The peculiar BH transient MAXI J1659-152: jet-only emission in quiescence?
Abstract
The BH transient, MAXIJ1659-152, started decaying towards quiescence before all X-ray observatories could no longer observe the source due to Sun constraints. However, recent Swift observations (Yang et al. 2011 ATel 3201) found the source at a flux of 2E-11 cgs. This is peculiar as all transient BHs except SwiftJ1753 decayed quickly. During the last Swift observation the source was still at that flux level and evidence for a line-like feature at 7.4 keV was found (by us). Perhaps the source is in fact in quiescence, and what we observe is X-ray emission from the jet impact region, the 7.4 keV line could then be due to blueshifted Fe emission. A similar effect has been seen in SS433 (Migliari et al. 2002). Furthermore, the source X-ray position determined by Swift is somewhat shifted wrt the best known VLBI radio emission. However, a short 1 ks Chandra observation will shed light on this.
- Publication:
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Chandra Proposal
- Pub Date:
- September 2010
- Bibcode:
- 2010cxo..prop.3256J