2023MNRAS.519L..74K

Query : 2023MNRAS.519L..74K

2023MNRAS.519L..74K - Mon. Not. R. Astron. Soc., 519, L74-L78 (2023/February-2)

Using 44Ti emission to differentiate between thermonuclear supernova progenitors.

KOSAKOWSKI D., UGALINO M.I., FISHER R., GRAUR O., BOBRICK A. and PERETS H.B.

Abstract (from CDS):

The radioisotope 44Ti is produced through α-rich freezeout and explosive helium burning in type Ia supernovae (SNe Ia). In this paper, we discuss how the detection of 44Ti, either through late-time light curves of SNe Ia, or directly via gamma-rays, can uniquely constrain the origin of SNe Ia. In particular, building upon recent advances in the hydrodynamical simulation of helium-ignited double white dwarf binaries, we demonstrate that the detection of 44Ti in a nearby SN Ia or in a young Galactic supernova remnant (SNR) can discriminate between the double-detonation and double-degenerate channels of sub-Chandrasekhar (sub-MCh) and near-Chandrasekhar (near-MCh) SNe Ia. In addition, we predict that the late-time light curves of calcium-rich transients are entirely dominated by 44Ti.

Abstract Copyright: © 2022 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): nuclear reactions, nucleosynthesis, abundances - white dwarfs - transients: supernovae

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SN 1572A SN* 00 25 21.5 +64 08 27           B8 1254 1
2 V* S And No* 00 42 43.12368 +41 16 03.2124           ~ 190 2
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 SNR G130.7+03.1 SNR 02 05 35.73 +64 49 41.3           ~ 661 4
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
7 SN 2021gno SN* 12 12 10.294 +13 14 57.03   17.92 17.32     SNII 26 0
8 SN 2019ehk SN* 12 22 56.130 +15 49 33.60           SNIb 60 0
9 SNR G306.3-00.9 SNR 13 21 50.9 -63 33 50           ~ 28 0
10 SN 2011fe SN* 14 03 05.711 +54 16 25.22   10.12 10.06     SNIa-norm 747 1
11 NAME Kepler's SN SNR 17 30 40.51 -21 29 14.4           ~ 851 3
12 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
13 SNR G001.9+00.3 SNR 17 48 46.02 -27 09 52.0           ~ 243 1
14 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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