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Understanding Weak Impulsive Narrowband Quiet Sun Emissions (WINQSEs)

Published online by Cambridge University Press:  28 September 2023

Divya Oberoi Open the ORCID record for Divya Oberoi [Opens in a new window] ,
Surajit Mondal ,
Rohit Sharma ,
Shabbir Bawaji ,
Ujjaini Alam  and
Ayan Biswas
Divya Oberoi
Affiliation:
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India
Surajit Mondal
Affiliation:
New Jersey Institute of Technology, Newark, NJ, USA
Rohit Sharma
Affiliation:
Fachhochschule Nordwestschweiz, Bahnhofstrasse 6, 5210 Windisch, Switzerland
Shabbir Bawaji
Affiliation:
e4rTM, ThoughtWorks, Pune, India
Ujjaini Alam
Affiliation:
e4rTM, ThoughtWorks, Pune, India
Ayan Biswas
Affiliation:
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India Dept. of Physics, Engg. Physics & Astronomy, Queen’s Univ., Kingston, Ontario, Canada Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada
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Abstract

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The confluence of data from the Murchison Widefield Array and an imaging pipeline tailored for spectroscopic snapshot images of the Sun at low radio frequencies have led to enormous improvements in the imaging quality of the Sun. These developments have lowered the detection thresholds by up to two orders of magnitude as compared to earlier studies, and have enabled the discovery of Weak Impulsive Narrowband Quiet Sun Emissions (WINQSEs). Their spatial distribution and various other properties are consistent with being the radio signatures of coronal nanoflares hypothesized by Parker (1988) to explain coronal heating in the quiet Sun emissions. We present the status of the multiple projects we have been pursuing to improve the detection and characterisation of WINQSEs, ranging from looking for them in multiple independent datasets using independent detection techniques to looking for their counter parts to estimate the energy associated with them and understanding their morphologies.

Keywords

Sun: coronaSun: radio radiation
Type
Poster Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S372: The Era of Multi-Messenger Solar Physics , August 2022 , pp. 121 - 122
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

References

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