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.

Discovery of a fast radio burst that pulses at regular intervals

A Canadian-led team of astronomers, including researchers from JIVE, has discovered that a repeating fast radio burst (FRB) originating from a nearby galaxy pulses at regular intervals. Researchers within the Canadian Hydrogen Intensity Mapping Experiment (CHIME) Fast Radio Burst Collaboration used the CHIME telescope in British Columbia to show that the repeating radio source known as FRB 180916.J0158+65 - first discovered in 2018 by the same group - pulsates apparently every 16.35 days.

JIVE recognises and protects diversity as the key against discrimination

JIVE is an international research infrastructure committed to recognise and protect Diversity as the key against Discrimination.

Edition 56 of EVN Newsletter now available!

The 56th edition of the EVN newsletter is now available! Click here to read about science, technical and network highlights and check the newest call for proposals for the EVN!

Something is Lurking in the Heart of Quasar 3C 279

Event Horizon Telescope Images of a Black-Hole Powered Jet

Corona virus and JIVE operations

Following the recommendations of the Dutch authorities, the ASTRON premises in Dwingeloo, which host JIVE, are closed until at least 20 May.
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