Optical Flaring in Two Blazars Detected by CRTS

Details Optical Flaring in Two Blazars Detected by CRTS Optical Flaring in Two Blazars Detected by CRTS

Aug 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atel.2145....1d&link_type=abstract

The Astronomer's Telegram, #2145

Astronomy and Astrophysics

Astronomy

Optical, Agn, Quasars

Scientific paper

We report optical flaring of two blazars, detected by the CRTS, on 31 July 2009 UT: CSS090731:143854+371035 = CGRaBS/CRATES J143853+371026 has been observed at ~ 17.4 mag by CRTS. The source has brightened by ~ 1 mag over the past 2 months, and by ~ 2 mag since the end of January. SDSS gives the magnitudes u = 22.7, g = 21.4, r = 21.5, i = 21.4 and z = 21.2. Follow-up observations at the Palomar 60-inch telescope give magnitudes: g = 17.7, r = 17.3, i = 17.0, and z = 16.5, uncertain by ~ 0.1 mag, on 01 Aug 2009 UT; and g = 17.9, r = 17.4, i = 17.2, and z = 16.55, uncertain by ~ 0.1 mag, on 02 Aug 2009 UT, i.e, ~ 4 mag brighter than the SDSS values.

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