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Orientation dependency of broad-line widths in quasars and consequences for black-hole mass estimation

Abstract:

In this paper we report new evidence that measurements of the broad-line widths in quasars are dependent on the source orientation, consistent with the idea that the broad-line region is flattened or disc-like. This reinforces the view derived from radio-selected samples, where the radio-core dominance has been used as a measure of orientation. The results presented here show a highly significant (>99.95%) correlation between radio spectral index (which we use as a proxy for source orienta...

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Journal:
Monthly Notices of the Royal Astronomical Society More from this journal
Volume:
369
Issue:
1
Pages:
182-188
Publication date:
2006-03-09
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Keywords:
Pubs id:
pubs:353471
UUID:
uuid:d23e4c0f-35ba-4ee0-bd76-758706aee4ba
Local pid:
pubs:353471
Source identifiers:
353471
Deposit date:
2013-11-16

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