Samata Das
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View article: Exploring magnetised galactic outflows in starburst dwarf galaxies NGC 3125 and IC 4662
Exploring magnetised galactic outflows in starburst dwarf galaxies NGC 3125 and IC 4662 Open
Context. The study of radio emission in starburst dwarf galaxies provides a unique opportunity to investigate the mechanisms responsible for the amplification and transport of magnetic fields. Local dwarfs are often considered proxies for …
View article: Particle acceleration, escape, and non-thermal emission from core-collapse supernovae inside non-identical wind-blown bubbles
Particle acceleration, escape, and non-thermal emission from core-collapse supernovae inside non-identical wind-blown bubbles Open
Context. In the core-collapse scenario, supernova remnants (SNRs) evolve inside complex wind-blown bubbles structured by massive progenitors during their lifetime. Therefore, particle acceleration and the emissions from these SNRs can carr…
View article: Particle acceleration in core-collapse supernova remnant expanding inside the wind bubble
Particle acceleration in core-collapse supernova remnant expanding inside the wind bubble Open
The complex environments around core-collapse supernova remnants (SNRs) originates from their massive progenitors and shapes the spectra and morphology of non-thermal emissions from the remnants. We study the effects of the flow profiles a…
View article: Spectral softening in core-collapse supernova remnant expanding inside wind-blown bubble
Spectral softening in core-collapse supernova remnant expanding inside wind-blown bubble Open
Context. Galactic cosmic rays (CRs) are widely assumed to arise from diffusive shock acceleration, specifically at shocks in supernova remnants (SNRs). These shocks expand in a complex environment, particularly in the core-collapse scenari…
View article: Spectral softening in core-collapse supernova remnant expanding inside wind-blown bubble
Spectral softening in core-collapse supernova remnant expanding inside wind-blown bubble Open
Context. Galactic cosmic rays are widely assumed to arise from diffusive shock acceleration, specifically at shocks in supernova remnants (SNRs). These shocks expand in a complex environment, particularly in the core-collapse scenario as t…
View article: Leptonic Nonthermal Emission from Supernova Remnants Evolving in the Circumstellar Magnetic Field
Leptonic Nonthermal Emission from Supernova Remnants Evolving in the Circumstellar Magnetic Field Open
The very-high-energy (VHE; E > 100 GeV) gamma-ray emission observed from a number of supernova remnants (SNRs) indicates particle acceleration to high energies at the shock of the remnants and a potentially significant contribution to Gala…
View article: Particle acceleration in supernova remnant expanding inside wind-blown bubble
Particle acceleration in supernova remnant expanding inside wind-blown bubble Open
CONTEXT: Supernova Remnants (SNRs) are considered as the primary sources of galactic cosmic rays (CRs), where CRs are assumed to be accelerated by diffusive shock acceleration (DSA) mechanism. The SNR shocks expand in the complex ambient e…
View article: Production of secondary particles in heavy nuclei interactions in supernova remnants
Production of secondary particles in heavy nuclei interactions in supernova remnants Open
Depending on their type, supernova remnants may have ejecta material with high abundance of heavy elements such as carbon or oxygen. In addition, core-collapse supernovae explode in the wind material of their progenitor star that may also …
View article: Particle acceleration at, and gamma-ray emission from supernova remnants in chemically enriched media
Particle acceleration at, and gamma-ray emission from supernova remnants in chemically enriched media Open
Supernova remnants often evolve in material with high abundance of heavy elements such as carbon or oxygen. Hadronic collisions in these enriched media spawn the production of secondary particles such as gamma rays, neutrinos, and secondar…