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A Chandra Observation of the Diffuse Emission Centered on the Low Mass X-ray Binary 4U 1755-33 | | Shinae Q. Park
; Jon M. Miller
; Jeffrey E. McClintock
; Stephen S. Murray
; | | Date: |
30 Aug 2004 | | Journal: | Astrophys.J. 618 (2004) L45-L48 | | Subject: | astro-ph | | Affiliation: | Harvard-Smithsonian Center for Astrophysics | | Abstract: | We present an analysis of a Chandra observation of the field surrounding the low-mass X-ray binary 4U 1755-33, which has been in quiescence since 1996. In 2003, Angelini and White reported the appearance of a narrow 7 arcmin long jetlike feature centered on the position of 4U 1755-33 using the XMM-Newton telescope. Though the source and jet are not visibly apparent in our Chandra/ACIS-S image, there is a significant excess (4-6 sigma) of counts in a region that encloses the jet when compared to adjacent regions. We examined a knot of emission in the jet that was detected by XMM-Newton but not by Chandra and calculated that if the knot flux observed by XMM-Newton was concentrated in a point source, Chandra would have easily detected it; we therefore conclude that this knot of emission is diffuse. In summary, we suggest that the jetlike feature found previously in the XMM-Newton data is quite diffuse and likely a true jet, and is not due to a chance alignment of discrete point sources or point-like regions of emission associated with internal shocks. | | Source: | arXiv, astro-ph/0408556 | | Services: | Forum | Review | PDF | Favorites | |
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