News & Events

Humans of ASTRON: David Prinsloo

In Humans of ASTRON we share stories about the people at ASTRON. This time Dr. David Prinsloo talks about his work at ASTRON.

Humans of ASTRON: Bernard Duah Asabere

In Humans 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? This time we interview Dr. Bernard Duah Asabere, science operations & support officer at ASTRON.

First phase of DISTURB completed

S[&]T (Science [&] Technology), ASTRON (Netherlands Institute for Radio Astronomy) and KNMI (Royal Netherlands Meteorological Institute) have completed the design of DISTURB, a warning system for eruptions on the sun.

Humans of ASTRON: Ágnes Mika

In Humans 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? This time we interview Dr. Ágnes Mika, project manager at ASTRON, about her work for the radio astronomy institute. She joined ASTRON in 2013.

Humans of ASTRON: Zheng Meyer-Zhao

In Humans 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? This time, Zheng Meyer-Zhao, Science Data Centre Development Lead, shares her story. She joined ASTRON in 2018.

Apertif images yield first scientific results

The Apertif upgrade of the Westerbork Synthesis Radio Telescope (WSRT) has yielded its first scientific paper based on its images. The paper has been published in the scientific journal Astronomy & Astrophysics.

Events

Mon 17 May 2021 - Thu 20 May 2021

Applied RF technology course

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

Daily Image

EVN Symposium: Pin-pointing the positions of repeating Fast Radio Bursts

© ASTRON/JIVE

On October 19th, 2020, ASTRON/UvA PhD student Kenzie Nimmo gave an online EVN Symposium talk to an international audience of about 125 participants.

In her talk, entitled "Pin-pointing the positions of repeating Fast Radio Bursts", Kenzie explained how the European VLBI Network (EVN) can achieve the most precise FRB astrometry, and how this allows us to localise Fast Radio Bursts to the exact galactic neighbourhoods in which they originate (Marcote et al. 2017;Marcote, Nimmo et al. 2020). When coupled with high-resolution Hubble Space Telescope imaging, this provides important clues to the nature of these enigmatic sources (Bassa et al. 2017). One theory, which is gaining increasing traction, is that FRBs are produced by hyper-magnetised neutron stars (magnetars), possibly interacting with the wind of a massive star in a tight binary orbit.

Kenzie also explained how EVN single-dish baseband data can help us decipher the FRB mystery.

We recently used a subset of EVN dishes - out of session - to perform a high-cadence, multi-frequency monitoring campaign of the Milky Way magnetar SGR 1935+2154. In a campaign spanning hundreds of hours on source, we detected 2 bright radio bursts with Westerbork RT1, separated in time by only 1.4 seconds (Kirsten et al. 2020). This magnetar was recently identified as a possible FRB source within our own galaxy, because of an extremely bright (a fluence of Mega-Jansky milliseconds) radio flash detected by CHIME/FRB and STARE2 (CHIME/FRB Collaboration 2020;Bochenek et al. 2020).

Lastly, also using EVN baseband data, Kenzie identified 3-4 microsecond structures in the time profiles of an FRB source (Nimmo et al. 2020). These are by far the shortest-duration FRB features seen to date, and this strongly constrains how large the emission region can be. It argues most naturally for models in which the bursts are created relatively close to a neutron star - as opposed to further out in a relativistic shock.

Latest tweets

Daily image of the week (13-10): From an amateur Dwingeloo historian, we got a pile of scans of postcards featuring the Dwingeloo Radio Telescope, showing it in various stages of its professional period.
https://bit.ly/35ddNe5

All systems are up and running again! 🎉

We are experiencing some technical issues with our web services like http://astron.nl. We hope to fix it as soon as possible.

Today marks Coming Out Day. ASTRON celebrates the fact that people should be free to openly express their gender identity and sexual orientation.
https://bit.ly/3iI2mjp

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