2022ApJ...927..139O

Query : 2022ApJ...927..139O

2022ApJ...927..139O - Astrophys. J., 927, 139-139 (2022/March-2)

Identification of an X-Ray Pulsar in the BeXRB System IGR J18219-1347.

O'CONNOR B., GOGUS E., HUPPENKOTHEN D., KOUVELIOTOU C., GORGONE N., TOWNSEND L.J., CALAMIDA A., FRUCHTER A., BUCKLEY D.A.H., BARING M.G., KENNEA J.A., YOUNES G., ARZOUMANIAN Z., BELLM E., CENKO S.B., GENDREAU K., GRANOT J., HAILEY C., HARRISON F., HARTMANN D., KAPER L., KUTYREV A., SLANE P.O., STERN D., TROJA E., VAN DER HORST A.J., WIJERS R.A.M.J. and WOUDT P.

Abstract (from CDS):

We report on observations of the candidate Be/X-ray binary (BeXRB) IGR J18219-1347 with the Swift/X-ray Telescope, the Nuclear Spectroscopic Telescope ARray, and the Neutron Star Interior Composition Explorer during Type-I outbursts in 2020 March and June. Our timing analysis revealed the spin period of a neutron star with Pspin = 52.46 s. This periodicity, combined with the known orbital period of 72.4 days, indicates that the system is a BeXRB. Furthermore, by comparing the spectral energy distribution of the infrared counterpart to that of known BeXRBs, we confirm this classification and set a distance of approximately 10-15 kpc for the source. The broadband X-ray spectrum (1.5-50 keV) of the source is described by an absorbed power law with a photon index Γ ∼ 0.5 and a cutoff energy at ∼13 keV.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): X-ray astronomy - High mass x-ray binary stars - Pulsars - Neutron stars

Simbad objects: 7

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Number of rows : 7
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 V* V850 Cen HXB 13 01 17.0968941216 -61 36 06.637549788   15.6 14.40     B2Vne 361 0
2 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
3 V* NP Ser LXB 18 16 01.7 -14 02 09   18.8       K 683 2
4 IGR J18219-1347 HXB 18 21 54.82 -13 47 26.7           ~ 22 0
5 V* V2246 Cyg HXB 20 32 15.2749858128 +37 38 14.843024844   22.16 19.41 17.32 15.18 B0Ve 480 0
6 V* V490 Cep HXB 21 39 30.6903047304 +56 59 10.421969280   15.407 14.441 14.119   B1-B2Ve 186 0
7 NAME Sct-Cen PoG ~ ~           ~ 286 0

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