Results 61 to 70 of about 2,926 (125)

Dynamics of Subsurface Flows in Solar Active Regions during the 2024 May Storm

The Astrophysical Journal
In 2024 May, the Sun exhibited intense magnetic activity, marked by numerous high-intensity flares resulting from the interaction and merging of NOAA active regions (ARs) 13664 and 13668 in the southern hemisphere and AR 13663 in the northern hemisphere.
B. Lekshmi, Sushanta Tripathy, Kiran Jain, Alexei Pevtsov   +3 more
doaj   +1 more source

Generation of twist on magnetic flux tubes at the base of the solar convection zone

, 2012
Using two-dimensional magnetohydrodynamics calculations, we investigate a twist gen- eration mechanism on a magnetic flux tube at the base of the solar convection zone based on the idea of Choudhuri, 2003, Sol.
Hotta, H., Yokoyama, T.
core   +1 more source

System-Level Mathematical Macro-Models of Logic MEMS Gates

Доклады Белорусского государственного университета информатики и радиоэлектроники
The relevance of the study is due to the rapid development of microelectromechanical systems (MEMS), which are used as logic elements due to low power consumption, high reliability and the ability to reprogram during operation.
А. А. Solovev, E. F. Pevtsov, V. A. Kolchuzhin   +2 more
doaj   +1 more source

Effectiveness of Search for Unrelated Donor of Hematopoietic Stem Cells using Russian System Bone Marrow Donor Search: Experience of RM Gorbacheva Scientific Research Institute of Pediatric Hematology and Transplantation

Клиническая онкогематология, 2017
Background & Aims. The key condition for allogeneic hematopoietic stem cell transplantation (allo-HSCT) is the presence of HLA-compatible related or unrelated donor.
O. A. Makarenko, A. L. Alyanskii, N. E. Ivanova, Maksim Anatol’evich Kucher, E. V. Babenko, M. A. Estrina, D. E. Pevtsov, A. A. Golovacheva, E. V. Kuz’mich, B. V. Afanas’ev   +9 more
doaj   +1 more source

Global Twist of Sunspot Magnetic Fields Obtained from High Resolution Vector Magnetograms

, 2009
The presence of fine structures in the sunspot vector magnetic fields has been confirmed from Hinode as well as other earlier observations. We studied 43 sunspots based on the data sets taken from ASP/DLSP, Hinode (SOT/SP) and SVM (USO).
Bao, Choudhuri, Cuperman, Elmore, Hagino, Hagino, Hahn, Harvey, Ichimoto, K. Sankarasubramanian, Longcope, Nandy, P. Venkatakrishnan, Parker, Pevtsov, Pevtsov, Pevtsov, Rachkowsky, Sakurai, Sakurai, Sanjiv Kumar Tiwari, Sankarasubramanian, Sankarasubramanian, Severnyi, Su, Tiwari, Tiwari, Tiwari, Unno   +28 more
core   +1 more source

The Photospheric Poynting Flux and Coronal Heating [PDF]

, 2014
Some models of coronal heating suppose that convective motions at the photosphere shuffle the footpoints of coronal magnetic fields and thereby inject sufficient magnetic energy upward to account for observed coronal and chromospheric energy losses in ...
Welsch, B. T.
core   +1 more source

Empirical Modeling of Radiative versus Magnetic Flux for the Sun-as-a-Star

, 2010
We study the relationship between full-disk solar radiative flux at different wavelengths and average solar photospheric magnetic-flux density, using daily measurements from the Kitt Peak magnetograph and other instruments extending over one or more ...
Chapman, Gary, Martens, Petrus C. H., Nandy, Dibyendu, Preminger, Dora   +3 more
core   +1 more source

Reexamining the Power-law Relationship between Global Solar X-Ray Luminosity and Total Unsigned Magnetic Flux

The Astrophysical Journal
The mechanism heating the solar corona remains unclear but is generally hypothesized to involve magnetic fields. One probe of this hypothesis is a statistical study relating coronal emission to magnetic flux. A. A. Pevtsov et al.
Keiji Yoshimura, Aki Takeda, Dana W. Longcope   +2 more
doaj   +1 more source

The Evolution of Sunspot Magnetic Fields Associated with a Solar Flare

, 2011
Solar flares occur due to the sudden release of energy stored in active-region magnetic fields. To date, the pre-cursors to flaring are still not fully understood, although there is evidence that flaring is related to changes in the topology or ...
A. Canou, A. Lagg, A.A. Pevtsov, A.D. Crouch, B. Schmieder, C. Liu, C.H. Mandrini, C.J. Schrijver, C.J. Schrijver, C.J. Schrijver, D. Shaun Bloomfield, D.M. Rust, D.M. Rust, E.R. Priest, G. Petrie, G.A. Gary, H. Wang, H. Wang, H. Zirin, H.S. Hudson, J. Li, J.J. Sudol, K. Tanaka, K.D. Leka, K.D. Leka, M.J. Aschwanden, M.K. Georgoulis, P. Charbonneau, P.A. Conlon, P.A. Conlon, P.T. Gallagher, Peter T. Gallagher, R. Chandra, R.C. Canfield, R.C. Canfield, R.C. Canfield, R.J. Hewett, S. Régnier, S. Régnier, S. Tsuneta, S.K. Antiochos, S.L. Freeland, Sophie A. Murray, T. Amari, T. Kosugi, T.J. Okamoto, T.R. Metcalf, T.R. Metcalf, T.R. Metcalf, W. Unno, Y. Li, Y. Liu, Y. Su, Y. Suematsu   +53 more
core   +1 more source

Observational Evidence for Coronal Twisted Flux Rope

, 2008
Multi-instrument data sets of NOAA AR10938 on Jan. 16, 2007, (e.g., {\emph{Hinode}}, {\it{STEREO}}, {\it{GOES}}, {\it{MLSO}} and {\it{ISOON}} H$\alpha$) are utilized to study the fine structure and evolution of a magnetic loop system exhibiting multiple ...
Amari, Chae, DeVore, Howard, Kaiser, Li, Linton, Martínez-Sykora, N.-E. Raouafi, Pevtsov, Pneuman, Pojoga, Rust, Schüssler   +13 more
core   +1 more source