2003/02/17 by L. Angelini, N. E. White · 45 citations
Engineering · Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Black hole (networking) #Galaxy #Jet (fluid) #Luminosity #Mechanics and Biomechanics Studies #Neutron star #Physics #Pulsars and Gravitational Waves Research #X-ray binary #astro-ph
paper · pdf · doi:10.1086/374682
published in The Astrophysical Journal 586(1), L71-L75 (IOP Publishing) · Accepted for publication in ApJ Letters
arxiv created 2003/02/17 · openalex publication_date 2003/03/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report an XMM-Newton observation of the low-mass X-ray binary and black hole candidate 4U 1755-33. This source had been a bright persistent source for at least 25 yr, but in 1995 it entered an extended quiescent phase. 4U 1755-33 was not detected with an upper limit to the 2-10 keV luminosity of 3.6 × 10 31 d ergs s -1 (where d 4 kpc is the distance in units of 4 kpc)—consistent with the luminosity of other black hole candidates in a quiescent state. An unexpected result is the discovery of a narrow 7' long X-ray jetlike feature centered on the position of 4U 1755-33. The spectrum of the jet is similar to that observed from other galactic and extragalactic jets thought to be associated with accreting black holes. The detection of a fossil jet provides additional evidence supporting the black hole candidacy of 4U 1755-33. The spectral properties of three bright serendipitous sources in the field are reported, and it is suggested that these are background active galactic nuclei.