2025ApJ...988..244R

Query : 2025ApJ...988..244R

2025ApJ...988..244R - Astrophys. J., 988, 244 (2025/August-1)

NuSTAR Analysis of the 2024 Periastron Passage of TeV Binary PSR B1259-63.

ROBERTS O.J., KAARET P., SAADE M.L., CHEN C.-T., EHLERT S.R., LIODAKIS I. and WEISSKOPF M.C.

Abstract (from CDS):

PSR B1259-63 is a well-studied TeV binary, with an energetic pulsar in orbit around a Be star. Using Nuclear Spectroscopic Telescope Array observations during the 2024 passage of the pulsar through the circumstellar disk, we find the spectrum to be the most energetic (Γ = 1.5) around 27 days after periastron, during the first of two variable, short-term emission episodes of a contemporaneous GeV flare. We discuss the variability in the X-ray flux and the hardening of the spectrum with time, and in the context of previous observations and what that means for the competing energy loss and acceleration timescales.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Rotation powered pulsars - Non-thermal radiation sources - High energy astrophysics - Binary stars - Magnetic fields

Simbad objects: 2

goto Full paper

goto View the references in ADS

Number of rows : 2
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 J13020-6359 HXB 13 01 58.7205396744 -63 58 08.828687136           B0.5Ve 68 0
2 CPD-63 2495 HXB 13 02 47.6544015048 -63 50 08.626970292 10.34 10.72 9.98 10.03   O9.5Ve 852 0

To bookmark this query, right click on this link: simbad:objects in 2025ApJ...988..244R and select 'bookmark this link' or equivalent in the popup menu