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X-ray observations of two Type Ia supernovae with an Hα line in their optical spectrum.
- Source :
-
Monthly Notices of the Royal Astronomical Society . Sep2024, Vol. 533 Issue 1, p27-35. 9p. - Publication Year :
- 2024
-
Abstract
- We report on Chandra X-ray observations of SN 2016jae and SN 2018cqj, both low-luminosity Type Ia supernova (SN) that showed the presence of an H line in their early optical spectrum. No X-ray emission is detected at the location of either SN. Upper limits to the luminosity of up to 2 |$\times 10^{40}$| erg s |$^{-1}$| are calculated for each SN, depending on the assumed spectral model, temperature, and column density. This luminosity is comparable to that of another low-luminosity Type Ia SN, SN 2018fhw, that was observed with Chandra. It is generally lower than upper limits calculated for Type Ia-CSM SNe observed in X-rays, and also below that of SN 2012ca, the only Type Ia-CSM SN to have been detected in X-rays. Comparisons are made to other Type Ia SN with an H line observed in X-rays. The observations suggest that while the density into which the SN is expanding may have been high at the time the H |$\alpha$| line was detected, it had decreased considerably by the time of X-ray observations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TYPE I supernovae
*CIRCUMSTELLAR matter
*STELLAR winds
*OPTICAL spectra
*X-rays
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 533
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 179092312
- Full Text :
- https://doi.org/10.1093/mnras/stae1628