Bulletin of the Astronomical Society of India
N. G. Kantharia1*, P. Dutta2, N. Roy3, G. C. Anupama4, A. Chitale,
C. Ishwara-Chandra1, T. P. Prabhu4, N. M. Ashok5, D. P. K. Banerjee5
1NCRA-TIFR, Pune 411007, India
2IISER, Bhopal 462066, India
3Dept. of Physics, IIT, Kharagpur 721302, India
4 IIA, Bangalore 560034, India
5PRL, Ahmedabad 380009, India
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In this paper, we present the synchrotron light curve at 610MHz from the recurrent nova V745 Sco following its outburst on 6 February 2014. The system has been detected and periodically monitored with the Giant Metrewave Radio Telescope (GMRT) since 9 February 2014 as part of the Galactic Nova with GMRT (GNovaG) project. The light curves are well fit by a model of synchrotron emitting region obscured by foreground thermal gas which eventually becomes optically thin to the low GMRT frequencies. We present the model fit to the 2014 data on V745 Sco and discuss it alongwith the model fit to the 1.4 GHz data of the recurrent nova RS Ophiuchi following its outburst in 1985.
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Keywords : (stars:) novae – radio continuum – V745 Sco