Clik here to view.
Comet Lovejoy
© Albert van Duin Comet C/2014 Q2 (Lovejoy) was discovered by amateur astronomer Terry Lovejoy on August 17 2014 with a 20cm Schmidt-Cassegrain telescope from Australia. The last few months this comet...
View ArticleClik here to view.
Clik here to view.
Today's colloquium: Investigating high energy particle acceleration and...
© JG The bulk of a neutron star's rotational energy is believed to power an ultra-relativistic outflow, called a pulsar wind, which creates a pulsar wind nebula (PWN) when it expands into its...
View ArticleClik here to view.
Symbionos: Test of Simultaneous Observations
© Madroon Community Consultants (MCC) As explained in an earlier AJDI, the Symbionos project investigates the possible symbiosis of LOFAR and GNSS observations, for mutual benefit in terms of the...
View ArticleClik here to view.
Near-Earth asteroid flyby
© Cees Bassa On January 26th an asteroid by the name of 2004 BL86 flew by the Earth. There was no danger of it impacting, as the closest distance during the flyby was 1.2 million km (3.1 lunar...
View ArticleClik here to view.
LOFAR data goes public
© ASTRON March 2, 2015 marks an important event on the LOFAR calendar. From that day onward, scientific data will be made publicly available through the LOFAR Long Term Archive (LTA). The International...
View ArticleClik here to view.
Meetings are better when people stand up
© Madroon Community Consultants (MCC) It is well-known that meetings are shorter, and arguably more efficient, when people do not loll about in chairs(*). For one thing, it prevents them from fiddling...
View ArticleClik here to view.
Digging up LOFAR in Finland
© Anna Scaife Hi Jan Thought you might like these? Examples of practical bandpass calibration from KAIRA :-) It's generally ok for the elastic bungee to be below the snow line, but as soon as the wire...
View ArticleClik here to view.
Of Beams & Blue Ribands II: Depths and DoFs
© Rhodes University / SKA SA / NRAOLast year we presented a new world record dynamic range (DR) map of the field around 3C147 made from JVLA C- and D-config L-band data. It is about time to refresh...
View ArticleClik here to view.
How Truly Great Inventions are made
© Tom Oosterloo It almost seems to be the case in modern science that the only way to progress is through an increasing level of scale, planning and organisation. Although times change, and it is wrong...
View ArticleClik here to view.
Dutch Astronomy in the 20th Century
© Prometheus Published this week: De ontdekkers van de hemel: De Nederlandse sterrenkunde in de twintigste eeuw, by science historian David Baneke. There is something peculiar about astronomy in the...
View ArticleClik here to view.
SNOW-FAR
© Poppy Martin The Kilpisjärvi Atmospheric Imaging Receiver Array (KAIRA; www.sgo.fi/kaira) uses LOFAR technology to form an independent radio telescope situated in Finnish Lapland (69°4'15''N...
View ArticleClik here to view.
Today's Colloquium: Scattering in the turbulent and ionised intergalactic...
© Kevin Koay (University of Copenhagen) Two phenomena observed in the last decade were attributed to the scattering of radio waves in the ionised intergalactic medium (IGM). The first was the observed...
View ArticleClik here to view.
SETI reloaded: Next Generation Radio Telescopes, Transients and Cognitive...
© ASTRON The Search for Extra-terrestrial Intelligence (SETI) using radio telescopes is an area of research that is now more than 50 years old. Thus far, both targeted and wide-area surveys have yet to...
View ArticleClik here to view.
Today, official opening of the new ASTRON building
© ASTRON Today, the 16th of March 2015, state secretary Dekker from OCW will officially open the new building. After a visit to LOFAR and Westerbork, the opening ceremony will be held at ASTRON's HQ in...
View ArticleClik here to view.
Today's colloquium: Four years of detecting cosmic rays with LOFAR
© AN & LOFAR Cosmic Rays KSP In June 2011 the first signal from an air shower was detected using LOFAR. Air showers are particle cascades in the atmosphere that are caused by very high energy...
View ArticleClik here to view.
Immersed grating Demonstrator Delivered to NOVA-ASTRON
© NOVA Optical Infrared Instrumentation group The Dutch astronomical community is deeply involved in the instrumentation program for the European Extremely-Large Telescope (ELT). One of its instruments...
View ArticleClik here to view.
Today's colloquium: Understanding the Plasma-physical Processes Behind Pulsar...
© ESA/ATG medialab Radio pulsars have been known for nearly half a century, and they have become mainstay tools in several different areas of astrophysics. However, we still have only a rudimentary...
View ArticleClik here to view.
WSRT in the snow.
© Richard Blaauw With the winter behind us, the WSRT can look forward to a very exciting summer period. In particular, the roll-out of APERTIF-6 is about to begin, and several of the telescopes have...
View ArticleClik here to view.
The Low Noise Tile - Bandwidth extension
© ASTRON The successful design and measurements of Low Noise Tile (LNT) arrays were presented in a series of daily images last year. The next step in the development is to broaden the frequency range,...
View Article