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• W3137253178 abstract "ABSTRACT We present X-ray and radio observations of what may be the closest Type Iax supernova (SN) to date, SN 2014dt (d = 12.3–19.3 Mpc), and provide tight constraints on the radio and X-ray emission. We infer a specific radio luminosity $L_Rlt (1.0!-!2.4)times 10^{25}, rm {erg, s^{-1}, Hz^{-1}}$ at a frequency of 7.5 GHz and a X-ray luminosity $L_Xlt 1.4times 10^{38}, rm {erg, s^{-1}}$ (0.3–10 keV) at ∼38–48 d post-explosion. We interpret these limits in the context of Inverse Compton (IC) emission and synchrotron emission from a population of electrons accelerated at the forward shock of the explosion in a power-law distribution $N_e(gamma _e)propto gamma _e^{-p}$ with p = 3. Our analysis constrains the progenitor system mass-loss rate to be $dot{M}lt 5.0 times 10^{-6} rm {M_{odot }, yr^{-1}}$ at distances $rlesssim 10^{16}, rm {cm}$ for an assumed wind velocity $v_w=100, rm {km, s^{-1}}$, and a fraction of post-shock energy into magnetic fields and relativistic electrons of ϵB = 0.01 and ϵe = 0.1, respectively. This result rules out some of the parameter space of symbiotic giant star companions, and it is consistent with the low mass-loss rates expected from He-star companions. Our calculations also show that the improved sensitivity of the next-generation Very Large Array (ngVLA) is needed to probe the very low-density media characteristic of He stars that are the leading model for binary stellar companions of white dwarfs giving origin to Type Iax SNe." @default.
• W3137253178 created "2021-03-29" @default.
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• W3137253178 date "2021-05-04" @default.
• W3137253178 modified "2023-10-18" @default.
• W3137253178 title "Constraints on the sub-pc environment of the nearby Type Iax SN 2014dt from deep X-ray and radio observations" @default.
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• W3137253178 doi "https://doi.org/10.1093/mnras/stab1262" @default.
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