EVN/JIVE Newsletter - Edition 66 September 2023
Welcome to the September 2023 issue of the EVN/JIVE Newsletter.
The EVN Consortium Directors met during the VLBI40 Conference in Bologna in May. The Bologna conference was a fantastic demonstration of the demand for, interest in and science output from VLBI and the EVN in particular.
News from RADIOBLOCKS
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VLBI fringes demonstrated with phased-up MeerKAT
by: Marcel Gouws (SARAO, South Africa) and Marjolein Verkouter (JIVE, The Netherlands)
MeerKAT is an SKA precursor telescope consisting of 64 dishes distributed across 8 kilometers within the Northern Cape region of South Africa. MeerKAT has accumulated an impressive scientific output since its inauguration in 2018, and adding the capability to operate it as a VLBI station has remained a long-standing goal.
The rest of the story for the OH MM Emission in Arp 220
Willem Baan, J.N.H.S. Aditya, Tao An, Hans-Rainer Kloeckner
An Interferometric SETI Observation of Kepler-111b
Kelvin Wandia
Double SSA spectrum and magnetic field strength of the FSRQ 3C 454.3
Hyeon-Woo Jeong, Sang-Sung Lee, Whee Yeon Cheong, Jae-Young Kim, Jee Won Lee, Sincheol Kang, Sang-Hyun Kim, B. Rani, Jongho Park, and Mark. A. Gurwell
The Radio Parallax of the Crab Pulsar: A First VLBI Measurement Calibrated with Giant Pulses
REBECCA LIN, MARTEN H. VAN KERKWIJK, FRANZ KIRSTEN, UE-LI PEN, AND ADAM T. DELLER
A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar
Methanol masers at 6.7 GHz have been frequently targeted by VLBI users for their bright emission and multiple uses in radio astronomy. In addition to their uses in trigonometric annual parallax measurements, it is their reliable and exclusive association with intermediate- and high-mass protostars which make them a favourite maser transition among star formation astronomers investigating the higher mass regimes. VLBI images of the 6.7 GHz methanol maser often show rings of up to 100s of AU around protostars, or arcs of maser clouds, or seemingly random distributions.