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A Spectral Study of a New Class of Radio QuasarsThis document serves as a final technical report for NASA grants NAG5-9995 and NAG5-9533, entitled 'A Spectral Study of a New Class of Radio Quasars.' The purpose of these grants were to support observations made using the BeppoSAX satellite. The observations took place over two years and covered two SAX observing cycles, respectively AO-3 and AO-4. During this time, I was employed both at Johns Hopkins University (NAG5-9995) and the University of Maryland, Baltimore County (NAG5-9533). As the research on these grants was on the same subject and my employment at JHU and UMBC has been consecutive, this document therefore covers both grants. The targets for these observations were four radio-loud quasars chosen from the first two X-ray selected samples of such objects. These were the brightest examples of the newly found class of X-ray loud flat-spectrum radio quasars, which prior to 1997, had never been seen before. However, my previous work with collaborators Paolo Padovani and Paolo Giommi on the DXRBS survey showed that they make up about 25% of the population of flat-spectrum radio quasars, but had not been seen before because of selection biases (all previous samples of these objects had been compiled in the radio). The purpose of the SAX observations was to investigate the shape of their X-ray spectrum, which would tell us where the peak of their synchrotron emission was located.
Document ID
20030020812
Acquisition Source
Headquarters
Document Type
Other
Authors
Perlman, Eric S.
(Johns Hopkins Univ. Baltimore, MD, United States)
Date Acquired
August 21, 2013
Publication Date
April 1, 2003
Subject Category
Astronomy
Funding Number(s)
CONTRACT_GRANT: NAG5-9533
CONTRACT_GRANT: NAG5-9995
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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