Search Results - "Hassall, T. E."
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Synchronous X-ray and Radio Mode Switches: A Rapid Global Transformation of the Pulsar Magnetosphere
Published in Science (American Association for the Advancement of Science) (25-01-2013)“…Pulsars emit from low-frequency radio waves up to high-energy gamma-rays, generated anywhere from the stellar surface out to the edge of the magnetosphere…”
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LOFAR MSSS: detection of a low-frequency radio transient in 400 h of monitoring of the North Celestial Pole
Published in Monthly notices of the Royal Astronomical Society (01-03-2016)“…We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array…”
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LOFAR discovery of a quiet emission mode in PSR B0823+26
Published in Monthly notices of the Royal Astronomical Society (11-08-2015)“…PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over time-scales of seconds to (at least) hours, including nulling, subpulse…”
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Lunar occultation of the diffuse radio sky: LOFAR measurements between 35 and 80 MHz
Published in Monthly notices of the Royal Astronomical Society (01-07-2015)“…We present radio observations of the Moon between 35 and 80 MHz to demonstrate a novel technique of interferometrically measuring large-scale diffuse emission…”
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A large light-mass component of cosmic rays at 10(17)-10(17.5) electronvolts from radio observations
Published in Nature (London) (03-03-2016)“…Cosmic rays are the highest-energy particles found in nature. Measurements of the mass composition of cosmic rays with energies of 10(17)-10(18) electronvolts…”
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Detecting highly dispersed bursts with next-generation radio telescopes
Published in Monthly notices of the Royal Astronomical Society (21-11-2013)“…Recently, there have been reports of six bright, dispersed bursts of coherent radio emission found in pulsar surveys with the Parkes Multibeam Receiver. Not…”
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LOFAR LOW-BAND ANTENNA OBSERVATIONS OF THE 3C 295 AND BOÖTES FIELDS: SOURCE COUNTS AND ULTRA-STEEP SPECTRUM SOURCES
Published in The Astrophysical journal (01-10-2014)“…We present Low Frequency Array (LOFAR) Low Band observations of the Bootes and 3C 295 fields. Our images made at 34, 46, and 62 MHz reach noise levels of 12,…”
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The Perseus Arm Pulsar Survey
Published in Monthly notices of the Royal Astronomical Society (11-02-2013)“…The Perseus Arm Pulsar Survey covers the region of the sky enclosed by Galactic longitudes 200° < l < 260° and Galactic latitudes |b| < 5°. It has been…”
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Discovery of carbon radio recombination lines in absorption towards Cygnus A
Published in Monthly notices of the Royal Astronomical Society (2014)“…We present the first detection of carbon radio recombination line absorption along the line of sight to Cygnus A. The observations were carried out with the…”
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Measuring a Cherenkov ring in the radio emission from air showers at 110-190 MHz with LOFAR
Published in Astroparticle physics (01-05-2015)“…Measuring radio emission from air showers offers a novel way to determine properties of the primary cosmic rays such as their mass and energy. Theory predicts…”
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The brightness and spatial distributions of terrestrial radio sources
Published in Monthly notices of the Royal Astronomical Society (11-10-2013)“…Faint undetected sources of radio-frequency interference (RFI) might become visible in long radio observations when they are consistently present over time…”
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A large light-mass component of cosmic rays at 1017–1017.5 electronvolts from radio observations
Published in Nature (London) (03-03-2016)“…High-resolution radio measurements of air showers—cascades of secondary particles in the atmosphere initiated by cosmic rays—reveal that cosmic rays with…”
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Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR
Published in Monthly notices of the Royal Astronomical Society (01-07-2016)“…The eclipses of certain types of binary millisecond pulsars (i.e. ‘black widows’ and ‘redbacks’) are often studied using high-time-resolution, ‘beamformed’…”
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Detecting highly-dispersed bursts with next-generation radio telescopes
Published 09-09-2013“…Recently, there have been reports of six bright, dispersed bursts of coherent radio emission found in pulsar surveys with the Parkes Multi-beam Receiver. Not…”
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Low-radio-frequency eclipses of the redback pulsar J2215+5135 observed in the image plane with LOFAR
Published 19-04-2016“…The eclipses of certain types of binary millisecond pulsars (i.e. `black widows' and `redbacks') are often studied using high-time-resolution, `beamformed'…”
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A LOFAR census of millisecond pulsars
Published 30-10-2015“…A&A 585, A128 (2016) We report the detection of 48 millisecond pulsars (MSPs) out of 75 observed thus far using the LOFAR in the frequency range 110-188 MHz…”
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Pulsar polarisation below 200 MHz: Average profiles and propagation effects
Published 14-01-2015“…A&A 576, A62 (2015) We present the highest-quality polarisation profiles to date of 16 non-recycled pulsars and four millisecond pulsars, observed below 200…”
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LOFAR Sparse Image Reconstruction
Published 06-03-2015“…A&A 575, A90 (2015) Context. The LOw Frequency ARray (LOFAR) radio telescope is a giant digital phased array interferometer with multiple antennas distributed…”
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Corrigendum: A large light-mass component of cosmic rays at 10171017.5 electronvolts from radio observations
Published in Nature (London) (22-09-2016)Get full text
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