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Anomalous microwave emission from spinning nanodiamonds around stars
Jane Greaves, Anna Scaife, David Frayer +3
Several interstellar environments produce 'anomalous microwave emission', with brightness-peaks at tens-of-gigahertz frequencies. The emission's origins are uncertain - rapidly-spi…
A LOFAR detection of the low mass young star T Tau at 149 MHz
Colm P. Coughlan, Rachael E. Ainsworth, Jochen Eislöffel +15
Radio observations of young stellar objects (YSOs) enable the study of ionised plasma outflows from young protostars via their free-free radiation. Previous studies of the low-mass…
GMRT detections of low mass young stars at 323 and 608 MHz
Rachael E. Ainsworth, Anna M. M. Scaife, David A. Green +2
We present the results of a pathfinder project conducted with the Giant Metrewave Radio Telescope (GMRT) to investigate protostellar systems at low radio frequencies. The goal of t…
LOFAR tied-array imaging and spectroscopy of solar S bursts
D. E. Morosan, P. T. Gallagher, P. Zucca +50
Context. The Sun is an active source of radio emission that is often associated with energetic phenomena ranging from nanoflares to coronal mass ejections (CMEs). At low radio freq…
LOFAR discovery of a quiet emission mode in PSR B0823+26
C. Sobey, N. J. Young, J. W. T. Hessels +91
PSR B0823+26, a 0.53-s radio pulsar, displays a host of emission phenomena over timescales of seconds to (at least) hours, including nulling, subpulse drifting, and mode-changing.…
Tentative Evidence for Relativistic Electrons Generated by the Jet of the Young Sun-like Star DG Tau
Rachael E. Ainsworth, Anna M. M. Scaife, Tom P. Ray +3
Synchrotron emission has recently been detected in the jet of a massive protostar, providing further evidence that certain jet formation characteristics for young stars are similar…
The LOFAR Pilot Surveys for Pulsars and Fast Radio Transients
Thijs Coenen, Joeri van Leeuwen, Jason W. T. Hessels +87
We have conducted two pilot surveys for radio pulsars and fast transients with the Low-Frequency Array (LOFAR) around 140 MHz and here report on the first low-frequency fast-radio…
Sub-arcsecond high sensitivity measurements of the DG~Tau jet with e-MERLIN
Rachael E. Ainsworth, Tom P. Ray, Anna M. M. Scaife +2
We present very high spatial resolution deep radio continuum observations at 5 GHz (6 cm) made with e-MERLIN of the young stars DG Tau A and B. Assuming it is launched very close (…
The long wavelength view of GG Tau A: Rocks in the Ring World
Anna M. M. Scaife
We present the first detection of GG Tau A at centimeter-wavelengths, made with the Arcminute Microkelvin Imager Large Array (AMI-LA) at a frequency of 16 GHz (λ = 1.8 cm). The sou…
Testing protoplanetary disc dispersal with radio emission
James E. Owen, Anna M. M. Scaife, Barbara Ercolano
We consider continuum free-free radio emission from the upper atmosphere of protoplanetary discs as a probe of the ionized luminosity impinging upon the disc. Making use of previou…
AMI radio continuum observations of young stellar objects with known outflows
AMI Consortium, :, Rachael E. Ainsworth +20
We present 16 GHz (1.9 cm) deep radio continuum observations made with the Arcminute Microkelvin Imager (AMI) of a sample of low-mass young stars driving jets. We combine these new…
Radio continuum observations of Class I protostellar disks in Taurus: constraining the greybody tail at centimetre wavelengths
Anna M. M. Scaife, Jane V. Buckle, Rachael E. Ainsworth +18
We present deep 1.8 cm (16 GHz) radio continuum imaging of seven young stellar objects in the Taurus molecular cloud. These objects have previously been extensively studied in the…
AMI-LA radio continuum observations of Spitzer c2d small clouds and cores: Serpens region
Anna M. M. Scaife, Jennifer Hatchell, Rachael E. Ainsworth +18
We present deep radio continuum observations of the cores identified as deeply embedded young stellar objects in the Serpens molecular cloud by the Spitzer c2d programme at a wavel…