7 papers
Algebraic Structure of Three-Flavor Neutrino Oscillations in Constant-Density Matter: Cayley--Hamilton Evolution, DMP Resummation, and Closed-Form Uncertainty Propagation
Aaryan Chaulagain, Anju Dhakal, Daya Nidhi Chhatkuli
For three-flavor neutrino oscillations in constant-density matter, the Cayley--Hamilton theorem forces the evolution operator into a quadratic polynomial in , with coeffic…
Groups of Dwarf Galaxies in the Local Universe
Sanjaya Paudel, Cristiano G. Sabiu, Suk-Jin Yoon +3
We present a systematic search for dwarf-galaxy groups in the local Universe (), identifying 28 systems containing at least four spectroscopically confirmed members selecte…
Singularity reversal of Schwarzschild black holes in Anti-de-Sitter
Rakshit Poudel, Daya Nidhi Chhatkuli, Madhav Kafle
We propose a non-metastable de-Sitter infinitesimal patch as a replacement for the theoretical singularity that occurs during the description of maximally extended Schwarzschild An…
A Lightning-Fast Three-Flavor Neutrino Oscillation Calculator in Constant-Density Matter with Built-In Uncertainty Propagation
Aaryan Chaulagain, Daya Nidhi Chhatkuli, Anju Dhakal
Neutrino oscillation experiments are entering an era of precision, requiring both fast calculations and reliable uncertainty estimates. We present a compact three-flavor oscillatio…
Different Origins of Nucleated and Non-nucleated Dwarf Elliptical Galaxies: Identified by the Deep-learning
Sanjaya Paudel, Cristiano G. Sabiu, Suk-Jin Yoon +4
Dwarf elliptical galaxies (dEs) are the dominant population in galaxy clusters and serve as ideal probes for studying the environmental impact on galactic evolution. A substantial…
TESS Light Curve Analysis: A Case Study of Stellar Rotation in TIC 445493624
Pratik Paudel, Daya Nidhi Chhatkuli, Bikash Sharma +3
Stellar rotation is a fundamental parameter governing a star's magnetic activity and evolution. The Transiting Exoplanet Survey Satellite (TESS) provides high-precision photometric…