SIMBAD references

2013ApJ...773..122P - Astrophys. J., 773, 122 (2013/August-3)

The optical counterpart to the X-ray transient IGR J1824-24525 in the globular cluster M28.

PALLANCA C., DALESSANDRO E., FERRARO F.R., LANZONI B. and BECCARI G.

Abstract (from CDS):

We report on the identification of the optical counterpart to the recently detected INTEGRAL transient IGR J1824-24525 in the Galactic globular cluster M28. From analysis of a multi-epoch Hubble Space Telescope data set, we have identified a strongly variable star positionally coincident with the radio and Chandra X-ray sources associated with the INTEGRAL transient. The star has been detected during both a quiescent and an outburst state. In the former case it appears as a faint, unperturbed main-sequence star, while in the latter state it is about two magnitudes brighter and slightly bluer than main-sequence stars. We also detected Hα excess during the outburst state, suggestive of active accretion processes by the neutron star.

Abstract Copyright:

Journal keyword(s): binaries: close - globular clusters: individual: M28 - stars: neutron - X-rays: individual: IGR J18245-2452

Simbad objects: 7

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2022.10.07-21:52:35

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