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Significant Flux Increase of Blazar PKS 0405-385 Detected by ASAS-SN

ATel #12609; X. Dai (OU), K. Z. Stanek, C. S. Kochanek (OSU), B. J. Shappee (IfA-Hawaii), and ASAS-SN Collaboration
on 24 Mar 2019; 18:17 UT
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)

Subjects: Optical, Blazar

ASAS-SN multi-site telescopes detected a significant flux increase of PKS 0405-385 (RA: 04:06:59.0353 DEC: -38:26:28.042), a gamma-ray loud and flat spectrum radio source at z=1.285. The optical flux changes by a factor of 2.5 from g=16.7 on 2019-03-13 to 15.7 on 2019-03-24 during the past 10 days. During the past 200 days, the source was frequently detected at the magnitude limits of ASAS-SN telescopes ranging from g=16.2 to g=17.8. Compared to these measurements, PKS 0405-385 is brighter by a factor of 7. Multi-wavelength/messenger observations of the source are encouraged.

Full ASAS-SN g-band light curve of this source is available at this link.

We thank Las Cumbres Observatory and its staff for their continued support of ASAS-SN. ASAS-SN is funded in part by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University, NSF grant AST-1515927, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics (CCAPP) at OSU, the Chinese Academy of Sciences South America Center for Astronomy (CASSACA), and the Villum Fonden (Denmark).