Professor Rob Fender: Publications

An artist's impression of a relativistic jet propagating away from a black hole at close to the speed of light. Such jets are formed by the inner regions of the accretion flow: matter flowing inwards towards the black hole, via processes which are not yet fully understood. The accretion flow emits primarily in X-rays, the relativistic jet in the radio band: by combing observations in each band we can try and understand how such jets form and how much energy they carry away from the black hole.

RFI Flagging Implications for Short-Duration Transients

(2018)

Authors:

Y Cendes, P Prasad, A Rowlinson, RAMJ Wijers, JD Swinbank, CJ Law, AJ van der Horst, D Carbone, JW Broderick, TD Staley, AJ Stewart, F Huizinga, G Molenaar, A Alexov, ME Bell, T Coenen, S Corbel, J Eislöffel, R Fender, J-M Grießmeier, P Jonker, M Kramer, M Kuniyoshi, M Pietka, B Stappers, M Wise, P Zarka

RFI flagging implications for short-duration transients

Astronomy and Computing Elsevier 23 (2018) 103-114

Authors:

Tracking of an electron beam through the solar corona with LOFAR

Astronomy and Astrophysics EDP Sciences 611 (2018) A57

Authors:

G Mann, F Breitling, C Vocks, H Aurass, M Steinmetz, KG Strassmeier, MM Bisi, RA Fallows, P Gallagher, A Kerdraon, A Mackinnon, J Magdalenic, H Rucker, J Anderson, A Asgekar, IM Avruch, ME Bell, MJ Bentum, G Bernardi, P Best, L Birzan, A Bonafede, JW Broderick, M Brueggen, HR Butcher, B Ciardi, A Corstanje, F de Gasperin, E de Geus, A Deller, S Duscha, J Eisloeffel, D Engels, H Falcke, Robert Fender, C Ferrari, W Frieswijk, MA Garrett, J Griessmeier, AW Gunst, M van Haarlem, TE Hassall, G Heald, JWT Hessels, M Hoeft, J Horandel, A Horneffer, E Juette, Aris Karastergiou, WFA Klijn

Abstract:

The Sun's activity leads to bursts of radio emission, among other phenomena. An example is type-III radio bursts. They occur frequently and appear as short-lived structures rapidly drifting from high to low frequencies in dynamic radio spectra. They are usually interpreted as signatures of beams of energetic electrons propagating along coronal magnetic field lines. Here we present novel interferometric LOFAR (LOw Frequency ARray) observations of three solar type-III radio bursts and their reverse bursts with high spectral, spatial, and temporal resolution. They are consistent with a propagation of the radio sources along the coronal magnetic field lines with nonuniform speed. Hence, the type-III radio bursts cannot be generated by a monoenergetic electron beam, but by an ensemble of energetic electrons with a spread distribution in velocity and energy. Additionally, the density profile along the propagation path is derived in the corona. It agrees well with three-fold coronal density model by (1961, ApJ, 133, 983).

SPIRITS 16tn in NGC 3556: A heavily obscured and low-luminosity supernova at 8.8 Mpc

(2018)

Authors:

Jacob E Jencson, Mansi M Kasliwal, Scott M Adams, Howard E Bond, Ryan M Lau, Joel Johansson, Assaf Horesh, Kunal P Mooley, Robert Fender, Kishalay De, Dónal O'Sullivan, Frank J Masci, Ann Marie Cody, Nadia Blagorodnova, Ori D Fox, Robert D Gehrz, Peter A Milne, Daniel A Perley, Nathan Smith, Schuyler D Van Dyk

LOFAR 150-MHz observations of SS 433 and W 50

(2018)

Authors:

JW Broderick, RP Fender, JCA Miller-Jones, SA Trushkin, AJ Stewart, GE Anderson, TD Staley, KM Blundell, M Pietka, S Markoff, A Rowlinson, JD Swinbank, AJ van der Horst, ME Bell, RP Breton, D Carbone, S Corbel, J Eislöffel, H Falcke, J-M Grießmeier, JWT Hessels, VI Kondratiev, CJ Law, GJ Molenaar, M Serylak, BW Stappers, J van Leeuwen, RAMJ Wijers, R Wijnands, MW Wise, P Zarka

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