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Connecting with the Portuguese for SKA Aperture Array developments
© NL SKA Office While the Netherlands and Portugal did not play each other during the recent soccer World-championship in Brazil, radio-astronomical relations between the two countries have blossomed...
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Scintillation Arcs in the Ionosphere
© Richard Fallows Compact radio sources twinkle ("scintillate") because of variations in density moving around in the interstellar medium, the solar wind (the continual expansion of the Sun's...
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Millisecond Pulsar Scintillation Studies with LOFAR: Initial Results
© Anne Archibald Stars twinkle because the turbulent atmosphere creates interference patterns in their images. At radio frequencies, the atmosphere doesn't affect the signal (much), but the...
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ALMA Band 5 Mirrorblock Production
© NOVA If you happened to be around in the small hours of the night recently, you might have heard the milling machine (still) running. It loyally and untiringly worked for us through the night, making...
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A Deep 20-GHz Survey in the South
© Tom Franzen A team of astronomers, led by Tom Franzen (CSIRO) and including ASTRON astronomer Elizabeth Mahony, have recently presented the source catalogue and first results from a deep, blind radio...
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The APERTIF Phase Locked Loop (PLL) Unit
© ASTRON, 2014 Just some impressions of the APERTIF Phase Locked Loop Unit (PLL) which was installed in radiotelescopes 2 and 5 at the Westerbork site on June 24th. The PLL is a vital part of the Local...
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Becoming a H.I.T.
© Chris Gull The Hanze Institute of Technology (H.I.T) in Assen is a department of the Hanze Hogeschool Groningen. It offers a 4-year bachelor-plus programme in Advanced Sensor Applications (ASA)....
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An unknown hydrogen cloud near spiral galaxy NGC 2403
© Erwin de Blok One of the unanswered questions about galaxies is where they get their gas from. When galaxies form stars, they consume their gas. Measurements show they do not contain enough gas to...
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Einstein cake and more
© Roel Witvers On wednesday July 2nd, a (g)astronomical competition came to it's bubbling climax: an expert panel, consisting of experts of various sorts, judged the Milky Way cocktails and Dark Matter...
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A day in the life of a millisecond pulsar
© Cees Bassa On June 22 and 23rd, 2013 nine telescopes, spread around the world, joined together to observe a millisecond pulsar continuously for 24 hours. The Parkes telescope in Australia started the...
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Probing the gas content of radio galaxies through HI absorption stacking
© Katinka Gereb Accretion onto the central black hole of galaxies is thought to be connected with the presence and kinematical properties of the gas. In radio-loud active galactic nuclei (AGN), neutral...
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EWASS 2014 Symposium on Low-frequency Radio Astronomy
© Raffaella Morganti et al. The Symposium "Exploring the Low-frequency Radio Sky in the SKA Era" was held in Geneva, Switzerland from 30 June - 01 July as part of the 2014 European Week of Astronomy...
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M51 observed at 151 MHz with LOFAR
© David Mulcahy (MPIfR) Nearby spiral galaxies have hardly been studied in the very low radio frequency range (less than 300 MHz) due to many technical challenges. Up to now, the only observations of...
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Attention to Detail
© Madroon Community Consultants (MCC) The unusual success of institutes like ASTRON or JIVE is rooted in many factors, and one of them is an unusual attention to detail. Not many people would notice...
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Mode-switching pulsar B0943+10 holds yet another surprise
© Anna Bilous, LOFAR PWG PSR B0943+10 is one of the best examples of the rare class of mode-switching pulsars. Unlike most of the pulsar population, B0943+10 has two stable modes of radio emission,...
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Dust as Food for Galaxies
© NOAO, HST, ASTRON Galaxies can be dusty. And dust appears in galaxies (like it does in daily life) as dark patches. In the case of galaxies, it is blocking the light of the stars. Some examples are...
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World largest Microphone phased array
© Foto (inserts): (c) Sorama (c) ASTRON Last Friday, 22th of August, Dutch company Sorama sets a record when combining four of their 1024 microphone arrays to one large 4096 elements array. The...
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The Great and the Good
© aspera This jolly gathering of the Great and the Good is celebrating the award of the 2014 Grote Reber medal to Ron Ekers during the recent General Assembly of the URSI(*) in Beijing. This highly...
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Low Frequency Science and Technology Symposium
© SHAO At the August 14-15 Space-based Ultimate Low Frequency Radio Astronomy Symposium at the Shanghai Astronomical Observatory (SHAO), scientists from China and Europe discussed future satellite...
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ASTRON News summer edition 2014
© ASTRON The summer edition of ASTRON news has hit the streets - don't miss out on the latest news from ASTRON! http://tinyurl.com/ovxudau
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