Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Sachdeva Nishtha"'
Autor:
Liu, Weihao, Sokolov, Igor V., Zhao, Lulu, Gombosi, Tamas I., Chen, Xiaohang, Sachdeva, Nishtha, Tóth, Gábor, Manchester IV, Ward B., Lario, David, Whitman, Kathryn, Bruno, Alessandro, Cohen, Christina M. S., Mays, M. Leila, Bain, Hazel M.
Solar energetic particles (SEPs) can pose hazardous radiation risks to both humans in space and spacecraft electronics. Numerical modeling based on first principles offers valuable insights into SEPs, providing synthetic observables for SEPs at any t
Externí odkaz:
http://arxiv.org/abs/2412.07581
Autor:
Huang, Zhenguang, Toth, Gabor, Huang, Jia, Sachdeva, Nishtha, van der Holst, Bart, Manchester, Ward B.
A potential field solution is widely used to extrapolate the coronal magnetic field above the Sun's surface to a certain height. This model applies the current-free approximation and assumes that the magnetic field is entirely radial beyond the sourc
Externí odkaz:
http://arxiv.org/abs/2403.01712
In a previous study, Huang et al. (2023) used the Alfven Wave Solar atmosphere Model (AWSoM), one of the widely used solar wind models in the community, driven by ADAPT-GONG magnetograms to simulate the solar wind in the last solar cycle and found th
Externí odkaz:
http://arxiv.org/abs/2403.01656
Autor:
Gombosi Tamas I., Chen Yuxi, Glocer Alex, Huang Zhenguang, Jia Xianzhe, Liemohn Michael W., Manchester Ward B., Pulkkinen Tuija, Sachdeva Nishtha, Al Shidi Qusai, Sokolov Igor V., Szente Judit, Tenishev Valeriy, Toth Gabor, van der Holst Bart, Welling Daniel T., Zhao Lulu, Zou Shasha
Publikováno v:
Journal of Space Weather and Space Climate, Vol 11, p 42 (2021)
Magnetohydrodynamics (MHD)-based global space weather models have mostly been developed and maintained at academic institutions. While the “free spirit” approach of academia enables the rapid emergence and testing of new ideas and methods, the la
Externí odkaz:
https://doaj.org/article/317f30891d9f4187952d9546e2493282
Autor:
Zhao, Lulu, Sokolov, Igor, Gombosi, Tamas, Lario, David, Whitman, Kathryn, Huang, Zhenguang, Toth, Gabor, Manchester, Ward, van der Holst, Bart, Sachdeva, Nishtha
In this paper, we demonstrate the applicability of the data-driven and self-consistent solar energetic particle model, Solar-wind with FIeld-lines and Energetic-particles (SOFIE), to simulate acceleration and transport processes of solar energetic pa
Externí odkaz:
http://arxiv.org/abs/2309.16903
Autor:
Sachdeva, Nishtha, Manchester, Ward B, Sokolov, Igor, Huang, Zhenguang, Pevtsov, Alexander, Bertello, Luca, Pevtsov, Alexei A., Toth, Gabor, van der Holst, Bart
We explore model performance for the Alfven Wave Solar atmosphere Model (AWSoM) with near-real-time (NRT) synoptic maps of the photospheric vector magnetic field. These maps, produced by assimilating data from the Helioseismic Magnetic Imager (HMI) o
Externí odkaz:
http://arxiv.org/abs/2212.05138
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:
Huang, Zhenguang, Toth, Gabor, Sachdeva, Nishtha, Zhao, Lulu, van der Holst, Bartholomeus, Sokolov, Igor, Manchester, Ward, Gombosi, Tamas
We describe our first attempt to systematically simulate the solar wind during different phases of the last solar cycle with the Alfv\'en Wave Solar atmosphere Model (AWSoM) developed at the University of Michigan. Key to this study is the determinat
Externí odkaz:
http://arxiv.org/abs/2210.02501
Autor:
Sachdeva, Nishtha
We investigate the Sun-Earth dynamics of a set of 38 well-observed Coronal Mass Ejections(CMEs) using data from the STEREO, SOHO missions and WIND instrument. We seek to quantify the relative contributions of Lorentz force and aerodynamic drag on the
Externí odkaz:
http://arxiv.org/abs/1907.12673
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