Zobrazeno 1 - 10
of 352
pro vyhledávání: '"Srivastava, Abhishek. K."'
We describe a 2.5D MHD simulation describing the evolution of cool jets triggered by initial vertical velocity perturbations in the solar chromosphere. We implement random velocity pulses of amplitude 20-50 km/s between 1 Mm and 1.5 Mm, along with va
Externí odkaz:
http://arxiv.org/abs/2306.13322
Autor:
Wang, Tongjiang, Ofman, Leon, Yuan, Ding, Reale, Fabio, Kolotkov, Dmitrii Y., Srivastava, Abhishek K.
Publikováno v:
Space Sci Rev (2021) 217:34
Rapidly decaying long-period oscillations often occur in hot coronal loops of active regions associated with small (or micro-) flares. This kind of wave activity was first discovered with the SOHO/SUMER spectrometer from Doppler velocity measurements
Externí odkaz:
http://arxiv.org/abs/2102.11376
Autor:
Van Doorsselaere, Tom, Srivastava, Abhishek K., Antolin, Patrick, Magyar, Norbert, Farahani, Soheil Vasheghani, Tian, Hui, Kolotkov, Dmitrii Y., Ofman, Leon, Guo, Mingzhe, Arregui, Iñigo, De Moortel, Ineke, Pascoe, David
The heating of the solar chromosphere and corona to the observed high temperatures, imply the presence of ongoing heating that balances the strong radiative and thermal conduction losses expected in the solar atmosphere. It has been theorized for dec
Externí odkaz:
http://arxiv.org/abs/2012.01371
We analyze the characteristics of a quiescent polar prominence using the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). Initially, small-scale barb-like structures are evident on the solar disk, which firstly grow ve
Externí odkaz:
http://arxiv.org/abs/2011.02950
Autor:
McIntosh, Scott W., Leamon, Robert J., Egeland, Ricky, Dikpati, Mausumi, Altrock, Richard C., Banerjee, Dipankar, Chatterjee, Subhamoy, Srivastava, Abhishek K., Velli, Marco
We investigate the occurrence of the "extended solar cycle" (ESC) as it occurs in a host observational data spanning 140 years. Investigating coronal, chromospheric, photospheric and interior diagnostics we develop a consistent picture of solar activ
Externí odkaz:
http://arxiv.org/abs/2010.06048
Autor:
Rast, Mark P., González, Nazaret Bello, Rubio, Luis Bellot, Cao, Wenda, Cauzzi, Gianna, DeLuca, Edward, De Pontieu, Bart, Fletcher, Lyndsay, Gibson, Sarah E., Judge, Philip G., Katsukawa, Yukio, Kazachenko, Maria D., Khomenko, Elena, Landi, Enrico, Pillet, Valentin Martínez, Petrie, Gordon J. D., Qiu, Jiong, Rachmeler, Laurel A., Rempel, Matthias, Schmidt, Wolfgang, Scullion, Eamon, Sun, Xudong, Welsch, Brian T., Andretta, Vincenzo, Antolin, Patrick, Ayres, Thomas R., Balasubramaniam, K. S., Ballai, Istvan, Berger, Thomas E., Bradshaw, Stephen J., Carlsson, Mats, Casini, Roberto, Centeno, Rebecca, Cranmer, Steven R., DeForest, Craig, Deng, Yuanyong, Erdélyi, Robertus, Fedun, Viktor, Fischer, Catherine E., Manrique, Sergio J. González, Hahn, Michael, Harra, Louise, Henriques, Vasco M. J., Hurlburt, Neal E., Jaeggli, Sarah, Jafarzadeh, Shahin, Jain, Rekha, Jefferies, Stuart M., Keys, Peter H., Kowalski, Adam F., Kuckein, Christoph, Kuhn, Jeffrey R., Liu, Jiajia, Liu, Wei, Longcope, Dana, McAteer, R. T. James, McIntosh, Scott W., McKenzie, David E., Miralles, Mari Paz, Morton, Richard J., Muglach, Karin, Nelson, Chris J., Panesar, Navdeep K., Parenti, Susanna, Parnell, Clare E., Poduval, Bala, Reardon, Kevin P., Reep, Jeffrey W., Schad, Thomas A., Schmit, Donald, Sharma, Rahul, Socas-Navarro, Hector, Srivastava, Abhishek K., Sterling, Alphonse C., Suematsu, Yoshinori, Tarr, Lucas A., Tiwari, Sanjiv, Tritschler, Alexandra, Verth, Gary, Vourlidas, Angelos, Wang, Haimin, Wang, Yi-Ming, NSO, project, DKIST, scientists, DKIST instrument, Group, the DKIST Science Working, Community, the DKIST Critical Science Plan
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of the Sun and its atmosphere. The first-light DKIST images, released pu
Externí odkaz:
http://arxiv.org/abs/2008.08203
We study the recurring jets near AR11176 during the period 2011 March 31 17:00 UT to April 1 05:00 UT using observations from the Atmospheric Imaging Assembly (AIA) on board Solar Dynamics Observatory (SDO). Mini-filaments (mini-filament1 & 2) are fo
Externí odkaz:
http://arxiv.org/abs/2001.11702
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In this paper, we describe the kinematical and evolutionary properties of the impulsive cool jets in the solar atmosphere using numerical simulation by Godunov-type PLUTO code at two different strength of the quiet-Sun magnetic field (B=56, 112 Gauss
Externí odkaz:
http://arxiv.org/abs/1908.11560
We observed quiescent coronal loops using multi-wavelength observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) on 2016 April 13. The flows at the footpoints of such loop systems are studied using spec
Externí odkaz:
http://arxiv.org/abs/1908.02865