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Flare Prediction Using Photospheric and Coronal Image Data
2018
Solar Physics
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This is the first attempt to predict solar flares using photospheric vector magnetic field data as well as multiple wavelengths of image data from the chromosphere, transition region, and corona. ...
Here we attempt to capture the signature of this mechanism in solar image data of various wavelengths and use these signatures to predict flaring activity. ...
The data used here are courtesy of the GOES team and the NASA/SDO and the HMI and AIA science teams. ...
doi:10.1007/s11207-018-1258-9
fatcat:pswgzof6xndbdpbyv3wpqkhcga
Response of Hinode XRT to quiet Sun, active region and flare plasma
2013
Astronomy and Astrophysics
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We examine the response of the Hinode X-Ray Telescope (XRT), using simultaneous observations with the Hinode Extremeultraviolet Imaging Spectrometer (EIS), for a flare, an active region and a quiet Sun ...
Significant discrepancies between predicted and observed count rates were found and are discussed for the adjacent quiet Sun region and also for the flare. ...
Observed
Predicted
Photospheric 1 Photospheric 2
Coronal 1
Coronal 2
Be thick (Flare 1)
4.75
2.80 (-41%)
3.36 (-29%)
2.30 (-52%)
5.91 (+24%)
Ti poly (Flare 2)
20781
6493 (-69%)
23184 (+12% ...
doi:10.1051/0004-6361/201016346
fatcat:ozfcpdck2najrod5fq5r6gpfea
EVIDENCE FOR COLLAPSING FIELDS IN THE CORONA AND PHOTOSPHERE DURING THE 2011 FEBRUARY 15 X2.2 FLARE:SDO/AIA AND HMI OBSERVATIONS
2012
Astrophysical Journal
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2012 pre-print arXiv:1202.1784v1 fatcat:wk7g7mm4yvfljmumz3ioxqb5zu
These observations are consistent with the "coronal implosion" scenario and its predictions about flare related photospheric field changes. ...
We use high-resolution images of the sun obtained by the SDO/AIA instrument to study the evolution of the coronal loops in a flaring solar active region. ...
These predictions have been tested in the past using either coronal or photospheric observations separately. ...
doi:10.1088/0004-637x/749/1/85
fatcat:jrz7ywymmzhi3pixny7z4ws2vu
Space Weather Related to Solar Eruptions With the ASO-S Mission
2020
Frontiers in Physics
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The Advanced Space-based Solar Observatory (ASO-S) is a mission aiming at exploring solar flares, coronal mass ejections (CMEs), solar magnetic field and their relationships. ...
Our particular interests are currently focused on nowcast of different eruption events, prediction of CME arrivals, forecast of solar flares and the onset of solar eruptions. ...
The near-real-time and high-quality data of ASO-S will be useful to identify active regions, coronal holes, filaments/prominences, and the eruption of flares and CMEs, and to improve the numerical prediction ...
doi:10.3389/fphy.2020.00045
fatcat:s5qqawjbczcnbpife4kwtbe7pa
Photospheric and Coronal Abundances in an X8.3 Class Limb Flare
2018
Astrophysical Journal
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We analyze solar elemental abundances in coronal post-flare loops of an X8.3 flare (SOL2017-09-10T16:06) observed on the west limb on 2017 September 10 near 18 UT using spectra recorded by the Extreme-ultraviolet ...
In some loops of this flare, we find that the abundances appear to be coronal at the loop apices or cusps, but steadily transform from coronal to photospheric as the loop footpoint is approached. ...
The above results suggest that we still have much to learn about the behavior of ions under the explosive conditions of solar flares. ...
doi:10.3847/1538-4357/aaa4f5
fatcat:zdulhbiyuzcnlfgox6jniplwdm
Statistical Study of the Reconnection Rate in Solar Flares Observed withYohkohSXT
2006
Astrophysical Journal
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2006 pre-print arXiv:astro-ph/0605712v1 fatcat:6b2ge3dvufd6xkvhoiibuziszq
We estimate reconnection inflow velocity, coronal Alfven velocity, and reconnection rate using above observed values. ...
We measure physical parameters of 77 flares, such as the temporal scale, the size, and the magnetic flux density and find that the sizes of flares tend to be distributed more broadly as the GOES class ...
Data analysis were carried out on the computer system at the Nobeyama Solar Radio Observatory of the National Astronomical Observatory of Japan and the Solar Data Archive (SODA) analysis server at the ...
doi:10.1086/505320
fatcat:g3c4fkfjavgy3doeg2tqvvexi4
First Flare-related Rapid Change of Photospheric Magnetic Field Observed by Solar Dynamics Observatory
[article]
2011
arXiv
pre-print
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Photospheric magnetic field not only plays important roles in building up free energy and triggering solar eruptions, but also has been observed to change rapidly and permanently responding to the coronal ...
The Helioseismic and Magnetic Imager instrument (HMI) on board the newly launched Solar Dynamics Observatory (SDO) produces seeing-free full-disk vector magnetograms at consistently high resolution and ...
and consistent HMI data. ...
arXiv:1103.0027v1
fatcat:bv27zwmt5jg3lfvrxx6biml4ju
FREE MAGNETIC ENERGY AND FLARE PRODUCTIVITY OF ACTIVE REGIONS
2010
Astrophysical Journal
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In this study, the photospheric vector magnetograms, obtained with the Spectro-Polarimeter of the Solar Optical Telescope on board Hinode, are used as the boundary conditions to extrapolate the three-dimensional ...
nonlinear forcefree (NLFF) coronal magnetic fields. ...
Aimee Norton and Dr. John Britanik for providing SOLIS magnetogram data. SOLIS data is produced cooperatively by NSF/NSO and NASA/LWS. The authors thank Hinode and team for their excellent data set. ...
doi:10.1088/0004-637x/713/1/440
fatcat:oxpu45n535ernmik4be4ssorjm
A New View of the Sun with Hinode Mission
2009
TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES SPACE TECHNOLOGY JAPAN
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Support for the post-launch operation is provided by JAXA and NAOJ (Japan), STFC (U.K.), NASA, ESA, and NSC (Norway). ...
Acknowledgements Hinode is a Japanese mission developed and launched by ISAS/JAXA, collaborating with NAOJ as a domestic partner, NASA and STFC (UK) as international partners. ...
(based on photospheric vector magnetic field data) within our reach. ...
doi:10.2322/tstj.7.tr_2_15
fatcat:yhgt2mm4uvds5cn634rf6ud6uu
Rapid changes of sunspot structure associated with solar eruptions
2010
Proceedings of the International Astronomical Union
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These observations provides evidences, either direct or indirect, for the theory and prediction of Hudson, Fisher & Welsch (2008) that the photospheric magnetic fields would respond to coronal field ...
Using high-resolution Hinode data, we find evidence that only dark fibrils in the "uncombed" penumbral structure disappear while the bright grains evolve to G-band bright points after flares. ...
required to release energy, and made the prediction that after flares, the photospheric magnetic fields become more horizontal. ...
doi:10.1017/s1743921311014943
fatcat:y2t3pronzjfv3o5q2zzo6x2lo4
Structure and evolution of magnetic fields associated with solar eruptions
2015
Research in Astronomy and Astrophysics
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2014 pre-print arXiv:1412.8676v1 fatcat:4cmqlctbdvh6lbtsqoc3hkaw3m
This paper reviews the studies of solar photospheric magnetic field evolution in active regions and its relationship to solar flares. ...
For the second topic, we concentrate on the observations of rapid and irreversible changes of photospheric magnetic field associated with flares, and the implication on the restructuring of three-dimensional ...
Liu Other sunspot classifications are also used to describe the size and complexity of ARs related to flare productivity, and therefore have received attention in the usefulness of solar flare prediction ...
doi:10.1088/1674-4527/15/2/001
fatcat:uvmhbzh4tnasfpcjylzt6gmsi4
Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930
2014
Journal of Geophysical Research - Space Physics
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2016 pre-print arXiv:1605.00367v1 fatcat:grv2otedr5fq5pvface3x6fmhu
The coronal magnetic field data are reconstructed from the photospheric vector magnetograms obtained by the Hinode satellite and using the nonlinear force-free field extrapolation method developed in our ...
The 3-D force-free factor α, 3-D current density, and 3-D magnetic energy density are employed to analyze the coronal data. ...
Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. ...
doi:10.1002/2013ja019157
fatcat:h54hyo6av5hunkuxmzowv2cyxe
OBSERVATIONAL EVIDENCE OF BACK REACTION ON THE SOLAR SURFACE ASSOCIATED WITH CORONAL MAGNETIC RESTRUCTURING IN SOLAR ERUPTIONS
2010
Astrophysical Journal Letters
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2010 pre-print arXiv:1005.4137v1 fatcat:aezvkxivenaunklx7edfs3kqfm
This observational evidence provides support, either directly or indirectly, for the theory and prediction of Hudson, Fisher & Welsch that the photospheric magnetic fields must respond to coronal field ...
and present analysis of new events about flare-related changes of photospheric magnetic fields. ...
required to release energy, and made the prediction that after flares, the photospheric magnetic fields become more horizontal. ...
doi:10.1088/2041-8205/716/2/l195
fatcat:had6kesbmjeyrgzj7hsdezuuka
Solar weather monitoring
2005
Annales Geophysicae
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Space Weather nowcasting and forecasting require solar observations because geoeffective disturbances can arise from three types of solar phenomena: coronal mass ejections (CMEs), flares and coronal holes ...
They come from space missions and ground observatories and range from sequences of dopplergrams, magnetograms, white-light, chromospheric, coronal, coronagraphic and radio images, to irradiance and in-situ ...
The authors thank the anonymous referees for their numerous comments and suggestions for improvement. Topical Editor R. J. Forsyth thanks J. M. Kunches and I. G. ...
doi:10.5194/angeo-23-3149-2005
fatcat:cwazcpaq4zatthc7n7jhi3q6cy
The Photospheric Vortex Flows during a Solar Flare
2017
Astrophysical Journal Letters
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Using observations from the Helioseismic and Magnetic Imager on board the Solar Dynamic Observatory (SDO), we found one counterclockwise and two clockwise vortex flows on the photosphere in the NOAA active ...
At these vortices, the impulsive and irreversible change in the photospheric vector magnetic field were detected. ...
The NASA/SDO data used here are courtesy of the HMI and AIA science teams. We dedicate this article to the memory of Professor Yunchun Jiang, who passed away before this manuscript was completed. ...
doi:10.3847/2041-8213/aa960e
fatcat:vtvs5yi4izfvdkajaavuz5fi6m
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