2020ApJ...897..168K

Query : 2020ApJ...897..168K

2020ApJ...897..168K - Astrophys. J., 897, 168-168 (2020/July-2)

Oscillating strange quark matter objects excited in stellar systems.

KUTSCHERA M., JALOCHA J., BRATEK L., KUBIS S. and KEDZIOREK T.

Abstract (from CDS):

It is shown that strange quark matter (SQM) objects, stars, and planets, can very efficiently convert the mechanical energy into hadronic energy when they oscillate. This is because the mass density at the edge of SQM objects, ρ0=4.7×1014gcm–3, is the critical density below which SQM is unstable with respect to decay into photons, hadrons, and leptons. We consider here radial oscillations of SQM objects that could be induced in stellar or planetary systems where tidal interactions are ubiquitous. Oscillations of 0.1 % radius amplitude already result in 1keV per unit baryon number excitation near the surface of SQM stars. The excitation energy is converted into electromagnetic energy in a short time of 1ms, during a few oscillations. Higher amplitude oscillations result in faster energy release that could lead to fragmentation or dissolution of SQM stars. This would have significant consequences for hypothetical SQM star binaries and planetary systems of SQM planets with regard to gravitational wave emission.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Gravitational wave sources - Compact objects - High energy astrophysics - Stellar oscillations - Tidal distortion - Relativistic stars - Compact binary stars

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 PSR B1257+12 Psr 13 00 03.1075 +12 40 55.155           ~ 546 1

Query : 2020ApJ...897..168K

Basic data :
PSR B1257+12 -- Pulsar
Other object types: otypes_help 		Psr (PSR)
ICRS coord. (ep=J2000) : 		13 00 03.1075 +12 40 55.155 [ ] D 2013MNRAS.433..162Y
FK4 coord. (ep=B1950 eq=1950) : 		12 57 33.0459 +12 57 08.745 [ ]
Gal coord. (ep=J2000) : 		311.3020260 +75.4135657 [ ]
Proper motions mas/yr : 		46.44 -84.87 [0.08 0.32 90] C 2013MNRAS.433..162Y
Parallaxes (mas): 		1.41 [0.08] C 2013MNRAS.433..162Y
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Hierarchy : number of linked objects
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PSR B1257+12 NAME Lich PSR J1300+1240

References (546 between 1850 and 2026) (Total 546)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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