Zobrazeno 1 - 10
of 629
pro vyhledávání: '"ASCHWANDEN, M."'
Autor:
Grant, S. D. T., Jess, D. B., Zaqarashvili, T. V., Beck, C., Socas-Navarro, H., Aschwanden, M. J., Keys, P. H., Christian, D. J., Houston, S. J., Hewitt, R. L.
Publikováno v:
Nature Physics, 14, 480-483 (2018)
Magneto-hydrodynamic (MHD) Alfv\'en waves have been a focus of laboratory plasma physics and astrophysics for over half a century. Their unique nature makes them ideal energy transporters, and while the solar atmosphere provides preferential conditio
Externí odkaz:
http://arxiv.org/abs/1810.07712
Parker's coronal braiding and nanoflaring scenario predicts the development of tangential discontinuities and highly misaligned magnetic field lines, as a consequence of random buffeting of their footpoints due to the action of sub-photospheric conve
Externí odkaz:
http://arxiv.org/abs/1808.05269
Publikováno v:
The Astrophysical Journal 826:61 (18 pp), 2016 July 20
The aim of this study is to explore the suitability of chromospheric images for magnetic modeling of active regions. We use high-resolution images (0.1") from the Interferometric Bidimensional Spectrometer (IBIS) in the Ca II 8542 A line, the Rapid O
Externí odkaz:
http://arxiv.org/abs/1602.02119
Publikováno v:
Solar Physics, Vol. 290, Issue 10, pp. 2733-2763; 2015 October 21
We compare the ability of 11 Differential Emission Measure (DEM) forward-fitting and inversion methods to constrain the properties of active regions and solar flares by simulating synthetic data using the instrumental response functions of SDO/AIA, S
Externí odkaz:
http://arxiv.org/abs/1509.07546
Publikováno v:
The Astrophysical Journal, Vol. 802, Issue 1, 53 (20pp); 2015 March 20
We present the second part of a project on the global energetics of solar flares and CMEs that includes about 400 M- and X-class flares observed with AIA/SDO during the first 3.5 years of its mission. In this Paper II we compute the differential emis
Externí odkaz:
http://arxiv.org/abs/1502.05941
Autor:
Awasthi, A. K., Jain, R., Gadhiya, P. D., Aschwanden, M. J., Uddin, W., Srivastava, A. K., Chandra, R., Gopalswamy, N., Nitta, N., Yashiro, S., Manoharan, P. K., Choudhary, D. P., Joshi, N. C., Dwivedi, V. C., Mahalakshmi, K.
We study the temporal, spatial and spectral evolution of the M1.8 flare, which occurred in NOAA AR 11195 (S17E31) on 22 April 2011, and explore the underlying physical processes during the precursors and their relation to the main phase. The study of
Externí odkaz:
http://arxiv.org/abs/1310.6029
We study the association of solar flares with coronal mass ejections (CMEs) during the deep, extended solar minimum of 2007-2009, using extreme-ultraviolet (EUV) and white-light (coronagraph) images from the {\it Solar Terrestrial Relations Observato
Externí odkaz:
http://arxiv.org/abs/1308.1465
Autor:
Nitta, N. V., Aschwanden, M. J., Boerner, P. F., Freeland, S. L., Lemen, J. R., Wuelser, J. -P.
With increasing solar activity since 2010, many flares from the backside of the Sun have been observed by the Extreme Ultraviolet Imager (EUVI) on either of the twin STEREO spacecraft. Our objective is to estimate their X-ray peak fluxes from EUVI da
Externí odkaz:
http://arxiv.org/abs/1304.4163
Autor:
Joshi, N. C., Uddin, W., Srivastava, A. K., Chandra, R., Gopalswamy, N., Manoharan, P. K., Aschwanden, M. J., Choudhary, D. P., Jain, R., Nitta, N. V., Xie, H., Yashiro, S., Akiyama, S., Makela, P., Kayshap, P., Awasthi, A. K., Dwivedi, V. C., Mahalakshmi, K.
We use multiwavelength data from space and ground based instruments to study the solar flares and coronal mass ejections (CMEs) on January 23, 2012 that were responsible for one of the largest solar energetic particle (SEP) events of solar cycle 24.
Externí odkaz:
http://arxiv.org/abs/1303.1251
Autor:
Gopalswamy, N., Xie, H., Mäkelä, P., Yashiro, S., Akiyama, S., Srivastava, W. Uddin. A. K., Joshi, N. C., Chandra, R., Manoharan, P. K., Mahalakshmi, K., Dwivedi, V. C., Awasthi, R. Jain A. K., Nitta, N. V., Aschwanden, M. J., Choudhary, D. P.
Employing coronagraphic and EUV observations close to the solar surface made by the Solar Terrestrial Relations Observatory (STEREO) mission, we determined the heliocentric distance of coronal mass ejections (CMEs) at the starting time of associated
Externí odkaz:
http://arxiv.org/abs/1301.0893