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arXiv · 1405.1488

No X-rays from the very nearby Type Ia SN2014J: constraints on its environment

R. Margutti·J. Parrent·A. Kamble·A. M. Soderberg·R. J. Foley·D. Milisavljevic·M. R. Drout·R. Kirshner
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Abstract

Deep X-ray observations of the post-explosion environment around the very nearby Type Ia SN\,2014J (Dl=3.5 Mpc) reveal no X-ray emission down to a luminosity L<7x10^{36} erg/s (0.3-10 keV) at t~20 days after the explosion. We interpret this limit in the context of Inverse Compton emission from upscattered optical photons by the supernova shock and constrain the pre-explosion mass-loss rate of the stellar progenitor system to be <10^{-9} M_sun yr-1 (for wind velocity v_w=100 km/s). Alternatively, the SN shock might be expanding into a uniform medium with density $n_CSM<3 cm-3. These results rule out single-degenerate (SD) systems with steady mass-loss until the terminal explosion and constrain the fraction of transferred material lost at the outer Lagrangian point to be <1%. The allowed progenitors are (i) WD-WD progenitors, (ii) SD systems with unstable hydrogen burning experiencing recurrent nova eruptions with recurrence time t<300 yrs and (iii) stars where the mass loss ceases before the explosion.

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R. Margutti, J. Parrent, A. Kamble, A. M. Soderberg, R. J. Foley, D. Milisavljevic, M. R. Drout, R. Kirshner. 2014-05-07. No X-rays from the very nearby Type Ia SN2014J: constraints on its environment. https://doi.org/10.1088/0004-637x%2F790%2F1%2F52

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