107 citations · 1.3k across the 56 of their papers we have counts for
7 papers · 1 filter
Probing the Fundamental Nature of Particle Dark Matter
Marco Regis, Aritra Basu, Geoff Beck +7
Understanding the fundamental nature of dark matter (DM) is one of the most significant scientific challenges of our time. A compelling hypothesis is that DM consists of a new, yet…
Constraining Axion-like Particles through Multi-epoch Monitoring of Strong Gravitational Lenses
Shivani Deshmukh, Aritra Basu, Dominik J. Schwarz +2
We present new constraints on ultralight axion-like particles (ALPs) through multi-epoch measurements of differential birefringence induced due to a coupling () between the…
Weakly interacting massive particle cross section limits from LOFAR observations of dwarf spheroidal galaxies
L. Gajović, F. Welzmüller, V. Heesen +8
Weakly interacting massive particles (WIMPs) can self-annihilate, thus providing us with a way to indirectly detect dark matter (DM). Dwarf spheroidal (dSph) galaxies are excellent…
Exploring diffuse radio emission in galaxy clusters and groups with the uGMRT and the SKA
Surajit Paul, Ruta Kale, Abhirup Datta +13
Diffuse radio emission has been detected in a considerable number of galaxy clusters and groups, revealing the presence of pervasive cosmic magnetic fields, and of relativistic par…
Properties of polarized synchrotron emission from fluctuation-dynamo action -- I. Application to galaxy clusters
Sharanya Sur, Aritra Basu, Kandaswamy Subramanian
Using magnetohydrodynamic simulations of fluctuation dynamos, we perform broad-bandwidth synthetic observations to investigate the properties of polarized synchrotron emission and…
Searching for axion-like particles under strong gravitational lenses
Aritra Basu, Jishnu Goswami, Dominik J. Schwarz +1
We establish strong gravitational lens systems as robust probes of axion-like particles (ALPs) -- a candidate for dark matter. A tiny interaction of photons with ALPs induces biref…
The Discovery and Nature of Optical Transient CSS100217:102913+404220
A. J. Drake, S. G. Djorgovski, A. Mahabal +32
We report on the discovery and observations of the extremely luminous optical transient CSS100217:102913+404220 (CSS100217 hereafter). Spectroscopic observations show this transien…