UVOT detection of PNV J16484962-4457032

ATel #11297; Nicholas Gorgone (George Washington University)
on 14 Feb 2018; 13:49 UT
Credential Certification: Chryssa Kouveliotou (ckouveliotou@email.gwu.edu)

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N. Gorgone (George Washington University) reports on behalf of the Swift Deep Galactic Plane Survey: We observed the field containing PNV J16484962-4457032 (ATEL# 11289 (Strader et al.) as part of the Swift/XRT Deep Galactic Plane Survey (DGPS; PI: C. Kouveliotou) on Feb. 7, 2018 for 1.9 ks. In the 0.3-10 keV XRT band, we find a 3 sigma upper limit of 2.0E-02 counts/s using the XIMAGE SOSTA tool. The field is contaminated by a bright source at ~51' away, likely LMXB 4U 1642-45. Using UVOTCENTROID to analyze UVOT/UVW1 data, we located a source at: RA(J2000) = 16h 48' 49.635" and Dec(J2000) = -44d 57' 02.98" (Uncertainty of +/- 0.42" at 90% confidence, systematics dominated). This location is 0.27" from the source position reported in ATEL# 11289 (Strader et al.) and less than 1" away with errors considered. Using UVOTDETECT we estimate a source flux density of 7.1 +/- 0.1E-15 erg/s/cm^2 /angstrom (90% confidence).