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Radio Waves
© JvL Drifting subpulses in PSR B0818-13. When zooming into the single pulses, many pulsars exhibit so-called 'secondary periodicities' - waves on waves. These 'drifting subpulses' are likely made by...
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The SKA Architecture Group steps out
© Madroon Community Consultants (MCC) Last week, as part of a drive for the SKA Architecture Group to "get out more", the newly formed SKA1_Low Architecture Team visited ASTRON for an informal...
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Today's Colloquium: Quantifying the feedback from radio AGN
© Stas Shabala (University of Tasmania) Accretion of matter by supermassive black holes residing at the centres of galaxies is responsible for triggering Active Galactic Nuclei (AGNs), the most...
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The first low-frequency limit on Fast Radio Bursts
© JvL The paper describing the two pilot surveys for radio pulsars and fast transients with LOFAR is now in press. In it, we report on the first low-frequency fast-radio burst (FRB) limit. The...
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New member of IAA and vice-chair of the SETI Permanent Committee
© ASTRON The International Academy of Astronautics (IAA, http://iaaweb.org) was founded in 1960, and for the last 55 years has been bringing together the world's foremost space experts at the annual...
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Measuring dielectric constant and loss of foam materials
© ASTRON One of the work packages (WP3) of the SKA-TSM project (Technology for advanced Systems and bio-based Materials) deals with sustainable and cost-efficient designs and production processes. A...
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Katinka Gereb awarded PhD for her thesis on HI stacking analysis of WSRT data
© ASTRON On September 26th, Katinka Gereb, one of the students shared between ASTRON and the Kapteyn Institute, successfully defended her PhD thesis in Groningen on "The role of neutral hydrogen in the...
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Sharp radio images unravel the mystery of gamma rays in stellar explosions
© Chomiuk et al. (2014), NatureNovae are stellar explosions in binary stellar systems where a dense white dwarf accretes material from a companion star, and this eventually triggers a thermonuclear...
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DSL team at the 2nd ESA-CAS workshop in Copenhagen
© ASTRON/SHAO At the 23-24 September Copenhagen Workshop "Planning for a joint scientific space mission", some 14 groups presented space mission concepts and corresponding science cases. They ranged...
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Working in Shifts for UniBoard^2
© ASTRON Currently, Gijs Schoonderbeek and Sjouke Zwier are busy with the lay-out of the UniBoard^2 Printed Circuit Board (PCB). On the prototype, four 20 nm Field Programmable Gate Arrays (FPGAs) are...
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Summer student project: HI in the star forming ring around UGC 9519
© Zhang, Astron UGC 9519 is a large nearby S0 galaxy with a very faint optical disk, which is also faint in the UV, showing signs of low levels of star formation. Along with galaxies like Hoag's Object...
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We welcome another NOVA Fall School
© Madroon Community Consultants (MCC) Every year, when the autumn leaves come fluttering down, and the tidy Dutch grimly wield their powerful leaf-blowers, the Nova Fall School is held in Dwingeloo....
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Today's Colloquium: Jetted Ultra- and Hyperluminous X-ray sources
© David Cseh Black holes typically release their accretion power in the form of radiation, jets, and winds that fundamentally regulate their environment. This effect is best understood if...
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Gravitational lensing at the highest angular resolution
© John McKean / EVN / VLBA-GBT (NRAO) The poster above won 2nd prize in the Astronomy Pretty Poster Pageant (APPP) 2014. All entries are available for editing and outreach purposes within ASTRON....
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12th European VLBI Network Symposium and Users Meeting
© Gianni Alvito, INAF - Osservatorio Astronomico di Cagliari The 12th European VLBI Network Symposium and Users Meeting was held from 7th to 10th of October in Cagliari (Sardinia, Italy). The symposium...
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Gravitational lensing at the highest angular resolution (II)
© John McKean / EVN / VLBA-GBT (NRAO) Gravitational lensing is the deflection of light from a distant background object (the source) by an intervening mass distribution (the lens). If the surface mass...
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Shared Sky
© Rob Millenaar The sites for the Square Kilometre Array in South Africa and Western Australia share the same southern geographic latitude, and as such also share the same night sky, albeit with a time...
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Today's Colloquium: The light and the dark: Can the super-massive black hole...
© Hubble: NASA, ESA, and Q.D. Wang (University of Massachusetts, Amherst); Spitzer: NASA, Jet Propulsion Laboratory, and S. Stolovy (Spitzer Science Center/Caltech) Our understanding of the very centre...
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The pulsar population detected with LPPS
© JvL Last week, the paper describing the first two pulsar surveys with LOFAR appeared in A&A. In it, we report on the first low-frequency fast-radio burst limit (this AJDI) and the discovery of...
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FAST track to completion!
© ASTRON Recently, the SKA Board met in Guiyang, southwest China. At the end of the meeting, our Chinese hosts organised a very special visit to the Five hundred meter Aperture Spherical Telescope...
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