2024MNRAS.528.6319A

Query : 2024MNRAS.528.6319A

2024MNRAS.528.6319A - Mon. Not. R. Astron. Soc., 528, 6319-6328 (2024/March-2)

Rapid neutron star cooling triggered by dark matter.

AVILA A., GIANGRANDI E., SAGUN V., IVANYTSKYI O. and PROVIDENCIA C.

Abstract (from CDS):

We study the effect of asymmetric fermionic dark matter (DM) on the thermal evolution of neutron stars (NSs). No interaction between DM and baryonic matter is assumed, except the gravitational one. Using the two-fluid formalism, we show that DM accumulated in the core of a star pulls inwards the outer baryonic layers of the star, increasing the baryonic density in the NS core. As a result, it significantly affects the star's thermal evolution by triggering an early onset of the direct Urca (DU) process and modifying the photon emission from the surface caused by the decrease of the radius. Thus, due to the gravitational pull of DM, the DU process becomes kinematically allowed for stars with lower masses. Based on these results, we discuss the importance of NS observations at different distances from the Galactic Centre. Since the DM distribution peaks towards the Galactic Centre, NSs in this region are expected to contain higher DM fractions that could lead to a different cooling behavior.

Abstract Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): equation of state - stars: neutron - dark matter

Simbad objects: 31

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Number of rows : 31
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 J0030+0451 Psr 00 30 27.42348 +04 51 39.7144           ~ 596 1
2 SNR G130.7+03.1 SNR 02 05 35.73 +64 49 41.3           ~ 661 4
3 PSR J0205+6449 Psr 02 05 37.92 +64 49 42.8           ~ 268 1
4 PSR J0348+0432 Psr 03 48 43.6363173480 +04 32 11.461921260           ~ 311 2
5 PSR J0357+32 Psr 03 57 52.161 +32 05 23.63           ~ 104 0
6 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
7 PSR J0538+2813 Psr 05 38 25.06 +28 17 11.0           ~ 224 1
8 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0
9 PSR B0656+14 Psr 06 59 48.18800 +14 14 19.2000   24.85 24.90     ~ 943 1
10 RX J0720.4-3125 N* 07 20 24.961 -31 25 50.21   26.1   27.0   ~ 316 0
11 PSR J0740+6620 Psr 07 40 45.799 +66 20 33.60           ~ 395 0
12 RX J0822.0-4300 X 08 22 26.84204 -43 10 26.2350           ~ 48 1
13 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
14 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
15 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
16 PSR J0952-0607 Psr 09 52 08.319 -06 07 23.49           ~ 103 0
17 PSR B1055-52 Psr 10 57 59.0450 -52 26 56.330           ~ 757 0
18 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 439 1
19 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 2683 0
20 PSR J1357-6429 Psr 13 57 02.525 -64 29 29.89           ~ 171 1
21 PSR B1706-44 Psr 17 09 42.62000 -44 29 12.0000     13.30     ~ 670 1
22 SNR G353.6-00.7 SNR 17 31 55.0 -34 42 36           ~ 172 0
23 XMMU J173203.3-344518 X 17 32 03.3 -34 45 18           ~ 40 0
24 PSR J1741-2054 Psr 17 41 57.282 -20 54 04.11           ~ 123 1
25 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
26 PSR J1810+17 Psr 18 10 37.2791131488 +17 44 37.425884136           ~ 147 1
27 RX J1856.6-3754 Psr 18 56 35.11 -37 54 30.5     25.7     ~ 456 0
28 PSR J2043+2740 Psr 20 43 43.5 +27 40 56           ~ 137 0
29 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
30 PSR B2334+61 Psr 23 37 05.779 +61 51 01.69           ~ 206 1
31 GRB 190425 GWE ~ ~           ~ 438 0

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