Physics
Scientific paper
Mar 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003xmm..prop..220l&link_type=abstract
XMM-Newton Proposal ID #02040901
Physics
Rx J0439.7-45, Xmm-Newton Proposal 02040901
Scientific paper
Narrow-line Seyfert 1 galaxies, identified by common optical emission-line properties, show dispersion among both their UV emission-line properties and their X-ray spectral and variability properties. However, we have tentatively identified an empirical relationship between the UV and X-ray properties that may reflect the influence of a range of L/M among NLS1s. To test this conjecture, we propose a 30ks XMM-Newton observation of RX J0439-45, a luminous X-ray extreme NLS1 that we will also observe using HST.
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