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Discovery of a new systematic effect in LOFAR LBA data
© cc Francesco de Gasperin During the 28th imaging busy week a group of calibration and imaging enthusiasts focused on LBA calibration and improvement of Rapthor. A major systematic in LBA data is a...
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Summer opening of the Dwingeloo Telescope
© CC-BY-4.0 Tammo Jan Dijkema During the summer months, volunteers of CAMRAS open up the Dwingeloo telescope for visitors. This year, the telescope was open every Sunday afternoon in July and August....
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The evolution of the Westerbork Corner
© Henk Mulder As you might know there are always two dedicated operators on shift in the control room, one for LOFAR and one for the Westerbork duty. But for a long time when you entered the...
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LOFAR as a passive radar, part two
© ASTRON In a 2008 daily image, Michiel Brentjens showed airplane reflections in a LOFAR measurement at 55 MHz. The airplane was illumitated by a Danish television transmittter located below the...
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Galaxy 3C 236 as seen by LOFAR
© Aleksandar Shulevski A representation of the giant radio galaxy 3C 236 as seen with LOFAR at lowest frequency and highest spatial resolution to date. The LOFAR radio data was used to produce the...
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Pedestal or Paddenstoel
© ASTRON I've always wondered if the words "pedestal" and "paddenstoel (ENG: toadstool, mushroom)" are etymologically related. I found these beautiful species in the forest near the Dwingeloo HQ. They...
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Exploring the Galactic foreground of the gamma ray burst GRB070508
© Denes et al. 2019 When studying the afterglow of gamma ray bursts (GRBs) it is important to account for the Galactic foreground. This is typically done by using data from the Leiden/Argentina/Bon...
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Correspondence Oort - Grote Reber
© Oort Archives This is a photo of a letter sent in September 1945 by Grote Rebert to prof. Oort. Apparently, this letter was the response to the first letter that Oort wrote to Grote Reber, inquiring...
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LofarDag 2019
© ASTRON Nice to see the engagement of so many volunteers; all with the intention to make the LofarDag 2019 (8 September 2019) a success!Visitors, young and older, were promised to find answers on...
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Can radio astronomy improve machine learning?
© Sarod Yatawatta Machine learning, especially deep learning, is becoming ever more ubiquitous in various applications, including radio astronomy. We present a 'rare' counterexample of this trend....
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Precision requirements for Epoch of Reionization imaging
© CC-by-SA The LOFAR Epoch of Reionization project is again a bit closer in understanding how our Universe evolved after the first stars were born. Detecting signals from 13 billion years ago using...
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Colloquium - General relativistic modeling of extragalactic jet formation
© Colloquium Over the last two decades, general relativistic magnetohydrodynamic simulations (GRMHD) have drawn a robust theoretical picture of jet formation in low-luminosity sources. The observations...
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Cake to celebrate the Royal Visit today
© Antonia Rowlinson At coffee this morning, we have special orange tompouce to celebrate that the Dutch Royal Couple are visiting ASTRON today.
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Colloquium - How exoplanets are affected by their host stars
© Colloquium In this talk I will review some recent works on the magnetic activity of Sun-like stars, their winds and potential impact on surrounding exoplanets. Stellar magnetic fields drive space...
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RCU2.0 Design by INAF and ASTRON
© INAF / ASTRON The design teams of INAF and ASTRON have teamed-up to design the new receiver unit for LOFAR. In this way the knowledge of LOFAR and APERTIF both designed by ASTRON and the SKA LFAA...
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LOFAR4SW project passed the Mid Term Review
© LOFAR4SW LOFAR4SW successfully passed the Mid Term Review.On Tuesday 24th of September, the MTR of LOFAR4SW took place at Brussels. The EC Project Officer and External Reviewer were "impressed by the...
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Royal couple visits ASTRON
© Provincie Drenthe On 18 September 2019 the Royal couple visited ASTRON and the Dwingeloo Telescope as part of their 'Streekbezoek' to the province of Drenthe. The Royal Couple was welcomed at the...
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Colloquium: Sub-milliarcsecond astronomy with Imaging Atmospheric Cherenkov...
© Tarek H. (DESY) The angular size of a star is a critical factor in determining its basic properties. Together with the distance, it provides the physical diameter of the star which can be used to...
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Henk Vosmeijer â 40 years anniversary working at ASTRON
© ASTRON A long time ago (or to be more precisely: on October 1st 1979), Henk Vosmeijer started at the Computer Group of the Stichting Radiostraling van Zon en Melkweg. Fourty years later Henk...
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ADASS2019 conference in Groningen coming soon!
© ASTRON The ADASS2019 organizing committee (with several ASTRON and JIVE colleagues) is working hard to make the annual ADASS conference a successful and enjoyable event.(ADASS = Astronomical Data...
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