2022A&A...666A.148P


Query : 2022A&A...666A.148P

2022A&A...666A.148P - Astronomy and Astrophysics, volume 666A, 148 (2022/10-1)

XMM-Newton and SRG/eROSITA observations of the isolated neutron star candidate 4XMM J022141.5-735632.

PIRES A.M., MOTCH C., KURPAS J., SCHWOPE A.D., VALDES F., HABERL F., TRAULSEN I., TUBIN D., BECKER W., COMPARAT J., MAITRA C., MEISNER A., MOUSTAKAS J. and SALVATO M.

Abstract (from CDS):

We report the results of follow-up investigations of a possible new thermally emitting isolated neutron star (INS), 4XMM J022141.5-735632, using observations from XMM-Newton and Spectrum Roentgen Gamma (SRG) eROSITA. The analysis is complemented by Legacy Survey imaging in the optical and near-infrared wavelengths. The X-ray source, the first to be targeted by XMM-Newton in an effort to identify new INS candidates from the fourth generation of the XMM-Newton serendipitous source catalogue Data Release 9 (4XMM-DR9), shows a remarkably soft energy distribution and a lack of catalogued counterparts; the very high X-ray-to-optical flux ratio virtually excludes any other identification than an INS. Within current observational limits, no significant flux variation or change of spectral state is registered over nearly ten years. Future dedicated observations, particularly to search for pulsations, are crucial to shed further light on the nature of the X-ray source and relations to other Galactic neutron stars.

Abstract Copyright: © A. M. Pires et al. 2022

Journal keyword(s): catalogs - surveys - stars: neutron - pulsars: general - X-rays: individuals: 4XMM J022141.5-735632

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11178 1
2 4XMM J022141.5-735632 N* 02 21 41.542 -73 56 32.02           ~ 3 0
3 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7084 0
4 NAME Magellanic Bridge HI 03 11 -77.5           ~ 449 1
5 RX J0420.0-5022 N* 04 20 02.2 -50 22 46     25.5     ~ 93 0
6 RX J0720.4-3125 N* 07 20 24.961 -31 25 50.21   26.1   27.0   ~ 303 0
7 RX J0806.4-4123 N* 08 06 23.0 -41 22 33           ~ 81 0
8 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1014 2
9 CXOGNC J104608.71-594306.4 N* 10 46 08.719 -59 43 06.48           ~ 21 0
10 RBS 1223 N* 13 08 48.7 +21 27 08   28.6 28.6     ~ 157 1
11 RBS 1556 N* 16 05 18.9 +32 49 07     26.8     ~ 101 1
12 RX J1856.6-3754 Psr 18 56 35.11 -37 54 30.5     25.7     ~ 437 0

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