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- W2014758604 abstract "view Abstract Citations (28) References (44) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS MS 0205.7+3509: A Microlensed BL Lacertae Candidate Stocke, John T. ; Wurtz, Ronald E. ; Perlman, Eric S. Abstract In the course of an extensive, deep imaging survey of BL Lacertae objects made at the Canada-France-Hawaii 3.6 m Telescope (CFHT), the BL Lac object MS 0205.7+3509 was found to be significantly decentered (≍1) with respect to its host galaxy. In addition, this host is a spiral and, at a tentative z = 0.318, is significantly underluminous with respect to typical BL Lac object hosts. The ROSAT PSPC soft X-ray spectrum shows evidence for an absorbing column well in excess of Galactic at log NH = 21.2±0.1. Taken together, this evidence suggests but does not conclusively prove that this BL Lac object is background to the spiral through which it is viewed. But no multiple images are found at radio or optical wavelengths suggesting that the foreground galaxy has a very large core radius and/or low surface brightness. Since this makes the fourth such BL Lac object with these general characteristics, a gravitational lensing scenario which creates the observable features of a BL Lac object through microlensing of a background quasar without creating multiple images should be investigated theoretically in some detail. Publication: The Astrophysical Journal Pub Date: November 1995 DOI: 10.1086/176464 Bibcode: 1995ApJ...454...55S Keywords: COSMOLOGY: GRAVITATIONAL LENSING; GALAXIES: BL LACERTAE OBJECTS: INDIVIDUAL ALPHANUMERIC: MS 0205.7+3509 full text sources ADS | data products SIMBAD (7) NED (1) HEASARC (1)" @default.
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- W2014758604 date "1995-11-01" @default.
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- W2014758604 title "MS 0205.7+3509: A Microlensed BL Lacertae Candidate" @default.
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