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Research Paper#Active Galactic Nuclei (AGN), X-ray Astronomy, Accretion Physics🔬 ResearchAnalyzed: Jan 3, 2026 17:02

X-ray Study of AGN Mrk 1040 Reveals Accretion Regime Transitions

Published:Dec 30, 2025 11:04
1 min read
ArXiv

Analysis

This paper provides a detailed analysis of the active galactic nucleus Mrk 1040 using long-term X-ray observations. It investigates the evolution of the accretion properties over 15 years, identifying transitions between different accretion regimes. The study examines the soft excess, a common feature in AGN, and its variability, linking it to changes in the corona and accretion flow. The paper also explores the role of ionized absorption and estimates the black hole mass, contributing to our understanding of AGN physics.
Reference

“The source exhibits pronounced spectral and temporal variability, indicative of transitions between different accretion regimes.”

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Research Paper#Astrophysics, Blazars, X-ray Astronomy🔬 ResearchAnalyzed: Jan 3, 2026 23:56

Spectral State Switching in Mrk 421 Observed by AstroSat

Published:Dec 26, 2025 06:15
1 min read
ArXiv

Analysis

This paper presents a detailed X-ray spectral analysis of the blazar Mrk 421 using AstroSat observations. The study reveals flux variability and identifies two dominant spectral states, providing insights into the source's behavior and potentially supporting a leptonic synchrotron framework. The use of simultaneous observations and time-resolved spectroscopy strengthens the analysis.
Reference

“The low-energy particle index is found to cluster around two discrete values across flux states indicating two spectra states in the source.”

PermalinkArXiv