Scaling Relationships of Source Parameters of Inland Crustal Earthquakes in Tectonically Active Regions
Sign Up to like & getrecommendations! Published in 2019 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-019-02160-0
Abstract: We examined the scaling relationships of inland crustal earthquakes occurring in tectonically active regions such as the Japanese Islands. Two important points related to reliable scaling relationships are discussed empirically: the objective estimation of source… read more here.
Keywords: scaling relationships; source; source parameters; crustal earthquakes ... See more keywords
Preflare Dynamics of Microwave and Ultraviolet Emission in Active Regions of the Sun
Sign Up to like & getrecommendations! Published in 2020 at "Astrophysics"
DOI: 10.1007/s10511-020-09630-7
Abstract: This paper is a study of the spatial dynamics of microwave emission (data from the Nobeyama Radioheliograph) from two active regions NOAA 12673 and NOAA 11261 for several hours prior to powerful class M x-ray… read more here.
Keywords: preflare dynamics; dynamics microwave; microwave ultraviolet; active regions ... See more keywords
The Relation Between Magnetic Fields and X-ray Emission for Solar Microflares and Active Regions
Sign Up to like & getrecommendations! Published in 2017 at "Solar Physics"
DOI: 10.1007/s11207-017-1146-8
Abstract: We present the result of a comparison between magnetic field parameters and the intensity of X-ray emission for solar microflares with Geosynchronous Operational Environmental Satellites (GOES) classes from A0.02 to B5.1. For our study, we… read more here.
Keywords: emission solar; pff; ray emission; solar microflares ... See more keywords
A Fractal Analysis of Magnetograms Within Active Regions
Sign Up to like & getrecommendations! Published in 2019 at "Solar Physics"
DOI: 10.1007/s11207-019-1578-4
Abstract: The magnetograms of 16 active regions, observed during June–November 2015, were obtained from the Joint Science Operations Center (JSOC) from the Solar Dynamics Observatory (SDO) using the Helioseismic and Magnetic Imager (HMI) and used to… read more here.
Keywords: field groups; fractal analysis; fractal dimensions; magnetic field ... See more keywords
Reconstructing solar magnetic fields from historical observations
Sign Up to like & getrecommendations! Published in 2019 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936134
Abstract: Context. The axial dipole moments of emerging active regions control the evolution of the axial dipole moment of the whole photospheric magnetic field and the strength of polar fields. Hale’s and Joy’s laws of polarity… read more here.
Keywords: dipole moments; axial dipole; active regions; dipole moment ... See more keywords
Improved detection of far-side solar active regions using deep learning
Sign Up to like & getrecommendations! Published in 2019 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936838
Abstract: Context. The analysis of waves in the visible side of the Sun allows the detection of active regions in the farside through local helioseismology techniques. The knowledge of the magnetism in the whole Sun, including… read more here.
Keywords: improved detection; detection; farside active; detection far ... See more keywords
Modification of “Pressed” Atmospheres in Active Regions of Ultracool Stars
Sign Up to like & getrecommendations! Published in 2017 at "Geomagnetism and Aeronomy"
DOI: 10.1134/s0016793217070271
Abstract: Ultracool stars usually have active regions, which is confirmed by their high-power radiofrequency emission modulated by the star axial rotation. The interpretation of this emission is commonly based on the electron cyclotron maser mechanism realized… read more here.
Keywords: radiofrequency emission; mechanism; ultracool stars; regions ultracool ... See more keywords
Estimates of Current Helicity and Tilt of Solar Active Regions and Joy’s Law
Sign Up to like & getrecommendations! Published in 2020 at "Geomagnetism and Aeronomy"
DOI: 10.1134/s0016793220080149
Abstract: The tilt angle, current helicity and twist of solar magnetic fields can be observed in solar active regions. We carried out estimates of these parameters by two ways. Firstly, we consider the model of turbulent… read more here.
Keywords: estimates current; solar active; current helicity; active regions ... See more keywords
Observational Evidence of Shallow Origins for the Magnetic Fields of Solar Cycles
Sign Up to like & getrecommendations! Published in 2018 at "Frontiers in Astronomy and Space Sciences"
DOI: 10.3389/fspas.2018.00017
Abstract: Observational evidence for the origin of active region magnetic fields has been sought from published information on extended solar cycles, statistical distributions of active regions and ephemeral regions, helioseismology results, positional relationships to supergranules, and… read more here.
Keywords: magnetic fields; helioseismology; evidence; observational evidence ... See more keywords