output
19912026
Showing astro-ph.HEShow all

1,770 papers · 1 filter

astro-ph.HE2026

Fingerprints of thermal Comptonization in accreting neutron stars. Plasma-vacuum interplay in cyclotron lines and polarisation

E. Sokolova-Lapa, D. K. Maniadakis, J. J. R. Stierhof +11

X-ray emission from accreting, strongly magnetised neutron stars and its pulse-phase variability probe their magnetic-field geometry, spin orientation, and emission processes. Whet…

astro-ph.HE2026

Search for gamma-ray spectral lines from dark matter annihilation with the H.E.S.S. Inner Galaxy Survey

H. E. S. S. Collaboration, F. Aharonian, H. Ashkar +115

Spectral gamma-ray line features are expected as key signatures from dark matter (DM) annihilations of TeV-scale particle DM. Observations of the Galactic Centre with atmospheric C…

astro-ph.HE2026

A Real-Time Jet Laboratory in Swift J1727.8-1613

Callan M. Wood, James C. A. Miller-Jones, Arash Bahramian +16

We present the results of our intensive VLBI campaign on the black-hole low-mass X-ray binary (LMXB) Swift J1727.8-1613 during its 2023-2024 outburst. We observed the repeated quen…

astro-ph.HE2026

Reverberation in the Narrow Fe K Line in the Seyfert Galaxy NGC 4151 with XRISM

Jon M. Miller, Aberahmen Zoghbi, Xin Xiang +11

Emission lines that "echo" variations in the ionizing flux produced close to black holes are powerful probes of the central engine. In the Seyfert-1.5 galaxy NGC 4151, high-resolut…

astro-ph.HE2026

The Western Jet of SS 433/W50: Hard X-ray Emission, Spectral Evolution, and Comparison to the Eastern Jet

Brydyn Mac Intyre, Samar Safi-Harb, Dmitry Khangulyan +5

The W50 nebula powered by the microquasar SS 433 is a unique laboratory for exploring several fundamental astrophysical phenomena. This study presents observations from NuSTAR and…

astro-ph.HE2026

Search for long-term variability of HESS J1745-290

H. E. S. S. Collaboration, :, A. Acharyya +116

At the center of our Galaxy lies the bright γ-ray point-like source HESS J1745-290, which is compatible in position with Sgr A star, although an association between the two remains…