4 papers
Explainable machine learning classification of \textit{Chandra} X-ray sources: SHAP analysis of multi-wavelength features
Shivam Kumaran, Samir Mandal, Sudip Bhattacharyya
Extensive astronomical surveys, like those conducted with the {\em Chandra} X-ray Observatory, detect hundreds of thousands of unidentified cosmic sources. Machine learning (ML) me…
Particle Acceleration and Depolarization in the Protostellar jet knots HH 80 and HH 81
A. G. Cheriyan, S. Vig, Nirupam Roy +4
Linearly polarized emission is a powerful tracer of magnetic field geometry and particle acceleration in protostellar jets. We present a polarimetric study of the HH objects HH 80…
First detection of Circular Polarization in radio continuum towards a Massive Protostar
A. G. Cheriyan, S. Vig, Nirupam Roy +4
Polarization measurements provide strong constraints on magnetic fields in star-forming systems. While magnetic field estimates of a few kiloGauss (kG) have been obtained near the…
The Non-Uniform Expansion of the Crab Nebula
T. Martin, D. Milisavljevic, T. Temim +4
We present extensive proper motion measurements of the Crab Nebula made from Canada-France-Hawaii Telescope MegaPrime/MegaCam images taken in 2007, 2016, and 2019. A total of 19974…