Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Mahajan, Sushant S."'
Autor:
Dash, Soumyaranjan, DeRosa, Marc L., Dikpati, Mausumi, Sun, Xudong, Mahajan, Sushant S., Liu, Yang, Hoeksema, J. Todd
Knowledge of the global magnetic field distribution and its evolution on the Sun's surface is crucial for modeling the coronal magnetic field, understanding solar wind dynamics, computing the heliospheric open flux distribution and predicting solar c
Externí odkaz:
http://arxiv.org/abs/2409.15233
Publikováno v:
The Astrophysical Journal, Volume 953, year 2023, Number 1
One of the major sources of perturbation in the solar cycle amplitude is believed to be the emergence of anomalous active regions which do not obey Hale's polarity law and Joy's law of tilt angles. Anomalous regions containing high magnetic flux that
Externí odkaz:
http://arxiv.org/abs/2305.13145
Using time-distance local helioseismology flow maps within 1 Mm of the solar photosphere, we detect inflows toward activity belts that contribute to solar cycle scale variations in near-surface meridional flow. These inflows stretch out as far as 30
Externí odkaz:
http://arxiv.org/abs/2304.02158
Autor:
Nandy, Dibyendu, Banerjee, Dipankar, Bhowmik, Prantika, Brun, Allan Sacha, Cameron, Robert H., Gibson, S. E., Hanasoge, Shravan, Harra, Louise, Hassler, Donald M., Jain, Rekha, Jiang, Jie, Jouve, Laurène, Mackay, Duncan H., Mahajan, Sushant S., Mandrini, Cristina H., Owens, Mathew, Pal, Shaonwita, Pinto, Rui F., Saha, Chitradeep, Sun, Xudong, Tripathi, Durgesh, Usoskin, Ilya G.
Despite investments in multiple space and ground-based solar observatories by the global community, the Sun's polar regions remain unchartered territory - the last great frontier for solar observations. Breaching this frontier is fundamental to under
Externí odkaz:
http://arxiv.org/abs/2301.00010
We measure differential rotation and meridional flow in the Sun's surface shear layer by tracking the motions of the magnetic network seen in magnetograms from SOHO/MDI and SDO/HMI over solar cycles 23, 24, and the start of 25 (1996-2022). We examine
Externí odkaz:
http://arxiv.org/abs/2212.10619
The Sun's axisymmetric flows, differential rotation and meridional flow, govern the dynamics of the solar magnetic cycle and variety of methods are used to measure these flows, each with its own strengths and weaknesses. Flow measurements based on cr
Externí odkaz:
http://arxiv.org/abs/2107.07731
Autor:
Ahmadzadeh, Azim, Aydin, Berkay, Georgoulis, Manolis K., Kempton, Dustin J., Mahajan, Sushant S., Angryk, Rafal A.
We present a case study of solar flare forecasting by means of metadata feature time series, by treating it as a prominent class-imbalance and temporally coherent problem. Taking full advantage of pre-flare time series in solar active regions is made
Externí odkaz:
http://arxiv.org/abs/2103.07542
Autor:
Ahmadzadeh, Azim, Hostetter, Maxwell, Aydin, Berkay, Georgoulis, Manolis K., Kempton, Dustin J., Mahajan, Sushant S., Angryk, Rafal A.
In analyses of rare-events, regardless of the domain of application, class-imbalance issue is intrinsic. Although the challenges are known to data experts, their explicit impact on the analytic and the decisions made based on the findings are often o
Externí odkaz:
http://arxiv.org/abs/1911.09061
We use a well-known deep neural network framework, called Mask R-CNN, for identification of solar filaments in full-disk H-alpha images from Big Bear Solar Observatory (BBSO). The image data, collected from BBSO's archive, are integrated with the spa
Externí odkaz:
http://arxiv.org/abs/1912.02743
Temporal variations in the Suns internal velocity field with a periodicity of about 11 years have been observed over the last four decades. The period of these torsional oscillations and their latitudinal propagation roughly coincides with the period
Externí odkaz:
http://arxiv.org/abs/1803.07758