2025MNRAS.540.3242D

Query : 2025MNRAS.540.3242D

2025MNRAS.540.3242D - Mon. Not. R. Astron. Soc., 540, 3242-3246 (2025/July-2)

A possible variation in X-ray polarization from the PSR B1259-63/LS 2883 System.

DENG W., XIE F., WENG S.-S., GE M., LA MONACA F., DI MARCO A. and LIANG E.-W.

Abstract (from CDS):

PSR B1259-63/LS 2883 is a gamma-ray binary system with a radio pulsar orbiting the Be star LS 2883, in an orbital period of 1236.7 d. When the pulsar passes through the companion circumstellar disc of LS 2883, flux variations are observed across all wavelengths due to the interaction between the outflow of LS 2883 and the relativistic wind of the pulsar. We obtained X-ray polarization results for PSR B1259-63 using the Imaging X-ray Polarimetry Explorer during the X-ray bright phase following the periastron passage in June 2024. A possible polarization degree variability is observed in 2-6 keV, with the polarization degree decreasing from 15$\pm$2 per cent during the high flux period to 4$\pm$2 per cent in the low flux period. The potential variability in polarization degree points to evolving physical conditions in the emission region, likely tied to the variation in the uniformity of the magnetic field within the shock cone.

Abstract Copyright: © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): magnetic fields - polarization - pulsars: general - X-rays: binaries

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 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0

Query : 2025MNRAS.540.3242D

Basic data :
CPD-63 2495 -- High Mass X-ray Binary
Other object types: otypes_help 		Be* (), * (1971PW&SO,CPD,...), X (2022MNRAS,AX,...), gam (2018A&A,4FGL,...), Em* (Hen,THA,...), MIR (AKARI,MSX6C,...), HXB (2013MNRAS), Psr (2012ApJ,PSR), V* (2012A&A,AAVSO), Q? (2021MNRAS), Rad (2013MNRAS), UV (XMMOM), NIR (2MASS)
ICRS coord. (ep=J2000) : 		13 02 47.6544015048 -63 50 08.626970292 (Optical) [ 0.0089 0.0100 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		12 59 38.2624444635 -63 34 01.600570784 [ 0.0089 0.0100 90 ]
Gal coord. (ep=J2000) : 		304.1835825651141 -00.9915845699421 [ 0.0089 0.0100 90 ]
Proper motions mas/yr : 		-7.093 -0.342 [0.012 0.014 90] A 2020yCat.1350....0G
Parallaxes (mas): 		0.4434 [0.0133] A 2020yCat.1350....0G
Spectral type: 		O9.5Ve C 2014MNRAS.439..432C
Fluxes (11) :
U 10.34 [~] D 2003AJ....125.2531R
B 10.72 [0.01] D 2012yCat.1322....0Z
V 9.98 [0.06] D 2012yCat.1322....0Z
R 10.03 [0.01] D 2012yCat.1322....0Z
G 9.632835 [0.002780] C 2020yCat.1350....0G
J 8.026 [0.027] C 2003yCat.2246....0C
H 7.699 [0.055] C 2003yCat.2246....0C
K 7.248 [0.020] C 2003yCat.2246....0C
g 10.66 [0.01] E 2012yCat.1322....0Z
r 9.64 [0.01] E 2012yCat.1322....0Z
i 9.13 [0.04] D 2012yCat.1322....0Z
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Identifiers (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CPD-63 2495 HESS J1302-638 THA 17-8 4XMM J130247.6-635008
AKARI-IRC-V1 J1302480-635009 INTREF 538 TIC 439164152 XMMOM J130247.7-635008
ALS 2883 LLNS 9661 TYC 8997-1597-1 [GM76] 259
AX J1302-638 LS 2883 UCAC2 3710789 [KRL2007b] 130
2CXO J130247.6-635008 2MASS J13024765-6350085 UCAC4 131-076808 [L68] 195
4FGL J1302.9-6349 MSX6C G304.1845-00.9916 uvby98 -006302495 [OKM2018] SWIFT J1302.3-6385
3FHL J1303.0-6350 PSR J1302-6350 1WGA J1302.8-6350 [VDD70] Cen-Mus 1
GEN# -0.06302495 PSR B1259-63 WISEA J130247.65-635008.6 AAVSO 1256-63
GSC 08997-01597 SSTGLMC G304.1836-00.9916 WISE J130247.65-635008.6 Gaia DR3 5862299960127967488
Hbg 757 2SXPS J130247.6-635008 WRAY 15-1053 Gaia DR1 5862299955795862144
Hen 3-852 TeV J1302-638 2XMM J130247.6-635008 Gaia DR2 5862299960127967488

References (852 between 1850 and 2026) (Total 852)
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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Collections of Measurements Description of Measurements

Distance : 2    Var : 1    Plx : 3    PM : 2    SpT : 3   

   

Observing logs
ISO : 2    IUE : 3    XMM : 11   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : CPD-63 2495

Link by name to the catalogue in VizieR :

CPD-63 2495 AKARI-IRC-V1 J1302480-635009 ALS 2883 GSC 08997-01597 LS 2883
2MASS J13024765-6350085 MSX6C G304.1845-00.9916 SSTGLMC G304.1836-00.9916 TYC 8997-1597-1 UCAC2 3710789
UCAC4 131-076808 uvby98 -006302495 WISEA J130247.65-635008.6 WISE J130247.65-635008.6 Gaia DR3 5862299960127967488
Gaia DR1 5862299955795862144 Gaia DR2 5862299960127967488

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