2018ApJ...856...18K

Query : 2018ApJ...856...18K

2018ApJ...856...18K - Astrophys. J., 856, 18-18 (2018/March-3)

Intermediate-mass elements in young supernova remnants reveal neutron star kicks by asymmetric explosions.

KATSUDA S., MORII M., JANKA H.-T., WONGWATHANARAT A., NAKAMURA K., KOTAKE K., MORI K., MULLER E., TAKIWAKI T., TANAKA M., TOMINAGA N. and TSUNEMI H.

Abstract (from CDS):

The birth properties of neutron stars (NSs) yield important information about the still-debated physical processes that trigger the explosion as well as on intrinsic neutron-star physics. These properties include the high space velocities of young neutron stars with average values of several 100 km s–1, with an underlying "kick" mechanism that is not fully clarified. There are two competing possibilities that could accelerate NSs during their birth: anisotropic ejection of either stellar debris or neutrinos. Here we present new evidence from X-ray measurements that chemical elements between silicon and calcium in six young gaseous supernova remnants are preferentially expelled opposite to the direction of neutron star motion. There is no correlation between the kick velocities and magnetic field strengths of these neutron stars. Our results support a hydrodynamic origin of neutron-star kicks connected to asymmetric explosive mass ejection, and they conflict with neutron-star acceleration scenarios that invoke anisotropic neutrino emission caused by particle and nuclear physics in combination with very strong neutron-star magnetic fields.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: supernova remnants - methods: data analysis - stars: neutron - techniques: imaging spectroscopy - X-rays: general

Simbad objects: 17

goto Full paper

goto View the references in ADS

Number of rows : 17
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 SNR G130.7+03.1 SNR 02 05 35.73 +64 49 41.3           ~ 661 4
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 SNR J052559-660453 SNR 05 26 00.4 -66 05 02     12.71     ~ 456 2
4 PSR B0525-66 Psr 05 26 00.7 -66 04 35           ~ 569 1
5 PSR J0633+1746 Psr 06 33 54.153 +17 46 12.91           ~ 1308 0
6 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
7 IGR J11014-6103 gam 11 01 45.05 -61 01 40.3           ~ 61 0
8 SNR G292.0+01.8 SNR 11 24 59 -59 19.1           ~ 351 1
9 PSR J1550-5418 Psr 15 50 54.18 -54 18 23.9           ~ 463 1
10 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 552 3
11 2E 3623 X 16 17 36.30 -51 02 26.6           ~ 126 1
12 PSR J1808-2024 Psr 18 08 39.32 -20 24 40.1           ~ 1316 2
13 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 532 0
14 SNR G027.3+00.0 SNR 18 41 17.8 -04 56 12           ~ 345 3
15 PSR J1841-0456 Psr 18 41 19.29 -04 56 11.4           ~ 296 1
16 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 906 0
17 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

To bookmark this query, right click on this link: simbad:objects in 2018ApJ...856...18K and select 'bookmark this link' or equivalent in the popup menu