Variability of Quasars at 10 Microns1 G. Neugebauer and K. Matthews
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چکیده
Twenty-Ðve low-redshift quasars have been monitored for several decades at Ðve nearand midinfrared wavelengths to detect rapid variations that would indicate that a nonthermal component was present in the ““ 10 km bump.ÏÏ Such variability has apparently been detected in several radio-loud quasars and in the radio-quiet quasar PG 1535]547. In addition, the structure function of PG 1226]023 shows that an apparently periodic component is present in its near-infrared emission.
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تاریخ انتشار 1999