RELATIONSHIP BETWEEN X-RAY AND ULTRAVIOLET EMISSION IN 3C-273

Authors
PALTANI S COURVOISIER TJL TURLER M WALTER R
Citation
S. Paltani et al., RELATIONSHIP BETWEEN X-RAY AND ULTRAVIOLET EMISSION IN 3C-273, Nuclear physics. B, Proceedings supplement, 69(1-3), 1999, pp. 445-448
Citations number
8
Categorie Soggetti
Physics, Particles & Fields
Journal title
Nuclear physics. B, Proceedings supplement → ACNP
ISSN journal
09205632
Volume
69
Issue
1-3
Year of publication
1999
Pages
445 - 448
Database
ISI
SICI code
0920-5632(1999)69:1-3<445:RBXAUE>2.0.ZU;2-T
Abstract
In 3C 273, ultraviolet flux and X-ray flux measured by BATSE are not w ell correlated, contrarily to predictions of several models, unless th e X-ray flux lags the UV emission by 1.75 yr. The absence of observed correlation at small lag cannot be due to spectral variability. A Comp tonizing corona model is however compatible with all UV and X-ray obse rvations covering the BATSE period.