Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stsc.reptq....u&link_type=abstract
Final Report, Oct. 1991 - Feb. 1994 Space Telescope Science Inst., Baltimore, MD.
Astronomy and Astrophysics
Astrophysics
Astrophysics, Bl Lacertae Objects, Brightness Distribution, Emission Spectra, X Ray Astronomy, X Ray Sources, X Ray Spectra, Quasars, Rosat Mission, Signal To Noise Ratios
Scientific paper
This is the final report to the National Aeronautics and Space Administration (NASA) concerning NASA grant NAG5-1671. This grant was awarded to Dr. C. Megan Urry of the Space Telescope Science Institute in response to a proposal, entitled 'Hot Absorbers and the X-Ray Spectra of BL Lac Objects.' The grant was originally awarded in October 1991 and expired in February 1994. The purpose of this project was to detect spectral features in high signal-to-noise Rosat PSPC spectra of X-ray-bright BL Lac objects. We were granted observations of three targets: PKS2155-304, Mrk421, and Mrk501. All three were bright and yielded 5,000-30,000 photons in the good PSPC data.
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