News

We are hiring!

We are hiring at JIVE! Three positions available: Support Scientist (postdoc), Near-field VLBI Scientist (postdoc), and Science Communications Officer. Applications must be received by March 1st 2021.

EVN/JIVE Newsletter #58 (January 2021)

The January 2021 issue of the EVN/JIVE Newsletter is available!

Call for Proposals to the European VLBI Network (deadline February 1st 2021)

Observing proposals are invited for the European VLBI Network (EVN), open to all astronomers. Deadline is Feb 1st 2021, 16h UTC. Astronomers with limited or no VLBI experience are particularly encouraged to apply for observing time.

2021 Royal Astronomical Society Group Achievement Award presented to EHT

The Event Horizon Telescope (EHT) collaboration is excited for having been granted by the Royal Astronomical Society (RAS) with the 2021 Group Achievement Award (A). The EHT is a global network of synchronised radio observatories that work in unison to observe radio sources associated with black holes. In April 2019, the EHT team showed the world the first image of the shadow cast by the black hole in M87, made possible by the enormous baselines which give the EHT its exquisite angular resolution.

ORP: A new European network combining optical and radio astronomy research infrastructures

The European astronomy community has been granted 15 M€ to improve how radio and optical telescopes across the continent work together. The OPTICON-RadioNet PILOT (ORP) brings experts from the ground-based astronomy community to support improved access to a wider range of facilities, enabling the fastest-growing type of astronomy – including as many wavelengths as possible in a single study – and in doing so hopefully yield more discoveries. Astronomers from 15 European countries, Australia and South Africa and 37 institutions have joined the ORP consortium, funded by the EU H2020 programme.

JIVE celebrates the National Diversity Day

October 6th celebrates National Diversity Day (NDD) in the Netherlands, a day to work on improving diversity in all its aspects, including sexual preferences, gender identity, origin, religion, physical disabilities, a distance to the labor market, and more.

Wobbling Shadow of the M87* Black Hole

In 2019, the Event Horizon Telescope (EHT) Collaboration delivered the first image of a black hole, revealing M87*-the supermassive object in the center of the M87 galaxy. The EHT team, including researchers from JIVE, has now used the lessons learned last year to analyze the archival data sets from 2009-2013, some of them not published before. The analysis reveals the behavior of the black hole image across multiple years, indicating persistence of the crescent-like shadow feature, but also variation of its orientation-the crescent appears to be wobbling. The full results appeared today in The Astrophysical Journal.

Huib van Langevelde new director Event Horizon Telescope

Huib van Langevelde (of JIVE, Dwingeloo, also Professor of Galactic Radio Astronomy at Leiden) has been selected as the new director of the Event Horizon Telescope (EHT). The EHT is a collaboration involving about 350 scientists from 18 countries.

EVN e-Seminars series

The sharpest view of the radio Universe: VLBI – Connecting Astronomers Worldwide. A new series of online seminars with 7 speakers covering 7 different science topics, every ~7 weeks. The first EVN e-seminar will take place on Wednesday 8 July 2020, 10:30 CEST. Cristiana Spingola (Univ. Bologna & IRA-INAF) will talk about “Using Strong Gravitational Lensing to Zoom in on High-Redshift Galaxies”.

Array of radio telescopes reveals explosion on the surface of a hot dead star

An international group of researchers observed a source of variable gamma rays identified in 2010 by the NASA satellite Fermi. They used a technique called VLBI, that combines data from several radio telescopes on Earth, to produce the sharpest images. Surprisingly, the source of gamma rays was a symbiotic nova, a peculiar stellar system known to astronomers as V407 Cyg. These stellar systems were not known to emit very high energy radiation, therefore with the observations in 2010, Fermi identified the first member of a new class of objects.The astronomers now released the results of their VLBI campaign carried out during the spectacular outburst that produced the gamma rays. The images, compiled using the radio waves detected by telescopes in Europe and in the US, are the most detailed to date. They reveal the aftermath of a powerful cosmic explosion due to the interaction of two stars on close orbit.
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