X-Ray Observations of Type Ia Supernova 2018cqj

TL;DR

This paper reports on Chandra X-ray observations of the low luminosity Type Ia supernova 2018cqj, finding no X-ray emission and setting an upper limit on its X-ray luminosity.

Contribution

First X-ray observation of SN 2018cqj, providing constraints on its X-ray emission and progenitor environment.

Findings

No X-ray emission detected at the supernova location.

Upper limit to X-ray luminosity is 2 x 10^{39} erg s^{-1}.

Results inform models of supernova progenitors and circumstellar environment.

Abstract

I report on Chandra X-ray observations of SN 2018cqj, a low luminosity Type Ia supernova that showed an H$\alpha$ line in its optical spectrum. No X-ray emission was detected at the location of the SN, with an upper limit to the X-ray luminosity of 2 $\times 10^{39}$ erg s$^{-1}$.