Global solution of VLBI observations and assessments
نویسندگان
چکیده
منابع مشابه
Global 8.4-GHz VLBI observations of JVAS B0218+357
In this paper we present new observations of the gravitational lens system JVAS B0218+357 made with a global VLBI network at a frequency of 8.4 GHz. Our maps have an rms noise of 30 μJy beam and with these we have been able to image much of the extended structure of the radio jet in both the A and B images at high resolution (∼1 mas). The main use of these maps will be to enable us to further c...
متن کاملGlobal VLBI Observations of Compact Radio Sources in M82
Observations of the starburst galaxy, M82, have been made with a 20-station global VLBI array at λ18cm. Maps are presented of the brightest young supernova remnants (SNR) in M82 and the wide-field mapping techniques used in making images over a field of view of ∼1 arcminute with 3 milliarcsecond resolution are discussed. A limit has been placed on the power law deceleration of the young SNR, 43...
متن کاملVlbi Observations of Sn 2008d
We report on two epochs of VLBI observations of the Type Ib/c supernova SN 2008D, which was associated with the X-ray outburst XRF 080109, At our first epoch, at t = 30 days after the explosion, we observed at 22 and 8.4 GHz, and at our second, at t = 133 days, at 8.4 and 5.0 GHz. The VLBI observations allow us to accurately measure the source’s size and position at each epoch, and thus constra...
متن کامل23 Ghz Vlbi Observations of Sn 2008ax 23 Ghz Vlbi Observations of Sn 2008ax (research Note)
We report on phase-referenced 23 GHz Very-Long-Baseline-Interferometry (VLBI) observations of the type IIb supernova SN 2008ax, made with the Very Long Baseline Array (VLBA) on 2 April 2008 (33 days after explosion). These observations resulted in a marginal detection of the supernova. The total flux density recovered from our VLBI image is 0.8±0.3 mJy (one standard deviation). As it appears, t...
متن کاملGround Based Vlbi Facilities – the European and Global Vlbi Network
For a comprehensive guide to the various array characteristics, corresponding correlator capabilities, range of diverse observing modes, different proposal submission procedures, user support etc., I refer the reader to the on-line web pages highlighted above. In this paper I have chosen to focus on a sub-set of these facilities, in particular the European VLBI Network (EVN) both in stand-alone...
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ژورنال
عنوان ژورنال: Earth, Planets and Space
سال: 2000
ISSN: 1880-5981
DOI: 10.1186/bf03352273