Solar Wind Associated with Near Equatorial Coronal Hole

Present study probes temporal changes in the area and radiative flux of near equatorial coronal hole associated with solar wind parameters such as wind speed, density, magnetic field and temperature. Using high temporal resolution data from SDO/AIA for the two wavelengths 193 Å and 211 Å, area and r...

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Bibliographic Details
Published in:Journal of astrophysics and astronomy 2015-09, Vol.36 (3), p.355-374
Main Authors: Hegde, M., Hiremath, K. M., Doddamani, Vijayakumar H., Gurumath, Shashanka R
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Astroparticles
Bands
Corona
Coronal holes
Density
Flux
High speed
Magnetic fields
Observations and Techniques
Physics
Physics and Astronomy
Solar energy
Solar physics
Solar wind
Wavelengths
Wind power
Wind speed
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Summary:Present study probes temporal changes in the area and radiative flux of near equatorial coronal hole associated with solar wind parameters such as wind speed, density, magnetic field and temperature. Using high temporal resolution data from SDO/AIA for the two wavelengths 193 Å and 211 Å, area and radiative flux of coronal holes are extracted and are examined for the association with high speed solar wind parameters. We find a strong association between different parameters of coronal hole and solar wind. For both the wavelength bands, we also compute coronal hole radiative energy near the earth and it is found to be of similar order as that of solar wind energy. However, for the wavelength 193 Å, owing to almost similar magnitudes of energy emitted by coronal hole and energy due to solar wind, it is conjectured that solar wind might have originated around the same height where 193 Å line is formed in the corona.
ISSN:0250-6335
0973-7758
DOI:10.1007/s12036-015-9338-9