Zobrazeno 1 - 10
of 649
pro vyhledávání: '"Dwivedi, B."'
Autor:
Srivastava, A. K., Singh, Anshika, Singh, Balveer, Murawski, K., Zaqarashvili, T. V., Yuan, D., Scullion, E., Mishra, Sudheer K., Dwivedi, B. N.
We present the formation of quasi-periodic cool spicule-like jets in the solar atmosphere using 2.5-D numerical simulation in two-fluid regime (ions+neutrals) under the presence of thermal conduction and ion-neutral collision. The non-linear, impulsi
Externí odkaz:
http://arxiv.org/abs/2403.14603
Autor:
Wilhelm, K., Dwivedi, B. N.
The production of antihydrogen by several research groups provides the opportunity to measure the gravitational behaviour of antimatter in the gravitational field of the Earth. The predictions in the literature range from normal attraction to repulsi
Externí odkaz:
http://arxiv.org/abs/2203.15512
We perform a 2.5 dimensional magnetohydrodynamic (MHD) simulation to understand a comprehensive view of the formation of spicule-like cool jets due to initial transverse velocity pulses akin to Alfv\'en pulses in the solar chromosphere. We invoke mul
Externí odkaz:
http://arxiv.org/abs/2202.00501
Autor:
Tiwari, Rishikesh1 rktiwari0761@gmail.com, Dwivedi, B. S.1, Sharma, Y. M.1, Thakur, Risikesh2, Sharma, Abhishek1, Nagwanshi, Anil1
Publikováno v:
Legume Research: An International Journal. Jul2024, Vol. 47 Issue 7, p1158-1164. 7p.
We use multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) to study the evolution of Kelvin-Helmholtz (K-H) instability in a fan-spine magnetic field configuration. This magnet
Externí odkaz:
http://arxiv.org/abs/2109.11416
Autor:
Srivastava, A. K., Rao, Yamini K., Konkol, P., Murawski, K., Mathioudakis, M., Tiwari, Sanjiv K., Scullion, E., Doyle, J. G., Dwivedi, B. N.
We observe plasma flows in cool loops using the Slit-Jaw Imager (SJI) onboard the Interface Region Imaging Spectrometer (IRIS). Huang et al. (2015) observed unusually broadened Si IV 1403 angstrom line profiles at the footpoints of such loops that we
Externí odkaz:
http://arxiv.org/abs/2004.02775
Autor:
Srivastava, A. K., Mishra, Sudheer K., Jelínek, P., Samanta, Tanmoy, Tian, Hui, Pant, Vaibhav, Kayshap, P., Banerjee, D., Doyle, J. G., Dwivedi, B. N.
Using multiwavelength imaging observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) on 03 May 2012, we present a novel physical scenario for the formation of a temporary X-point in the solar corona, whe
Externí odkaz:
http://arxiv.org/abs/1901.07971
Autor:
Srivastava, A. K., McIntosh, S. W., Arge, N., Banerjee, D., Cliver, E., Dikpati, M., Dwivedi, B. N., Guhathakurta, M., Karak, B. B., Leamon, R. J., Martens, P., Matthew, S. K., Munoz-Jaramillo, A., Nandi, D., Norton, A., Upton, L., Chatterjee, S., Mazumder, R., Rao, Yamini K., Yadav, R.
In 1844 Schwabe discovered that the number of sunspots increased and decreased over a period of about 11 years, that variation became known as the sunspot cycle. Almost eighty years later, Hale described the nature of the Sun's magnetic field, identi
Externí odkaz:
http://arxiv.org/abs/1807.07601
We investigate the Interface Region Imaging Spectrograph (IRIS) observations of the quiet-Sun (QS) to understand the propagation of acoustic waves in transition region (TR) from photosphere. We selected a few IRIS spectral lines, which include the ph
Externí odkaz:
http://arxiv.org/abs/1807.01449
Publikováno v:
RAA:2018
We observed a C-class flare at the outer boundary of the super-penumbra of a sunspot. The flare was triggered by an emerging magnetic bipolar region that was obliquely oriented with respect to the super-penumbral fibrils. The flare started due to the
Externí odkaz:
http://arxiv.org/abs/1806.00232