Detection of Gamma-Ray Emission from the Starburst Galaxies M82 and NGC
  253 with the Large Area Telescope on Fermi

Abdo, AA; Ackermann, M; Ajello, M; Atwood, WB; Axelsson, M; Baldini, L; Ballet, J; Barbiellini, G; Bastieri, D; Bechtol, K; Bellazzini, R; Berenji, B; Bloom, ED; Bonamente, E; Borgland, AW; Bregeon, J; Brez, A; Brigida, M; Bruel, P; Burnett, TH; Caliandro, GA; Cameron, RA; Caraveo, PA; Casandjian, JM; Cavazzuti, E; Cecchi, C; Charles, E; Chekhtman, A; Cheung, CC; Chiang, J; Ciprini, S; Claus, R; CohenTanugi, J; Conrad, J; De Palma, F; Deangelis, A; Dermer, CD; Digel, SW; Do Couto E Silva, E; Drell, PS; DrlicaWagner, A; Dubois, R; Dumora, D; Farnier, C; Favuzzi, C; Fegan, SJ; Focke, WB; Foschini, L; Frailis, M; Fukazawa, Y; Funk, S; Fusco, P; Gargano, F; Gasparrini, D; Gehrels, N; Germani, S; Giebels, B; Giglietto, N; Giordano, F; Glanzman, T; Godfrey, G; Grenier, IA; Grondin, MH; Grove, JE; Guillemot, L; Guiriec, S; Hanabata, Y; Harding, AK; Hayashida, M; Hays, E; Hughes, RE; Johnson, AS; Johnson, RP; Johnson, WN; Jóhannesson, G; Kamae, T; Katagiri, H; Kataoka, J; Kawai, N; Kerr, M; Knödlseder, J; Kocian, ML; Kuss, M; Lande, J; Latronico, L; LemoineGoumard, M; Longo, F; Loparco, F; Lott, B; Lovellette, MN; Lubrano, P; Madejski, GM; Makeev, A; Mazziotta, MN; Mcconville, W; Mcenery, JE; Meurer, C; Michelson, PF; Mitthumsiri, W; Mizuno, T; Moiseev, AA; Monte, C; Monzani, ME; Morselli, A; Moskalenko, IV; Murgia, S; Nakamori, T; Nolan, PL; Norris, JP; Nuss, E; Ohsugi, T; Omodei, N; Orlando, E; Ormes, JF; Ozaki, M; Paneque, D; Panetta, JH; Parent, D; Pelassa, V; Pepe, M; PesceRollins, M; Piron, F; Porter, TA; Rainò, S; Rando, R; Razzano, M; Reimer, A; Reimer, O; Reposeur, T; Ritz, S; Rodriguez, AY; Romani, RW; Roth, M; Ryde, F; Sadrozinski, HFW; Sander, A; Saz Parkinson, PM; Scargle, JD; Sellerholm, A; Sgrò, C; Shaw, MS; Smith, DA; Smith, PD; Spandre, G; Spinelli, P; Strickman, MS; Strong, AW; Suson, DJ; Takahashi, H; Tanaka, T; Thayer, JB; Thayer, JG; Thompson, DJ; Tibaldo, L; Tibolla, O; Torres, DF; Tosti, G; Tramacere, A; Uchiyama, Y; Usher, TL; Vasileiou, V; Vilchez, N; Vitale, V; Waite, AP; Wang, P; Winer, BL; Wood, KS; Ylinen, T; Ziegler, M; Çelik, O

research

Detection of Gamma-Ray Emission from the Starburst Galaxies M82 and NGC 253 with the Large Area Telescope on Fermi

Authors: AA Abdo
M Ackermann
M Ajello
WB Atwood
M Axelsson
L Baldini
J Ballet
G Barbiellini
D Bastieri
K Bechtol
R Bellazzini
B Berenji
ED Bloom
E Bonamente
AW Borgland
J Bregeon
A Brez
M Brigida
P Bruel
TH Burnett
GA Caliandro
RA Cameron
PA Caraveo
JM Casandjian
E Cavazzuti
C Cecchi
E Charles
A Chekhtman
CC Cheung
J Chiang
S Ciprini
R Claus
J CohenTanugi
J Conrad
F De Palma
A Deangelis
CD Dermer
SW Digel
E Do Couto E Silva
PS Drell
A DrlicaWagner
R Dubois
D Dumora
C Farnier
C Favuzzi
SJ Fegan
WB Focke
L Foschini
M Frailis
Y Fukazawa
S Funk
P Fusco
F Gargano
D Gasparrini
N Gehrels
S Germani
B Giebels
N Giglietto
F Giordano
T Glanzman
G Godfrey
IA Grenier
MH Grondin
JE Grove
L Guillemot
S Guiriec
Y Hanabata
AK Harding
M Hayashida
E Hays
RE Hughes
AS Johnson
RP Johnson
WN Johnson
G Jóhannesson
T Kamae
H Katagiri
J Kataoka
N Kawai
M Kerr
J Knödlseder
ML Kocian
M Kuss
J Lande
L Latronico
M LemoineGoumard
F Longo
F Loparco
B Lott
MN Lovellette
P Lubrano
GM Madejski
A Makeev
MN Mazziotta
W Mcconville
JE Mcenery
C Meurer
PF Michelson
W Mitthumsiri
T Mizuno
AA Moiseev
C Monte
ME Monzani
A Morselli
IV Moskalenko
S Murgia
T Nakamori
PL Nolan
JP Norris
E Nuss
T Ohsugi
N Omodei
E Orlando
JF Ormes
M Ozaki
D Paneque
JH Panetta
D Parent
V Pelassa
M Pepe
M PesceRollins
F Piron
TA Porter
S Rainò
R Rando
M Razzano
A Reimer
O Reimer
T Reposeur
S Ritz
AY Rodriguez
RW Romani
M Roth
F Ryde
HFW Sadrozinski
A Sander
PM Saz Parkinson
JD Scargle
A Sellerholm
C Sgrò
MS Shaw
DA Smith
PD Smith
G Spandre
P Spinelli
MS Strickman
AW Strong
DJ Suson
H Takahashi
T Tanaka
JB Thayer
JG Thayer
DJ Thompson
L Tibaldo
O Tibolla
DF Torres
G Tosti
A Tramacere
Y Uchiyama
TL Usher
V Vasileiou
N Vilchez
V Vitale
AP Waite
P Wang
BL Winer
KS Wood
T Ylinen
M Ziegler
O Çelik
Publication date: 27 November 2009
Publisher: 'IOP Publishing'
Doi

Abstract

We report the detection of high-energy gamma-ray emission from two starburst galaxies using data obtained with the Large Area Telescope on board the Fermi Gamma-ray Space Telescope. Steady point-like emission above 200 MeV has been detected at significance levels of 6.8 sigma and 4.8 sigma respectively, from sources positionally coincident with locations of the starburst galaxies M82 and NGC 253. The total fluxes of the sources are consistent with gamma-ray emission originating from the interaction of cosmic rays with local interstellar gas and radiation fields and constitute evidence for a link between massive star formation and gamma-ray emission in star-forming galaxies.Comment: Submitted to ApJ Letter