Astronomers Identified New Blazar Radiation Sources
Researchers analyzed four TeV blazars to uncover radiation patterns occurring when jet emissions weaken.
Updated on Sept. 26, 2026 in Physics
Scientists have identified radiation originating from accretion flows in four classical TeV blazars. This discovery provides new insight into energy sources beyond those typically dominated by jets.
Why it matters
Understanding non-jet radiation sources helps researchers clarify the complex energy dynamics of blazars. These findings reveal how celestial bodies emit energy during their quieter states.
The study utilized 13 sets of X-ray data recorded by the NICER and NuSTAR telescopes, which capture different energy spectrums. A TeV is equivalent to one trillion electron volts.
The players
Aryabhatta Research Institute of Observational Sciences
Located in Nainital, this institute conducts advanced astrophysical research and contributed the team for this study.
NICER
The Neutron star Interior Composition Explorer is a space telescope used here to record lower-energy X-ray observations.
NuSTAR
The Nuclear Spectroscopic Telescope Array is a space telescope that captures high-energy X-ray data for celestial analysis.
The details
Researchers combined data from the NICER and NuSTAR space telescopes to observe how blazar spectra behave during both active and quiet states. This dual-telescope approach allowed the team to pinpoint radiation emerging from accretion flows when primary jet emissions naturally dissipate.
Timeline
September 2026: Study results were published in The Astrophysical Journal.
The Big Picture
This study advances the ongoing monitoring of active galactic nuclei spectra by providing specific evidence of accretion flow radiation in TeV blazars. It challenges the conventional view that blazar activity is almost exclusively driven by high-energy jets.
While this research currently informs theoretical physics, improved understanding of high-energy radiation sources supports the development of more accurate space-based detection technologies. These insights could eventually refine how we monitor cosmic events that influence satellite instrumentation.
The takeaway
This discovery demonstrates that even the most volatile celestial objects have quieter, hidden radiation sources worth studying. Researchers continue to look beyond dominant energy signatures to map the full behavior of distant active galaxies.
Further reading
For more on the current state of astrophysical research, visit the Physics section.
Source note: This article includes information reported by The Tribune.
