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Monster radio jet (>66 kpc) observed in quasar at z5
Anniek J. Gloudemans, Frits Sweijen, Leah K. Morabito +6
We present the discovery of a large extended radio jet associated with the extremely radio-loud quasar J1601+3102 at from sub-arcsecond resolution imaging at 144 MHz with…
The best of both worlds: Combining LOFAR and Apertif to derive resolved radio spectral index images
R. Morganti, T. A. Oosterloo, M. Brienza +36
Supermassive black holes at the centres of galaxies can cycle through periods of activity and quiescence. Characterising the duty cycle of active galactic nuclei is crucial for und…
LOFAR observations of the XMM-LSS field
C. L. Hale, W. Williams, M. J. Jarvis +12
We present observations of the XMM Large-Scale Structure (XMM-LSS) field observed with the LOw Frequency ARray (LOFAR) at 120-168 MHz. Centred at a J2000 declination of $-4.5^{\cir…
LoTSS/HETDEX: Optical quasars I. Low-frequency radio properties of optically selected quasars
Gülay Gürkan, Martin Hardcastle, Philip Best +17
The radio-loud/radio-quiet (RL/RQ) dichotomy in quasars is still an open question. Although it is thought that accretion onto supermassive black holes in the centre the host galaxi…
Discovery of a radio galaxy at z = 5.72
A. Saxena, M. Marinello, R. A. Overzier +11
We report the discovery of the most distant radio galaxy to date, TGSS1530 at a redshift of close to the presumed end of the Epoch of Reionisation. The radio galaxy was se…
A search for faint high-redshift radio galaxy candidates at 150 MHz
A. Saxena, P. Jagannathan, H. J. A. Röttgering +6
Ultra-steep spectrum (USS) radio sources are good tracers of powerful radio galaxies at . Identification of even a single bright radio galaxy at can be used to detec…
LOFAR observations of decameter carbon radio recombination lines towards Cassiopeia A
P. Salas, J. B. R. Oonk, R. J. van Weeren +6
We present a study of carbon radio recombination lines towards Cassiopeia A using LOFAR observations in the frequency range 10-33 MHz. Individual carbon lines are detected in a…
Radio-AGN Feedback: When the Little Ones were Monsters
W. L. Williams, H. J. A. Röttgering
We present a study of the evolution of the fraction of radio-loud active galactic nuclei (AGN) as a function of their host stellar mass. We make use of two samples of radio galaxie…
The nature of the low-frequency emission of M51: First observations of a nearby galaxy with LOFAR
D. D. Mulcahy, A. Horneffer, R. Beck +25
The grand-design spiral galaxy M51 was observed with the LOFAR High Frequency Antennas (HBA) and imaged in total intensity and polarisation. This observation covered the frequencie…