Home

IGRJ17361-4441: a possible new accreting X-ray binary in NGC6388 (Bozzo et al.)

Details: Published on 18 October 2011

Vol. 535
In section 1. Letters

IGRJ17361-4441: a possible new accreting X-ray binary in NGC6388

by B. Bozzo, C. Ferrigno, J. Stevens, T. Belloni, J. Rodriguez, P. den Hartog, A. Papitto, I. Kreykenbohm, F. Fontani, and L. Gibaud, A&A 534, L1

This hard transient XR source, discovered on 11 Aug. 2011 near the center of the globular cluster NGC 6388 with INTEGRAL, had previously been considered a candidate for an intermediate-mass central black hole (IMBH). Using Swift, INTEGRAL, RXTE, and the Australia Telescope Compact Array (ATCA), the authors present upper limits for any centimeter radio emission and no indication of periodic pulsed or coherent emission. Chandra observations pinpoint the location. The upper limit to the mass of any possible BH, <600 M_sun, is below the limit for an IMBH, and the properties are more consistent with a LMXRB hosting a neutron star accreter.