Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope

Abstract

Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10(-26) cm(3) s(-1) at 5 GeV to about 5 x 10(-23) cm(3) s(-1) at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section (similar to 3 x 10(-26) cm(3) s(-1) for a purely s-wave cross section), without assuming additional boost factors.


Tutti gli autori

  • Ackermann M , Ajello M , Albert A , Atwood WB , Baldini L , Ballet J , Barbiellini G , Bastieri D , Bechtol K , Bellazzini R , Berenji B , Blandford RD , Bloom ED , Bonamente E , Borgland AW , Bregeon J , Brigida M , Bruel P , Buehler R , Burnett TH , Buson S , Caliandro GA , Cameron RA , Canadas B , Caraveo PA , Casandjian JM , Cecchi C , Charles E , Chekhtman A , Chiang J , Ciprini S , Claus R , Cohen-Tanugi J , Conrad J , Cutini S , de Angelis A , de Palma F , Dermer CD , Digel SW , Silva EDE , Drell PS , Drlica-Wagner A , Falletti L , Favuzzi C , Fegan SJ , Ferrara EC , Fukazawa Y , Funk S , Fusco P , Gargano F , Gasparrini D , Gehrels N , Germani S , Giglietto N , Giordano F , Giroletti M , Glanzman T , Godfrey G , Grenier IA , Guiriec S , Gustafsson M , Hadasch D , Hayashida M , Hays E , Hughes RE , Jeltema TE , Johannesson G , Johnson RP , Johnson AS , Kamae T , Katagiri H , Kataoka J , Knodlseder J , Kuss M , Lande J , Latronico L , Lionetto AM , Garde ML , Longo F , Loparco F , Lott B , Lovellette MN , Lubrano P , Madejski GM , Mazziotta MN , McEnery JE , Mehault J , Michelson PF , Mitthumsiri W , Mizuno T , Monte C , Monzani ME , Morselli A , Moskalenko IV , Murgia S , Naumann-Godo M , Norris JP , Nuss E , Ohsugi T , Okumura A , Omodei N , Orlando E , Ormes JF , Ozaki M , Paneque D , Parent D , Pesce-Rollins M , Pierbattista M , Piron F , Pivato G , Porter TA , Profumo S , Raino S , Razzano M , Reimer A , Reimer O , Ritz S , Roth M , Sadrozinski HFW , Sbarra C , Scargle JD , Schalk TL , Sgro C , Siskind EJ , Spandre G , Spinelli P , Strigari L , Suson DJ , Tajima H , Takahashi H , Tanaka T , Thayer JG , Thayer JB , Thompson DJ , Tibaldo L , Tinivella M , Torres DF , Troja E , Uchiyama Y , Vandenbroucke J , Vasileiou V , Vianello G , Vitale V , Waite AP , Wang P , Winer BL , Wood KS , Wood M , Yang Z , Zimmer S , Kaplinghat M , Martinez GD

Titolo volume/Rivista

PHYSICAL REVIEW LETTERS


Anno di pubblicazione

2011

ISSN

0031-9007

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile


Numero di citazioni Scopus

361

Ultimo Aggiornamento Citazioni

2017-04-22 03:20:59


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile