2021ApJ...912...36H

Query : 2021ApJ...912...36H

2021ApJ...912...36H - Astrophys. J., 912, 36-36 (2021/May-1)

Dynamics of laterally propagating flames in X-ray bursts. II. Realistic burning and rotation.

HARPOLE A., FORD N.M., EIDEN K., ZINGALE M., WILLCOX D.E., CAVECCHI Y. and KATZ M.P.

Abstract (from CDS):

We continue to investigate two-dimensional laterally propagating flames in type I X-ray bursts using fully compressible hydrodynamics simulations. In the current study we relax previous approximations where we artificially boosted the flames. We now use more physically realistic reaction rates, thermal conductivities, and rotation rates, exploring the effects of neutron star rotation rate and thermal structure on the flame. We find that at lower rotation rates the flame becomes harder to ignite, whereas at higher rotation rates the nuclear burning is enhanced by increased confinement from the Coriolis force and the flame propagates steadily. At higher crustal temperatures, the flame moves more quickly and accelerates as it propagates through the atmosphere. If the temperature is too high, instead of a flame propagating across the surface the entire atmosphere burns uniformly. Our findings could have implications for the relationship between observed burst rise times and neutron star rotation and accretion rates. All of the software used for these simulations is freely available.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): X-ray bursts - Nucleosynthesis - Open source software - Hydrodynamics - Hydrodynamical simulations - Neutron stars - Computational methods

Simbad objects: 1

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Number of rows : 1
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 IGR J17480-2446 LXB 17 48 04.831 -24 46 48.87           ~ 204 0

Query : 2021ApJ...912...36H

Basic data :
IGR J17480-2446 -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2CXO,CXOGlb,...), LXB (2011MNRAS), Psr (2011A&A), gam (IGR)
ICRS coord. (ep=J2000) : 		17 48 04.831 -24 46 48.87 (X-ray) [ ] D 2011A&A...526L...3P
FK4 coord. (ep=B1950 eq=1950) : 		17 45 00.267 -24 45 50.02 [ ]
Gal coord. (ep=J2000) : 		003.838425 +01.686263 [ ]
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Identifiers (6) :
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2CXO J174804.8-244649 IGR J17480-2446 NAME T5X2
CXOGlb J174804.8-244648 NAME TER 5 X-2 [HWC2006] CX 25

References (204 between 1850 and 2026) (Total 204)
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