[vsnet-alert 10826] QSO B0133+47 IR brightening and potential gamma-ray detection (ATEL)

[Taichi Kato]

   QSO B0133+47 IR brightening and potential gamma-ray detection.

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http://www.astronomerstelegram.org/?read=1874 

Infrared flaring of the potential gamma-ray source QSO B0133+47 

ATel #1874; A. Carrami on 12 Dec 2008; 17:44 UT 

Password Certification: Alberto Carrami 

Subjects: Infra-Red, Gamma Ray, AGN, Quasars Referred to by ATel #: 
1877 

We call attention on our recent observations of QSO B0133+47 with the 
Cananea NIR camera (CANICA) on the 2.1m telescope at the Observatorio 
Astrof to show fluxes 2.5 magnitudes brighter than 2MASS values, of 
epoch 1999, but undergoing a rapid decline: 

H = 12.356 ¡Þ 0.01 at JD 2454788.761732 H = 12.440 ¡Þ 0.03 at JD 
2454790.816569 H = 12.769 ¡Þ 0.02 at JD 2454794.642166 

QSO B0133+47 is positionally coincident with the bright mm source 
WMAP 80 (Bennett et al. 2003) and the VHE photon 1379 (Thompson, 
Bertsch, O'Neal Jr. 2005) and we consider it of high interest for 
space borne gamma-ray observatories. We encourage multiwavelength 
monitoring of this object. 

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http://www.astronomerstelegram.org/?read=1877 

Fermi LAT detection of a gamma-ray source positionally consistent 
with QSO B0133+47 

ATel #1877; H. Takahashi (Hiroshima University), G. Tosti 
(INFN/University Perugia) on behalf of the Fermi Large Area Telescope 
Collaboration on 16 Dec 2008; 23:57 UT 

Password Certification: Hiromitsu Takahashi 
(hirotaka at hep01.hepl.hiroshima-u.ac.jp) 

Subjects: Gamma Ray, >GeV, AGN, Quasars 

The Large Area Telescope (LAT), one of two instruments on the Fermi 
Gamma-ray Space Telescope (formerly GLAST, launched June 11, 2008), 
has detected one gamma-ray source positionally consistent with QSO 
B0133+47 reported in ATEL #1874. Preliminary analysis indicates that 
the source has been regularly detected by the LAT since the beginning 
of the all-sky scanning mode (August 2008). The LAT has not seen any 
strong variability of this source, and the average integral flux is 
about 1 x 10-7 ph cm-2 s-1 above 100 MeV with 30% systematic 
uncertainty. Because Fermi operates in the all-sky scanning mode, 
observing ~20% of the sky at any instant and all points in the sky 
every 3 hours, regular gamma-ray monitoring of this source will 
continue. 

The Fermi LAT is a pair conversion telescope designed to cover the 
energy band from 20 MeV to greater than 300 GeV. It is the product of 
an international collaboration between NASA and DOE in the U.S. and 
many scientific institutions across France, Italy, Japan and Sweden.