Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Roy, Subhashis"'
Autor:
Manna, Souvik, Roy, Subhashis
We have estimated the magnetic field strengths of a sample of seven galaxies using their non-thermal synchrotron radio emission at metre wavelengths, and assuming energy equipartition between magnetic fields and cosmic ray particles. Spatially resolv
Externí odkaz:
http://arxiv.org/abs/2301.03752
Autor:
Roy, Subhashis, Manna, Souvik
We have observed seven nearby large angular sized galaxies at 0.33 GHz using GMRT with angular resolution of $\sim10''$ and sub-mJy sensitivity. Using archival higher frequency data at 1.4 or $\sim$6 GHz, we have then determined their spatially resol
Externí odkaz:
http://arxiv.org/abs/2108.10909
Autor:
Hutschenreuter, Sebastian, Anderson, Craig S., Betti, Sarah, Bower, Geoffrey C., Brown, Jo-Anne, Brüggen, Marcus, Carretti, Ettore, Clarke, Tracy, Clegg, Andrew, Costa, Allison, Croft, Steve, Van Eck, Cameron, Gaensler, B. M., de Gasperin, Francesco, Haverkorn, Marijke, Heald, George, Hull, Charles L. H., Inoue, Makoto, Johnston-Hollitt, Melanie, Kaczmarek, Jane, Law, Casey, Ma, Yik Ki, MacMahon, David, Mao, Sui Ann, Riseley, Christopher, Roy, Subhashis, Shanahan, Russell, Shimwell, Timothy, Stil, Jeroen, Sobey, Charlotte, O'Sullivan, Shane, Tasse, Cyril, Vacca, Valentina, Vernstrom, Tessa, Williams, Peter K. G., Wright, Melvyn, Enßlin, Torsten A.
Publikováno v:
A&A 657, A43 (2022)
This work gives an update to existing reconstructions of the Galactic Faraday rotation sky by processing almost all Faraday rotation data sets available at the end of the year 2020. Observations of extra-Galactic sources in recent years have, among o
Externí odkaz:
http://arxiv.org/abs/2102.01709
Akademický článek
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Autor:
Mohan, Nithin, Roy, Subhashis, Swarup, Govind, Oberoi, Divya, Ramanujam, Niruj Mohan, C, Suresh Raju, Bhardwaj, Anil
Publikováno v:
Icarus, Volume 297, 15 November 2017, Pages 119-125
The Venusian surface has been studied by measuring radar reflections and thermal radio emission over a wide spectral region of several centimeters to meter wavelengths from the Earth-based as well as orbiter platforms. The radiometric observations, i
Externí odkaz:
http://arxiv.org/abs/1709.09390
Autor:
Maan, Yogesh, Krishnakumar, M. A., Naidu, Arun K., Roy, Subhashis, Joshi, Bhal Chandra, Kerr, Matthew, Manoharan, P. K.
Although originally discovered as a radio-quiet gamma-ray pulsar, J1732-3131 has exhibited intriguing detections at decameter wavelengths. We report an extensive follow-up of the pulsar at 327 MHz with the Ooty radio telescope. Using the previously o
Externí odkaz:
http://arxiv.org/abs/1706.08613
Autor:
Nayana, A. J., Chandra, Poonam, Roy, Subhashis, Green, David A., Acero, Fabio, Lemoine-Goumard, Marianne, Marcowith, Alexandre, Ray, Alak K., Renaud, Matthiew
HESS J1731$-$347 a.k.a. SNR G353.6$-$0.7 is one of the five known shell-type supernova remnants (SNRs) emitting in the very high energy (VHE, Energy $>$ 0.1 TeV) $\gamma$-ray domain. We observed this TeV SNR with the Giant Metrewave Radio Telescope (
Externí odkaz:
http://arxiv.org/abs/1701.02765
Autor:
Roy, Subhashis, Sur, Sharanya, Subramanian, Kandaswamy, Mangalam, Arun, Seshadri, TR, Chand, Hum
Origin of magnetic fields, its structure and effects on dynamical processes in stars to galaxies are not well understood. Lack of a direct probe has hampered its study. The first phase of Square Kilometre Array (SKA-I), will have more than an order o
Externí odkaz:
http://arxiv.org/abs/1611.06966
Autor:
Chandra, Poonam, Anupama, G. C., Arun, K. G., Iyyani, Shabnam, Misra, Kuntal, Narasimha, D., Ray, Alak, Resmi, L., Roy, Subhashis, Sutaria, Firoza
With the high sensitivity and wide-field coverage of the Square Kilometre Array (SKA), large samples of explosive transients are expected to be discovered. Radio wavelengths, especially in commensal survey mode, are particularly well suited for uncov
Externí odkaz:
http://arxiv.org/abs/1610.08178
Akademický článek
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