.; Paneque, D.; Pelassa, V.; Pierbattista, M.; Piron, F.; Pivato, G.; Porter, T. A.; Rainò, S.; Rando, R.; Razzano, M.; Reimer, A.; Reimer, O.; Ritz, S.; Sadrozinski, H. F W; Sehgal, N.; Sgrò, C.; Siskind, E. J.; Spinelli, P.; Strigari, L.; Suson, D. J.; Tajima, H.; Takahashi, H.; Tanaka, T.; Thayer, J. G.; Thayer, J. B.; Tibaldo, L.; Tinivella, M.; Torres, D. F.; Troja, E.; Uchiyama, Y.; Usher, T. L.; Vandenbroucke, J.; Vasileiou, V.; Vianello, G.; Vitale, V.; Waite, A. P.; Wang, P.; Winer, B. L.; Wood, K. S.; Yang, Z.; Zalewski, S.; Zimmer, S.
In: Astrophysical Journal, Vol. 747, No. 2, 121, 10.03.2012.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Search for dark matter satellites using fermi-LAT
AU - Ackermann, M.
AU - Albert, A.
AU - Baldini, L.
AU - Ballet, J.
AU - Barbiellini, G.
AU - Bastieri, D.
AU - Bechtol, K.
AU - Bellazzini, R.
AU - Blandford, R. D.
AU - Bloom, E. D.
AU - Bonamente, E.
AU - Borgland, A. W.
AU - Bottacini, E.
AU - Brandt, T. J.
AU - Bregeon, J.
AU - Brigida, M.
AU - Bruel, P.
AU - Buehler, R.
AU - Burnett, T. H.
AU - Caliandro, G. A.
AU - Cameron, R. A.
AU - Caraveo, P. A.
AU - Casandjian, J. M.
AU - Cecchi, C.
AU - Charles, E.
AU - Chiang, J.
AU - Ciprini, S.
AU - Claus, R.
AU - Cohen-Tanugi, J.
AU - Conrad, J.
AU - Cutini, S.
AU - De Palma, F.
AU - Dermer, C. D.
AU - Digel, S. W.
AU - Do Couto E Silva, E.
AU - Drell, P. S.
AU - Drlica-Wagner, A.
AU - Essig, R.
AU - Falletti, L.
AU - Favuzzi, C.
AU - Fegan, S. J.
AU - Focke, W. B.
AU - Fukazawa, Y.
AU - Funk, S.
AU - Fusco, P.
AU - Gargano, F.
AU - Germani, S.
AU - Giglietto, N.
AU - Giordano, F.
AU - Giroletti, M.
AU - Glanzman, T.
AU - Godfrey, G.
AU - Grenier, I. A.
AU - Guiriec, S.
AU - Gustafsson, M.
AU - Hadasch, D.
AU - Hayashida, M.
AU - Hou, X.
AU - Hughes, R. E.
AU - Johnson, R. P.
AU - Johnson, A. S.
AU - Kamae, T.
AU - Katagiri, H.
AU - Kataoka, Jun
AU - Knödlseder, J.
AU - Kuss, M.
AU - Lande, J.
AU - Latronico, L.
AU - Lee, S. H.
AU - Lionetto, A. M.
AU - Garde, M. Llena
AU - Longo, F.
AU - Loparco, F.
AU - Lovellette, M. N.
AU - Lubrano, P.
AU - Mazziotta, M. N.
AU - McEnery, J. E.
AU - Michelson, P. F.
AU - Mitthumsiri, W.
AU - Mizuno, T.
AU - Moiseev, A. A.
AU - Monte, C.
AU - Monzani, M. E.
AU - Morselli, A.
AU - Moskalenko, I. V.
AU - Murgia, S.
AU - Naumann-Godo, M.
AU - Norris, J. P.
AU - Nuss, E.
AU - Ohsugi, T.
AU - Okumura, A.
AU - Orlando, E.
AU - Ormes, J. F.
AU - Ozaki, M.
AU - Paneque, D.
AU - Pelassa, V.
AU - Pierbattista, M.
AU - Piron, F.
AU - Pivato, G.
AU - Porter, T. A.
AU - Rainò, S.
AU - Rando, R.
AU - Razzano, M.
AU - Reimer, A.
AU - Reimer, O.
AU - Ritz, S.
AU - Sadrozinski, H. F W
AU - Sehgal, N.
AU - Sgrò, C.
AU - Siskind, E. J.
AU - Spinelli, P.
AU - Strigari, L.
AU - Suson, D. J.
AU - Tajima, H.
AU - Takahashi, H.
AU - Tanaka, T.
AU - Thayer, J. G.
AU - Thayer, J. B.
AU - Tibaldo, L.
AU - Tinivella, M.
AU - Torres, D. F.
AU - Troja, E.
AU - Uchiyama, Y.
AU - Usher, T. L.
AU - Vandenbroucke, J.
AU - Vasileiou, V.
AU - Vianello, G.
AU - Vitale, V.
AU - Waite, A. P.
AU - Wang, P.
AU - Winer, B. L.
AU - Wood, K. S.
AU - Yang, Z.
AU - Zalewski, S.
AU - Zimmer, S.
PY - 2012/3/10
Y1 - 2012/3/10
N2 - Numerical simulations based on the δCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites.We report the results of a Large Area Telescope (LAT) search for these satellites via the γ -ray emission expected from the annihilation ofweakly interactingmassive particle (WIMP) darkmatter. Some dark matter satellites are expected to have hard γ -ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ -ray spectra consistent with WIMP annihilation through the b-b channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeVWIMP annihilating through the b-b channel.
AB - Numerical simulations based on the δCDM model of cosmology predict a large number of as yet unobserved Galactic dark matter satellites.We report the results of a Large Area Telescope (LAT) search for these satellites via the γ -ray emission expected from the annihilation ofweakly interactingmassive particle (WIMP) darkmatter. Some dark matter satellites are expected to have hard γ -ray spectra, finite angular extents, and a lack of counterparts at other wavelengths. We sought to identify LAT sources with these characteristics, focusing on γ -ray spectra consistent with WIMP annihilation through the b-b channel. We found no viable dark matter satellite candidates using one year of data, and we present a framework for interpreting this result in the context of numerical simulations to constrain the velocity-averaged annihilation cross section for a conventional 100 GeVWIMP annihilating through the b-b channel.
KW - dark matter
KW - galaxies: dwarf
KW - gamma rays: galaxies
UR - http://www.scopus.com/inward/record.url?scp=84859741048&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859741048&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/747/2/121
DO - 10.1088/0004-637X/747/2/121
M3 - Article
AN - SCOPUS:84859741048
VL - 747
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 121
ER -