2006A&A...449L..31G


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET01:59:55

2006A&A...449L..31G - Astronomy and Astrophysics, volume 449, L31-34 (2006/4-2)

Magnetars as persistent hard X-ray sources: INTEGRAL discovery of a hard tail in SGR 1900+14.

GOETZ D., MEREGHETTI S., TIENGO A. and ESPOSITO P.

Abstract (from CDS):

Using 2.5 Ms of data obtained by the INTEGRAL satellite in 2003-2004, we discovered persistent hard X-ray emission from the soft gamma-ray repeater SGR 1900+14. Its 20-100keV spectrum is well described by a steep power law with photon index Γ=3.1±0.5 and flux 1.5x10–11erg/cm2/s. Contrary to SGR 1806-20, the only other soft gamma-ray repeater for which persistent emission above 20keV was reported, SGR 1900+14 has been detected in the hard X-ray range while it was in a quiescent state (the last bursts from this source were observed in 2002). By comparing the broad band spectra (1-100keV) of all the magnetars detected by INTEGRAL (the two SGRs and three anomalous X-ray pulsars) we find evidence for a different spectral behaviour of these two classes of sources.

Abstract Copyright:

Journal keyword(s): gamma-rays: observations - pulsars: individual: SGR 1900+14 - pulsars: general

CDS comments: Fig.1 AX J1910.7+917 is a misprint for AX J1910.7+0917

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 516 0
2 PSR J1708-4008 Psr 17 08 49.0 -40 09 10           ~ 267 0
3 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1129 2
4 PSR J1841-0456 Psr 18 41 19.29 -04 56 11.4           ~ 238 1
5 4C -04.71 Rad 18 41 19.8 -04 56 06           ~ 303 3
6 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 796 0
7 [KRL2007b] 353 HXB 19 08 53.080 +09 23 04.84     15.80     ~ 87 0
8 4U 1907+09 HXB 19 09 37.9 +09 49 49   19.41 16.35 14.40 12.53 O8.5Iab 309 1
9 2E 4200 HXB 19 10 43.551 +09 16 29.83           B 21 0
10 INTEGRAL1 111 HXB 19 14 04.2269997048 +09 52 58.398334234   18.6 16.4     B0.5I 89 0

    Equat.    Gal    SGal    Ecl

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2021.01.24-01:59:55

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