2012A&A...546A..30M


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.10CET11:29:29

2012A&A...546A..30M - Astronomy and Astrophysics, volume 546A, 30-30 (2012/10-1)

The magnetar candidate AX J1818.8-1559.

MEREGHETTI S., ESPOSITO P., TIENGO A., GOETZ D., ISRAEL G.L. and DE LUCA A.

Abstract (from CDS):

In October 2007, a hard X-ray burst was detected by the INTEGRAL satellite from a direction consistent with the position of AXJ1818.8-1559, an X-ray source at low Galactic latitude discovered with the Advanced Satellite for Cosmology and Astrophysics (ASCA) satellite in 1996-1999. The short duration (0.8s) and soft spectrum (power-law photon index of 3.0±0.2) of the burst in the 20-100keV range are typical of soft gamma-ray repeaters and anomalous X-ray pulsars. We report on the results of an observation of AXJ1818.8-1559 obtained with the Suzaku satellite in October 2011. The source spectrum, a power-law with photon index ∼1.5, and flux (∼2x10–12erg/cm2/s, 2-10keV) did not show significant variations from those derived from archival data of various satellites obtained from 1993 to 2011. We discuss possible interpretations of the data for AXJ1818.8-1559 and, based on its association with the INTEGRAL burst, we propose it as a new member of the small class of magnetar candidates.

Abstract Copyright:

Journal keyword(s): X-rays: bursts - stars: neutron - stars: magnetars - X-rays: individual: AX J1818.8-1559

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 501 0
2 NAME Sgr J0418+5729 gam 04 18 33.867 +57 32 22.91           ~ 178 0
3 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 372 0
4 PSR J1550-5418 Psr 15 50 54.18 -54 18 23.9           ~ 317 1
5 GRB 980618A gB 16 35 52 -47 35.2           ~ 235 0
6 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11082 0
7 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1072 2
8 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 346 0
9 GRB 071017 gB 18 18 51.40 -15 59 21.1           ~ 10 0
10 AX J1818.8-1559 X 18 18 53 -15 59.5           ~ 13 0
11 NAME Sgr 1833-0832 gam 18 33 46.0 -08 32 13           ~ 66 0
12 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 769 0
13 NAME Galactic Bulge reg ~ ~           ~ 3261 0

    Equat.    Gal    SGal    Ecl

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2019.12.10-11:29:29

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