2017ApJ...847..101B

Query : 2017ApJ...847..101B

2017ApJ...847..101B - Astrophys. J., 847, 101-101 (2017/October-1)

Constraints on axion-like particles from X-ray observations of NGC1275.

BERG M., CONLON J.P., DAY F., JENNINGS N., KRIPPENDORF S., POWELL A.J. and RUMMEL M.

Abstract (from CDS):

Axion-like particles (ALPs) can induce localized oscillatory modulations in the spectra of photon sources passing through astrophysical magnetic fields. Ultra-deep Chandra observations of the Perseus cluster contain over 5×105 counts from the active galactic nucleus (AGN) of the central cluster galaxy NGC1275 and represent a data set of extraordinary quality for ALP searches. We use this data set to search for X-ray spectral irregularities from the AGN. The absence of irregularities at the O (30 % ) level allows us to place leading constraints on the ALP-photon mixing parameter g_aγγ_ 1.4–4.0×10–12 GeV–1 for ma 10–12 eV, depending on assumptions on the magnetic field realization along the line of sight.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): elementary particles - X-rays: galaxies: clusters - X-rays: individual: NGC1275 - X-rays: individual: NGC1275

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACO 426 ClG 03 19 47.6 +41 30 54           ~ 2508 1
2 NGC 1275 Bla 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4243 3
3 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
4 MCG-02-24-007 LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1077 1
5 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
6 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1

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