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The Firm Redshift Lower Limit of the Most Distant TeV-Detected Blazar PKS 1424+240
A. Furniss, D. A. Williams, C. Danforth +7
We present the redshift lower limit of z>0.6035 for the very-high-energy (VHE; E>100 GeV) emitting blazar PKS 1424+240 (PG 1424+240). This limit is inferred from Lyman beta and gam…
A Fast Flare and Direct Redshift Constraint in Far-UV Spectra of the Blazar S50716+714
Charles W. Danforth, Krzysztof Nalewajko, Kevin France +1
The BL Lacertae object S50716+714 is one of the most studied blazars on the sky due to its active variability and brightness in many bands, including VHE gamma rays. We present her…
Ultraviolet and X-ray Variability of the Seyfert 1.5 Galaxy Markarian 817
Lisa M. Winter, Charles Danforth, Ranjan Vasudevan +9
We present an investigation of the ultraviolet and X-ray spectra of the Seyfert 1.5 galaxy Markarian 817. The ultraviolet analysis includes two recent observations taken with the C…