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A Keplerian disk with a four-arm spiral birthing an episodically accreting high-mass protostar

Submitted by evlbi_beheer on Wed, 09/13/2023 - 09:16

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.

Astronomers from the Universitat de València show the first detailed image of a radiation belt outside our solar system

Submitted by evlbi_beheer on Mon, 08/21/2023 - 11:51

brown dwarf
Artistic impression of the brown dwarf LSR J1835+3259 (central object). Magnetic field,  radiation belt, and auroras are visible. Image credits: Illustration by Hugo Salais / Metazoa Studio.

News from ORP

Submitted by evlbi_beheer on Tue, 05/09/2023 - 19:46

The Opticon RadioNet Pilot (ORP) is one of the European Commission's "pilot" programs under the EC H2020, launched in March 2021. This four-year project brings together 37 institutions to support and develop seamless access to radio and optical facilities.

Independent VLBI astrometric results to validate the Gaia results for AR Sco, the only known radio-pulsing white dwarf

Submitted by evlbi_beheer on Tue, 05/09/2023 - 19:26
The VLBI images of the WD pulsar AR Sco.

VLBI astrometric observations of radio stars can validate the quality of Gaia Celestial Reference Frame (GCRF) and help to improve the accuracy and robustness of the link between the In

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