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Search for Spectral Irregularities due to Photon-Axionlike-Particle Oscillations with the Fermi Large Area Telescope.

Authors :
Ajello M
Albert A
Anderson B
Baldini L
Barbiellini G
Bastieri D
Bellazzini R
Bissaldi E
Blandford RD
Bloom ED
Bonino R
Bottacini E
Bregeon J
Bruel P
Buehler R
Caliandro GA
Cameron RA
Caragiulo M
Caraveo PA
Cecchi C
Chekhtman A
Ciprini S
Cohen-Tanugi J
Conrad J
Costanza F
D'Ammando F
de Angelis A
de Palma F
Desiante R
Di Mauro M
Di Venere L
Domínguez A
Drell PS
Favuzzi C
Focke WB
Franckowiak A
Fukazawa Y
Funk S
Fusco P
Gargano F
Gasparrini D
Giglietto N
Glanzman T
Godfrey G
Guiriec S
Horan D
Jóhannesson G
Katsuragawa M
Kensei S
Kuss M
Larsson S
Latronico L
Li J
Li L
Longo F
Loparco F
Lubrano P
Madejski GM
Maldera S
Manfreda A
Mayer M
Mazziotta MN
Meyer M
Michelson PF
Mirabal N
Mizuno T
Monzani ME
Morselli A
Moskalenko IV
Murgia S
Negro M
Nuss E
Okada C
Orlando E
Ormes JF
Paneque D
Perkins JS
Pesce-Rollins M
Piron F
Pivato G
Porter TA
Rainò S
Rando R
Razzano M
Reimer A
Sánchez-Conde M
Sgrò C
Simone D
Siskind EJ
Spada F
Spandre G
Spinelli P
Takahashi H
Thayer JB
Torres DF
Tosti G
Troja E
Uchiyama Y
Wood KS
Wood M
Zaharijas G
Zimmer S
Source :
Physical review letters [Phys Rev Lett] 2016 Apr 22; Vol. 116 (16), pp. 161101. Date of Electronic Publication: 2016 Apr 20.
Publication Year :
2016

Abstract

We report on the search for spectral irregularities induced by oscillations between photons and axionlike-particles (ALPs) in the γ-ray spectrum of NGC 1275, the central galaxy of the Perseus cluster. Using 6 years of Fermi Large Area Telescope data, we find no evidence for ALPs and exclude couplings above 5×10^{-12}  GeV^{-1} for ALP masses 0.5≲m_{a}≲5  neV at 95% confidence. The limits are competitive with the sensitivity of planned laboratory experiments, and, together with other bounds, strongly constrain the possibility that ALPs can reduce the γ-ray opacity of the Universe.

Details

Language :
English
ISSN :
1079-7114
Volume :
116
Issue :
16
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
27152783
Full Text :
https://doi.org/10.1103/PhysRevLett.116.161101