Telescopes

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

Astronomy

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

Research and Innovation


Radio astronomy delivers important breakthrough technology for our society.

News & Events


Read all our latest news here.

Making discoveries
in radio astronomy
happen.

ASTRON is the Netherlands Institute for Radio Astronomy, and is part of the Institutes organisation of NWO.
STORIES
A starry sky made of more than 25,000 supermassive black holes

An international team of astronomers has produced the largest and sharpest map of the sky at ultra-low radio frequencies, using the Low Frequency Array (LOFAR) radio telescope. The map published in the journal Astronomy & Astrophysics reveals more than 25,000 active supermassive black holes in distant galaxies.

People of Astron: Paula Fusiara

In People of ASTRON we share stories about the people at ASTRON. Who are the people behind the discoveries and innovations and also, who are the people that make sure that everything runs smoothly? Design engineer Paula Fusiara has been working at ASTRON since 2016.

SKAO is born - Launch of international Observatory signals new era for radio astronomy

The SKA Observatory, a new intergovernmental organisation dedicated to radio astronomy, was launched today following the first meeting of the Observatory’s Council.

People of ASTRON: Henk Vonk

In Humans of ASTRON we share stories about the people at ASTRON. Henk Vonk has been working at ASTRON since 2017. He is a facilities employee.

People of ASTRON: Pieter Benthem
ASTRON reveals life cycle of supermassive black hole
Humans of ASTRON: Carin Lubbers-Leering
Humans of ASTRON: Lesley Goudbeek
Humans of ASTRON: Harish Vedantham
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DAILY IMAGE
Colloquium: High-resolution study with interstellar lenses

© CC-BY-SA-NC credit: Dongzi Li

Radio waves propagating in space are often scattered into multiple paths by the ionized interstellar medium. It has long been realized that the scattering screens could be used as “interstellar lenses” to study the source and the interstellar plasma.

Compared to the telescopes on Earth, interstellar lenses could be of much larger sizes, ranging from solar radius to AUs, which could result in high angular resolution and sensitivity. Moreover, the interstellar lenses sometimes have the advantage of placement. For example, for sources with a close companion, the interstellar lenses formed in the companion wind could be only a few solar radii away from the source -- the proximity provides better resolution than studying the Sun with telescopes on Earth.

Despite the great advantages of the interstellar lenses, the uncertainty on the lensing structures restricts applications to extremely simple sources, such as the point-like, coherent sources: pulsars, and potentially FRBs.

In this talk, I will discuss applications of interstellar lensing. In particular, I will discuss the ability to constraining the pulsar emission region and measuring the Doppler factor of the emitting particles. I will also talk about the lenses' sensitivity to constrain the magneto-environment of the lensing material.

EVENTS

Applied RF technology course

Mon 17 May 2021 - Thu 20 May 2021

The RF course is an excellent introduction for Digital / Analog engineers who are or will be involved in the development of RF systems.

CAREERS

Latest tweets

An international team of astronomers has produced a map of the sky at ultra-low radio frequencies using LOFAR, revealing more than 25,000 active supermassive black holes in distant galaxies. http://bit.ly/3awD9Yg

An international team of astronomers has produced a map of the sky at ultra-low radio frequencies using @LOFAR, revealing more than 25,000 active supermassive black holes in distant galaxies. http://bit.ly/3awD9Yg

Happy #WomenInScience day! This is Paula Fusiara, one of our colleagues and a design engineer, whose dream it is to engineer telescopes! 📡🤩 https://youtu.be/MtKMRpVAxYg
#PeopleofAstron

A historical day for radio astronomy today! The SKA Observatory is born! We are so looking forward to this new era in radio astronomy!📡🤩📡🥳 http://bit.ly/3aqWTLC

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