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

Ajello, M. ; Albert, A. ; Anderson, B. ; Baldini, L. ; Barbiellini, G. ; Bastieri, D. ; Bellazzini, R. ; Bissaldi, E. ; Blandford, R.D. ; Mirabal, N. ; Guiriec, S. ; Perkins, J. S. ; Troja, E.

Physical review letters, 2016-04, Vol.116 (16), p.161101-161101, Article 161101 [Periódico revisado por pares]

Goddard Space Flight Center: American Physical Society

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Título:
Search for Spectral Irregularities due to Photon-Axionlike-Particle Oscillations with the Fermi Large Area Telescope
Autor: Ajello, M. ; Albert, A. ; Anderson, B. ; Baldini, L. ; Barbiellini, G. ; Bastieri, D. ; Bellazzini, R. ; Bissaldi, E. ; Blandford, R.D. ; Mirabal, N. ; Guiriec, S. ; Perkins, J. S. ; Troja, E.
Assuntos: Alps ; ASTRONOMY AND ASTROPHYSICS ; Astrophysics ; Couplings ; Galaxies ; Gamma ray spectra ; Gamma rays ; High Energy Physics - Phenomenology ; Irregularities ; Laboratory experiments ; Large area telescopes ; Oscillations ; Particle oscillations ; Photons ; Physics ; Searching ; Spectra ; Telescopes ; Ultraviolet spectroscopy
É parte de: Physical review letters, 2016-04, Vol.116 (16), p.161101-161101, Article 161101
Notas: GSFC
GSFC-E-DAA-TN41799
Goddard Space Flight Center
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
National Aeronautics and Space Administration (NASA)
USDOE
AC02-76SF00515; FIRB-2012-RBFR12PM1F
Ministry of Education, University and Research (MIUR) (Italy)
Descrição: We report on the search for spectral irregularities induced by oscillations between photons and axion-like particles (ALPs) in the gamma-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 times 10 (sup -12) per gigaelectronvolt for ALP masses less than or approximately equal to 0.5 apparent magnitude (m (sub a)) less than or approximately equal to 5 nanoelectronvolts at 95 percent confidence. The limits are competitive withthe sensitivity of planned laboratory experiments, and, together with other bounds, strongly constrain thepossibility that ALPs can reduce the gamma-ray opacity of the Universe.
Editor: Goddard Space Flight Center: American Physical Society
Idioma: Inglês

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

Ajello, M. ; Albert, A. ; Anderson, B. ; Baldini, L. ; Barbiellini, G. ; Bastieri, D. ; Bellazzini, R. ; Bissaldi, E. ; Blandford, R.D. ; Mirabal, N. ; Guiriec, S. ; Perkins, J. S. ; Troja, E.

Goddard Space Flight Center: American Physical Society

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