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
SARD: A YOLOv8-Based System for Solar Active Region Detection with SDO/HMI Magnetograms
Sign Up to like & getrecommendations! Published in 2025 at "Solar Physics"
DOI: 10.1007/s11207-025-02525-w
Abstract: Solar active regions are where sunspots are located and photospheric magnetic fluxes are concentrated, therefore being the sources of energetic eruptions in the solar atmosphere. The detection and statistics of solar active regions have been… read more here.
Keywords: detection; active regions; solar active; active region ... See more keywords
Study of solar energetic particles: their source regions, flares and CMEs during solar cycles 23–24
Sign Up to like & getrecommendations! Published in 2025 at "Indian Journal of Physics"
DOI: 10.1007/s12648-025-03619-8
Abstract: In this work, we examine the association between solar active regions and 152 solar flares, coronal mass ejections, and solar energetic particle (SEP) events over solar cycles 23–24 (1997–2017). The Coordinated Data Analysis Workshops center's… read more here.
Keywords: active regions; magnetically complex; complex active; solar energetic ... See more keywords
A model for heating the super-hot corona in solar active regions
Sign Up to like & getrecommendations! Published in 2024 at "Nature Astronomy"
DOI: 10.1038/s41550-024-02244-5
Abstract: What physical mechanisms heat the outer solar or stellar atmosphere to million-kelvin temperatures is a fundamental but long-standing open question. In particular, the solar corona in active-region cores contains an even hotter component reaching 10 MK,… read more here.
Keywords: coronal loops; model heating; corona; active regions ... 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
Are Solar Active Regions Born with Neutralized Currents?
Sign Up to like & getrecommendations! Published in 2024 at "Research in Astronomy and Astrophysics"
DOI: 10.1088/1674-4527/ad50b6
Abstract: Solar active regions (ARs) are formed by the emergence of current-carrying magnetic flux tubes from below the photosphere. Although for an isolated flux tube the direct and return currents flowing along the tube should balance… read more here.
Keywords: flux; active regions; born neutralized; solar active ... See more keywords
Hemispheric analysis of the magnetic flux in regular and irregular solar active regions
Sign Up to like & getrecommendations! Published in 2024 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stae1604
Abstract: Studying the hemispheric distribution of active regions (ARs) with different magnetic morphology may clarify the features of the dynamo process that is hidden under the photospheric level. The magnetic flux data for 3047 ARs from… read more here.
Keywords: flux; active regions; analysis magnetic; analysis ... See more keywords