3 papers
astro-ph.HE2026
Refined Constraints on the Hard X-ray Polarization of the Crab Pulsar and Nebula Derived from an Extended XL-Calibur Dataset
Matthew G. Baring, Jacob Casey, Sohee Chun +26
We present updated hard X-ray polarization measurements of the Crab pulsar and nebula obtained with the balloon-borne polarimeter XL-Calibur in the ~19-64 keV energy range. During…
astro-ph.HE2025
Fast-Cooling Synchrotron Prompt Emission from Internal Shocks in GRB 241030A
Varun, Bin-Bin Zhang, Xiao-Hong Zhao +3
We present a time-resolved, joint Swift-Fermi spectral study of GRB 241030A (z=1.411) that cleanly isolates the synchrotron origin of its prompt emission and favors a matter-domina…
astro-ph.HE2025
On the origin of multifrequency temporal and spectral variability in Ton 599
Sakshi Maurya, Joysankar Majumdar, Varun +2
In this work, we studied the broadband temporal and spectral properties of the flat-spectrum radio quasar (FSRQ) Ton 599. We collected the long-term data from Jan 2019 to August 20…