Relationship between X-ray and ultraviolet emission in 3C 273
classification
🌌 astro-ph
keywords
x-rayfluxbatseemissionultravioletabsencecannotcompatible
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In 3C 273, ultraviolet flux and X-ray flux measured by BATSE are not well correlated, contrarily to predictions of several models, unless the 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 Comptonizing corona model is however compatible with all UV and X-ray observations covering the BATSE period.
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