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Swift/XRT observation of MGRO J2019+37

ATEL # 1097; R. Landi, L. Bassani (IASF/INAF Bologna), A. Bazzano, A. De Rosa (IASF/INAF Rome), A.J. Dean, A.J. Bird (Univ. Southampton), N. Gehrels (GSFC), J.A. Kennea (PSU) & M. Perri (ASDC)
on 5 Jun 2007; 14:51 UT
Password Certification: Raffaella Landi (landi@iasfbo.inaf.it)

Subjects: X-ray, >GeV, Request for Observations

Swift/XRT observed MGRO J2019+37 on November 8, 2006 for 5.5 ks; within the source positional uncertainty, as reported by Abdo et al. 2007 (astroph.0705.0707), we find 3 X-ray sources located at the following positions (positional uncertainty 6"):

#1: RA(J2000) = 20 20 43.4, Dec(J2000) = +36 49 27.8 (4.3 sigma)

#2: RA(J2000) = 20 20 34.7, Dec(J2000) = +36 50 57.1 (2.9 sigma)

#3: RA(J2000) = 20 19 40.8, Dec(J2000) = +36 45 02.1 (3.1 sigma)

Source #1 is associated to a faint ROSAT Survey source 1RXS J202043.4+364932, which has an optical (USNO-A2) and infrared (2MASS) counterpart.

Source #2 has no optical nor near-infrared counterpart but it is possibly associated to an MSX6C (8 micron) source; it is also 35" from the radio source NVSS J202036+365123 (25.8 mJy at 20 cm and 11" positional uncertainty).

Source #3 has an optical (USNO-B1) and 2 near-infrared (2MASS) counterparts; the far-infrared sources IRAS 20178+3635 and MSX6C G074.9762+00.2833 are located 27" and 15" away from this source.

The 2-10 keV fluxes estimated assuming a Crab-like spectrum are 1.3 x 10-13, 1.5 x 10-13 and 2.0 x 10-13 erg cm-2 s-1 for source #1, #2 and #3, respectively.

Follow-up observations at various wavelenghts of these possible counterparts to MGRO J2019+37 are highly encouraged.


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R. E. Rutledge , Editor
ATEL Mirror v1.0 Updates