Sympathetic flaring with BATSE,GOES, and EIT data |
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| Institution: | 1. SM&A Corporation (East), NASA/GSFC, Mail Code 682.3, Greenbelt, MD 20771, USA;2. NASA/GSFC, Mail Code 682.3, Greenbelt, MD 20771, USA;1. Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125, USA;2. Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, USA;3. Departments of Medicine, Division of Immunobiology and Microbiology, and Molecular Genetics, Larner College of Medicine, University of Vermont, Burlington, VT 05405, USA;4. David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA;5. MRC-University of Glasgow Centre for Virus Research (CVR), Glasgow G61 1QH, UK;6. Department of Surgery and University of Vermont Cancer Center, University of Vermont College of Medicine, 89 Beaumont Avenue, Burlington, VT 05405, USA;7. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA;1. Renal Division, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA;2. Research Service Line, Atlanta Veterans Affairs Health Care System (VAHCS), Decatur, GA, USA;3. Department of Pharmacology and Physiology, Institute for Neuroscience, George Washington University, Washington, DC, USA;4. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA;5. Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, GA, USA;6. Department of Radiology, Emory University School of Medicine, Atlanta, GA, USA;7. Biomarker Core Laboratory, Atlanta VAHCS, Decatur, GA, USA;1. Physical Research Laboratory, Ahmedabad 380009, Gujarat, India;2. ISAS, Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;3. Indian Institute of Science Education and Research, Pune 411008, Maharashtra, India;1. Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India;2. Department of Electronics and Communication Engineering, Tripura University, Agartala 799022, India;1. Astronomy and Meteorology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11488, Egypt;2. Physics Department, Faculty of Science, Helwan University, Ain Helwan, Helwan 11795, Egypt |
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| Abstract: | Sympathetic flaring is defined as the initiation of a solar flare as a result of a transient phenomenon occurring elsewhere on the Sun. Discovery of sympathetic flaring or lack thereof, may lead to a greater understanding of the physics of flare initiation. Knowledge of a mechanism for initiating solar flares would also aid in predicting at least some solar flares. Two studies of sympathetic flaring are presented in this paper. The first part of the paper presents a test for sympathetic flaring in flares observed with the Burst and Transient Source Experiment. A Monte Carlo simulation is used to compare the distribution of solar X-ray flares in time to that expected from a time-varying, Poisson distribution. No evidence for sympathetic flaring is found, though it cannot be ruled out. The X-ray flare data also do not allow discovery of sympathetic flares occurring within 2 min of the initial flare. Because the observations do allow for at least some flares to occur sympathetically, the second part of the paper examines one possible mechanism for initiating flares. The mechanism examined is large-scale coronal transients observed by the SOHO/Extreme Ultraviolet Imaging Telescope: EIT waves. A comparison of the rate of flaring in the interval prior to an EIT wave to the rate of flaring while the wave traverses the solar disk shows no increase in the number of flares due to the EIT wave. |
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