Zobrazeno 1 - 10
of 164
pro vyhledávání: '"Subramanian Prasad"'
We use in-situ data from the Wind spacecraft to survey the amplitude of turbulent fluctuations in the proton density and total magnetic field inside a large sample of near-Earth magnetic clouds (MCs) associated with coronal mass ejections (CMEs) from
Externí odkaz:
http://arxiv.org/abs/2210.17359
Autor:
Bhattacharjee, Debesh, Subramanian, Prasad, Vourlidas, Angelos, Nieves-Chinchilla, Teresa, Thejaswi, Niranjana, Sachdeva, Nishtha
Publikováno v:
A&A 669, A153 (2023)
The pressure and energy density of the gas and magnetic field inside solar coronal mass ejections (in relation to that in the ambient solar wind) is thought to play an important role in determining their dynamics as they propagate through the heliosp
Externí odkaz:
http://arxiv.org/abs/2210.16571
Autor:
Bhattacharjee, Debesh, Subramanian, Prasad, Bothmer, Volker, Nieves-Chinchilla, Teresa, Vourlidas, Angelos
Solar coronal mass ejections are well known to expand as they propagate through the heliosphere. Despite this, their cross-sections are usually modeled as static plasma columns within the magnetohydrodynamics (MHD) framework. We test the validity of
Externí odkaz:
http://arxiv.org/abs/2203.06996
Various remote sensing observations have been used so far to probe the turbulent properties of the solar wind. Using the recently reported density modulation indices that are derived using angular broadening observations of Crab Nebula during 1952 -
Externí odkaz:
http://arxiv.org/abs/2104.07766
The temporal behaviour of X-rays from some AGN and microquasars is thought to arise from the rapid collapse of the hot, inner parts of their accretion discs. The collapse can occur over the radial infall timescale of the inner accretion disc. However
Externí odkaz:
http://arxiv.org/abs/2012.04881
Autor:
Subramanian, Prasad, Hanasoge, Shravan
Normal-mode coupling is a helioseismic technique that uses measurements of mode eigenfunctions to infer the interior structure of the Sun. This technique has led to insights into the evolution and structure of toroidal flows in the solar interior. He
Externí odkaz:
http://arxiv.org/abs/2008.08834
Autor:
Raja, K. Sasikumar, Janardhan, P., Bisoi, Susanta Kumar, Ingale, Madhusudan, Subramanian, Prasad, Fujiki, K., Maksimovic, Milan
The extended minimum of Solar Cycle 23, the extremely quiet solar-wind conditions prevailing, and the mini-maximum of Solar Cycle 24 drew global attention and many authors have since attempted to predict the amplitude of the upcoming Solar Cycle 25,
Externí odkaz:
http://arxiv.org/abs/1908.09134
Radio bursts from the solar corona can provide clues to forecast space weather hazards. After recent technology advancements, regular monitoring of radio bursts has increased and large observational data sets are produced. Hence, manual identificatio
Externí odkaz:
http://arxiv.org/abs/1906.11780
Several active galactic nuclei and microquasars are observed to eject plasmoids that move at relativistic speeds. We envisage the plasmoids as pre-existing current carrying magnetic flux ropes that were initially anchored in the accretion disk-corona
Externí odkaz:
http://arxiv.org/abs/1904.10870
Knowing the lengthscales at which turbulent fluctuations dissipate is key to understanding the nature of weakly compressible magnetohydrodynamic turbulence. We use radio wavelength interferometric imaging observations which measure the extent to whic
Externí odkaz:
http://arxiv.org/abs/1901.02297