3EG J2027+3429: Another blazar behind the Galactic Plane
Abstract
We report on the association of an X-ray source (WGA J2025.1+3342), serendipitously found with BeppoSAX in two separate observations, with the unidentified EGRET source 3EG J2027+3429. The source is detected from 1 keV up to about 100 keV, has a flat (Γ=0.6-1.5) spectrum and is highly variable both in intensity and shape. The data indicate marginal evidence for an iron line in the source rest frame. The overall X-ray luminosity is ∼4 ×1045 erg s-1, typiof a quasar. The X-ray source is coincident in radio wavelengths with a bright object characterized by a flat spectrum over the band 0.3-10 GHz while in the optical it is identified with a quasar at redshift 0.22. All available data indicate a SED compatible with a low frequency peaked or red blazar type object. This identification is interesting because this is the second blazar found behind the galactic plane in the direction of the Cygnus region.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 2004
- DOI:
- 10.1051/0004-6361:20031612
- arXiv:
- arXiv:astro-ph/0308473
- Bibcode:
- 2004A&A...414..839S
- Keywords:
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- X-rays: galaxies;
- X-rays: individual: 3EG J2027+3429;
- BL Lacertae objects: general;
- Astrophysics
- E-Print:
- 6 pages, 5 figures, 3 tables, accepted for publication in A&