Neutral atomic-carbon quasar absorption-line systems atz> 1.5
نویسندگان
چکیده
منابع مشابه
Is X-ray Absorption from Quasar Absorption Line Systems Detectable?
Using the known properties and statistics of intervening quasar absorption systems, we calculate the cumulative absorption out to high redshifts at soft X-ray (E < 1 keV) energies. Although photoelectric absorption in quasar absorption systems provides a signiicant source of opacity at the lowest X-ray energies, the imprint of this absorption is not readily observable since it is generally mask...
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A survey of quasar absorbers was conducted using the Infrared Astronomical Satellite (IRAS) database. Quasars with known intervening absorption-line systems and broad absorption line (BAL) QSOs were selected primarily from the Junkkarinen, Hewitt & Burbidge catalog (1991). Of the 570 quasars with IRAS data, 52 showed 3 or better detections in at least one band in SCANPI analysis. The origin of ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2015
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201424122