7
7.0
Jun 30, 2018
06/18
by
Alexey Isavnin
texts
eye 7
favorite 0
comment 0
We present a novel three-dimensional (3D) model of coronal mass ejections (CMEs) that unifies all key evolutionary aspects of CMEs and encapsulates their 3D magnetic field configuration. This fully analytic model is capable of reproducing the global geometrical shape of a CME with all major deformations taken into account, i.e., deflection, rotation, expansion, "pancaking", front flattening and rotational skew. Encapsulation of 3D magnetic structure allows the model to reproduce...
Topics: Physics, Solar and Stellar Astrophysics, Space Physics, Astrophysics
Source: http://arxiv.org/abs/1703.01659
1
1.0
Jan 13, 2022
01/22
by
Christian Moestl; Andreas Weiss; Rachel Bailey; Alexey Isavnin
data
eye 1
favorite 0
comment 0
These are solar wind in situ data arrays in python pickle format suitable for machine learning, i.e. the arrays consist only of numbers, no strings and no datetime objects. See AAREADME_insitu_ML.txt for more explanation. If you use these data for peer reviewed scientific publications, please get in touch concerning usage and possible co-authorship by the authors (C. Möstl, A. J. Weiss, R. L. Bailey, A. Isavnin): christian.moestl@oeaw.ac.at or twitter @chrisoutofspace Made with...
Source: https://figshare.com/articles/dataset/Solar_wind_in_situ_data_suitable_for_machine_learning_python_numpy_arrays_STEREO-A_B_Wind_Parker_Solar_Probe_Ulysses_Venus_Express_MESSENGER/12058065/2
1
1.0
Feb 19, 2022
02/22
by
Christian Moestl; Andreas Weiss; Rachel Bailey; Alexey Isavnin; David Stansby
data
eye 1
favorite 0
comment 0
These are solar wind in situ data arrays in python pickle format suitable for machine learning, i.e. the arrays consist only of numbers, no strings and no datetime objects. See AAREADME_insitu_ML.txt for more explanation. If you use these data for peer reviewed scientific publications, please get in touch concerning usage and possible co-authorship by the authors (C. Möstl, A. J. Weiss, R. L. Bailey, A. Isavnin, D. Stansby): christian.moestl@oeaw.ac.at or twitter @chrisoutofspace Made with...
Source: https://figshare.com/articles/dataset/Solar_wind_in_situ_data_suitable_for_machine_learning_python_numpy_arrays_STEREO-A_B_Wind_Parker_Solar_Probe_Ulysses_Venus_Express_MESSENGER/12058065/5
52
52
Sep 21, 2013
09/13
by
Alexey Isavnin; Emilia K. J. Kilpua; Hannu E. J. Koskinen
texts
eye 52
favorite 0
comment 0
The Grad-Shafranov reconstruction is a method of estimating the orientation (invariant axis) and cross-section of magnetic flux ropes using the data from a single spacecraft. It can be applied to various magnetic structures such as magnetic clouds (MCs) and flux ropes embedded into the magnetopause and in the solar wind. We develop a number of improvements of this technique and show some examples of the reconstruction procedure of interplanetary coronal mass ejections (ICMEs) observed at 1 AU...
Source: http://arxiv.org/abs/1108.1678v1
7
7.0
Jun 29, 2018
06/18
by
Tanja Rollett; Christian Möstl; Alexey Isavnin; Jackie A. Davies; Manuel Kubicka; Ute V. Amerstorfer; Richard A. Harrison
texts
eye 7
favorite 0
comment 0
In this study, we present a new method for forecasting arrival times and speeds of coronal mass ejections (CMEs) at any location in the inner heliosphere. This new approach enables the adoption of a highly flexible geometrical shape for the CME front with an adjustable CME angular width and an adjustable radius of curvature of its leading edge, i.e. the assumed geometry is elliptical. Using, as input, STEREO heliospheric imager (HI) observations, a new elliptic conversion (ElCon) method is...
Topics: Astrophysics, Solar and Stellar Astrophysics
Source: http://arxiv.org/abs/1605.00510
5
5.0
Jun 30, 2018
06/18
by
Erika Palmerio; Emilia K. J. Kilpua; Alexander W. James; Lucie M. Green; Jens Pomoell; Alexey Isavnin; Gherardo Valori
texts
eye 5
favorite 0
comment 0
A key aim in space weather research is to be able to use remote-sensing observations of the solar atmosphere to extend the lead time of predicting the geoeffectiveness of a coronal mass ejection (CME). In order to achieve this, the magnetic structure of the CME as it leaves the Sun must be known. In this article we address this issue by developing a method to determine the intrinsic flux rope type of a CME solely from solar disk observations. We use several well known proxies for the magnetic...
Topics: Solar and Stellar Astrophysics, Astrophysics
Source: http://arxiv.org/abs/1701.08595