PhD Aspirant in Astrophysics & Cosmology
Graduate from the University of Science, Malaysia (USM) with a major in Physics and a minor in Astronomy. Currently focused on observational cosmology, particularly large-scale structure, dark matter, dark energy, and astroparticle physics. Working across multiple research centers on cosmology and astrophysics using computational methods, including machine learning, Bayesian inference, and cosmological emulation.
Greetings, everyone. I am Adrita Khan. I am a graduate of the University of Science, Malaysia (USM) with a major in Physics and a minor in Astronomy. My research focuses on observational cosmology, including large-scale structure, dark matter, dark energy, high-energy astroparticle physics, and machine learning applications in astrophysics.
My research focuses on modified gravity theories through cross-correlation analyses of the Cosmic Microwave Background (CMB) and galaxy data. I develop machine learning and deep learning methods for radio astronomy, including automated classification of bent radio AGN and semi-supervised learning approaches. I am currently working on gamma-ray burst redshift estimation and on developing the Explainable Polynomial Chebyshev Network (EPCN), a neural architecture that incorporates interpretable interaction features into Chebyshev-based frameworks.
My research goal is to advance precision cosmology at the intersection of theory and observation, particularly using data from next-generation surveys such as the Vera C. Rubin Observatory’s LSST, the Euclid mission, and DESI. I use computational approaches including machine learning, Bayesian inference, and cosmological emulation to extract constraints on the universe’s origin, evolution, and matter–energy composition. I am committed to fostering diversity, equity, and inclusion within the academic community.
Universiti Sains Malaysia (USM)
School of Physics, Penang, Malaysia • Graduated 2023
Developed comprehensive expertise in quantum mechanics, astrophysics, mathematical physics, and computational methods. Specialized in astronomy with focus on astrophysical phenomena and observational techniques.
My research focuses on testing modified gravity theories, specifically f(R) gravity and Horndeski theories, by analyzing cross-correlated power spectra. The primary objective is to examine the Galaxy-Galaxy power spectrum, Galaxy-CMB lensing cross-power spectrum, and CMB lensing auto-power spectrum to detect signatures of modified gravity that deviate from the standard ΛCDM model. This work contributes to advancing our understanding of gravitational phenomena on cosmological scales.
View ProjectPreprint
arXiv:2512.07420 | December 2025
We introduce the Explainable Particle Chebyshev Network (E-PCN), a graph neural network extending the Particle Chebyshev Network (PCN) for interpretable jet classification in high-energy collider experiments. E-PCN integrates kinematic variables by constructing four graph representations per jet, each weighted by a distinct variable: angular separation (Δ), transverse momentum (k_T), momentum fraction (z), and invariant mass squared (m²). Using Gradient-weighted Class Activation Mapping (Grad-CAM), we determine which kinematic variables dominate classification outcomes.
Preprint
arXiv:2510.22190 | October 2025
We present RGC (Radio Galaxy Classifier), a deep learning-based semi-supervised model designed for classifying bent radio active galactic nuclei (AGN) from Very Large Array (VLA) images. This work represents an important step toward automated classification of radio AGN, enabling more efficient processing of large-scale radio surveys.
2025 IEEE International Conference on Image Processing (ICIP 2025)
arXiv:2505.19249 | May 2025
We introduce RGC-Bent, a curated dataset of 639 radio galaxy images designed to support machine learning-based classification of bent radio AGN. ConvNeXT achieves the highest F1-scores for both NAT and WAT sources, demonstrating the effectiveness of advanced machine learning models in classifying bent radio AGN.
Python • C/C++ • Mathematica • MATLAB • R • SQL • Bash/Shell scripting
NumPy • SciPy • Pandas • scikit-learn • Astropy • Astroquery • PyTorch • TensorFlow
CAMB • CCL • HEALPix • NaMaster • emcee • pocoMC • corner • GetDist • TOPCAT • SAOImage DS9
CosmoPower • bacco • e-mantis • nDGP
MCMC • Bayesian inference • Fisher forecasting • ML/DL frameworks • Feature engineering • Hyperparameter optimization
Linux/Unix • Git/GitHub • Docker • LaTeX • HPC clusters & parallelization