News & Events

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.

Simultaneous optical and radio observations of Perseids

From today (August 11th) up until Friday the yearly Perseids meteor shower will have its peak. This phenomenon is not only interesting for amateur astronomers, professional astronomers will be observing them as well.

Humans of ASTRON: Jorrit Siebenga

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? In this second part of the series, we’ll be sharing the story of Jorrit Siebenga, who joined ASTRON in 2017 as research instrument maker.

Women Astronomers Day

Throughout the history of astronomy, women have played essential roles towards astronomical breakthroughs. In this article we highlight but a few of these women identified in history from 1600 to the modern era.

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

CMEchaser, Detecting Line-Of-Sight Occultations Due To Coronal Mass Ejections

© Parts of this composite contain images published in Shaifullah et al (2020), Solar Physics and are used here under the Springer author reuse clause.

CMEchaser is a python-based software to detect the occultation of background sources by Solar coronal mass ejections (CMEs). The way the software works is displayed in the cartoon on the left. It first converts the celestial coordinates of the source, a distant pulsar in this example, to the khaki helioprojective plane where it is marked by the maroon star. It then checks if a CME moving out from the Sun, traced by the pink CME cone, will encounter the longer, dash-dotted line of sight from the Earth to the source. If such a crossing is detected, the software then produces the plots on the right.

The bottom right plot shows the source marked with a crosshair symbol, overplotted on images of the Sun at the CME launch time, taken from the Solar and Heliospheric Observatory (SOHO) and Solar Dynamics Observatory (SDO) spacecrafts. The top right plot shows the detection of an occultation of the line of sight to the pulsar J0034−0534 (indicated by the star symbol). The pulsar was observed on April 20, 2014 and was occulted by a halo CME launched on April 18. In this plot, the CME is shown by the mauve sector spanning the angular width of the CME (360 deg in this case) and the propagation is only drawn up to the solar elongation (in astronomical units, ua) of the pulsar. The field of view of the Large Angle and Spectrometric Coronagraph Camera 3 (LASCO C3, on board SOHO) is shown by the purple shaded circle and the gold circle in the centre of the plot denotes the Sun. The radial axis shows the Solar Elongation converted to a projected separation in fractional ua. The article describing CMEchaser has been accepted for publication in Solar Physics.

Latest tweets

Daily image of the week: This summer we held a workshop Open-Source Software Lifecycles as part of the ESCAPE project.
https://bit.ly/3iU6cqA

Throwback Thursday (14-09-1995): The 25th anniversary of the Westerbork Synthese Radio Telescoop (WSRT).
#radioastronomy
https://bit.ly/302bdGn

Throwback Thursday (10-09-1991): The real start of SKA.
@SKA_telescope #radioastronomy
https://bit.ly/2EN91Li

Throwback Thursday (10-09-1991): The real start of SKA.
@SKA_telescope #radioastronomy
https://bit.ly/2EN91Li

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