KVN SOURCE-FREQUENCY PHASE-REFERENCING OBSERVATION OF 3C 66A AND 3C 66B
نویسندگان
چکیده
منابع مشابه
A TeV source in the 3C 66A/B region
The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2 hr in 2007 August–December. The observations resulted in the discovery of a γ-ray source centered at celestial coordinates R.A. = 22312 and decl.= 430.7 (MAGIC J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the excess with the blazar 3C 66A is discussed. The energy spectrum o...
متن کاملModeling the Spectral Energy Distribution and Variability of 3c 66a during the Webt Campaign of 2003y2004
The BL Lac object 3C 66Awas observed in an extensive multiwavelength monitoring campaign (the Whole Earth Blazar Telescope [WEBT] campaign) from2003 July until 2004April. The spectral energy distribution (SED)wasmeasured over the entire electromagnetic spectrum, with flux measurements from radio to X-ray frequencies and upper limits in the very high energy (VHE) -ray regime. Here we use a time-...
متن کاملVeritas Observations of a Very High Energy Γ -ray Flare from the Blazar 3c 66a
The intermediate-frequency peaked BL Lacertae (IBL) object 3C 66A is detected during 2007–2008 in VHE (very high energy; E > 100 GeV) γ rays with the VERITAS stereoscopic array of imaging atmospheric Cherenkov telescopes. An excess of 1791 events is detected, corresponding to a significance of 21.2 standard deviations (σ ), in these observations (32.8 hr live time). The observed integral flux a...
متن کاملObservations of the Blazar 3c 66a with the Magic Telescopes in Stereoscopic Mode
We report new observations of the intermediate-frequency peaked BL Lacertae object 3C 66A with the MAGIC telescopes. The data sample we use were taken in 2009 December and 2010 January, and comprises 2.3 hr of good quality data in stereoscopic mode. In this period, we find a significant signal from the direction of the blazar 3C 66A. The new MAGIC stereoscopic system is shown to play an essenti...
متن کاملOrbital motion in the radio galaxy 3C 66B: evidence for a supermassive black hole binary.
Supermassive black hole binaries may exist in the centers of active galactic nuclei such as quasars and radio galaxies, and mergers between galaxies may result in the formation of supermassive binaries during the course of galactic evolution. Using the very-long-baseline interferometer, we imaged the radio galaxy 3C 66B at radio frequencies and found that the unresolved radio core of 3C 66B sho...
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ژورنال
عنوان ژورنال: Publications of The Korean Astronomical Society
سال: 2015
ISSN: 1225-1534
DOI: 10.5303/pkas.2015.30.2.629