ASTRON is responsible for the operations of the Westerbork Synthesis Radio Telescope (WSRT) and the Low Frequency Array (LOFAR).


The astronomical research at ASTRON is closely aligned with the strengths of our facilities LOFAR and WSRT-APERTIF.


Met onze radiotelescopen nemen wij de meest zwakke signalen uit het heelal waar. Daardoor zijn zij kwetsbaar voor elektromagnetische storing. Met het tijdig treffen van de juiste maatregelen kan storing worden voorkomen.

News & Events

Read all our latest news here.

Making discoveries
in radio astronomy

ASTRON is the Netherlands Institute for Radio Astronomy, and is part of the Institutes organisation of NWO.
Inheemse blik op de hemel in Leiden tentoongesteld

Op zaterdag 16 oktober opent de bijzondere tentoonstelling Onder onze hemel (origineel Shared Sky), een culturele blik op de sterrenhemel door Aboriginal Australische en Zuid-Afrikaanse artiesten, in de Oude Sterrewacht in Leiden.

Aurorae discovered on distant stars suggest hidden planets

Using the world’s most powerful radio telescope, LOFAR, scientists have discovered stars unexpectedly blasting out radio waves, possibly indicating the existence of hidden planets.

Periodic Fast Radio Burst found bare, unobscured by strong binary wind

By connecting two of the biggest radio telescopes in the world, astronomers have discovered that a simple binary wind cannot cause the puzzling periodicity of a Fast Radio Burst after all.

Most detailed-ever images of galaxies revealed using LOFAR

After almost a decade of work, an international team of astronomers has published the most detailed images yet seen of galaxies beyond our own, revealing their inner workings in unprecedented detail.

Vidi grant awarded to astronomer Harish Vedantham
What does the start of construction of SKA mean for the project and the Netherlands?
Green light given for construction of world’s largest radio telescope arrays
Apertif survey wraps up at end of 2021
The galaxy with a wagging tail
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Radio studies of strongly-magnetized accreting neutron stars

© Image submitted by speaker as part of their work.

ASTRON/JIVE Colloquium by Jakob Van den Eijnden (University of Oxford)

X-ray binaries, wherein a star orbits in a close orbit around a compact object, are the testbed for a wide range of topics, from accretion theory and general relativity to binary evolution and neutron star physics. These systems routinely launch jets from their inner accretion flow, as observed in the radio band.

Because X-ray binaries evolve on short time scales, are numerous, and close-by, they offer a unique probe to understand the launch of these jets. However, a large subset of X-ray binaries have so far not been explored for this purpose: the roughly half of X-ray binaries hosting a strongly-magnetized (B>1e12 G) neutron star as its accretor.

Where these X-ray binaries long remained too radio faint to study, new sensitive radio telescopes have now brought them into view. I will review here our renewed efforts to study jets launched by such strongly-magnetized neutron stars, highlighting the particular challenges caused by their faintness and their massive donor stars, and discussing the implications on jet launching models


Latest tweets

Companies and institutions on a local, regional and national level benefit from ASTRON's presence, while ASTRON benefits from the local industry. In this way, radio astronomy and @ProvDrenthe are fairly intertwined.

#icdrachten #ikbendrentsondernemer #NOM #IBDO #YnBusiness

An exciting step forward in the discovery of exoplanets! @LOFAR has discovered aurorae on distant stars, suggesting hidden planets! Article by @AstroJoeC et al. published in @NatureAstronomy today

An exciting step forward in the discovery of exoplanets! #LOFAR has discovered aurorae on distant stars, suggesting hidden planets! Article by @AstroJoeC et al. published in @NatureAstronomy today

Daily Image of the Week: Flying the rainbow flag for Diversity Day (October 5) & Coming Out Day (today).