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The auto and cross angular power spectrum of the Cas A supernova remnant in radio and X-ray
Preetha Saha, Somnath Bharadwaj, Susmita Chakravorty +4
The shell type supernova remnant (SNR) Cas A exhibits structures at nearly all angular scales. Previous studies show the angular power spectrum of the radio emission t…
Angular power spectrum of supernova remnants: effects of structure, geometry and diffuse foreground
Samir Choudhuri, Preetha Saha, Nirupam Roy +2
The study of the intensity fluctuation power spectrum of individual supernova remnants (SNRs) can reveal the structures present at sub-pc scales, and also constrain the physical pr…
A study of Kepler supernova remnant: angular power spectrum estimation from radio frequency data
Preetha Saha, Somnath Bharadwaj, Nirupam Roy +2
Supernova remnants (SNRs) have a variety of overall morphology as well as rich structures over a wide range of scales. Quantitative study of these structures can potentially reveal…
The \HI column density power spectrum of six nearby spiral galaxies
Prasun Dutta, Somnath Bharadwaj
We propose a method to determine the power spectrum of \HI column density fluctuations using radio-interferometric observations of 21-cm emission from the ISM of galaxies. We have…
Probing interstellar turbulence in spiral galaxies using HI power spectrum analysis
Prasun Dutta, Ayesha Begum, Somnath Bharadwaj +1
We estimate the \HI intensity fluctuation power spectrum for a sample of 18 spiral galaxies chosen from THINGS. Our analysis spans a large range of length-scales from $\sim 300 {\r…
Turbulence in the Harassed Galaxy NGC 4254
Prasun Dutta, Ayesha Begum, Somnath Bharadwaj +1
Galaxy harassment is an important mechanism for the morphological evolution of galaxies in clusters. The spiral galaxy NGC 4254 in the Virgo cluster is believed to be a harassed ga…