multi-wavelength emission during solar flaresarun kumar awasthi (iauwr) cassda school april 20, 2015...
TRANSCRIPT
Arun Kumar Awasthi
Institute of Astronomy University of Wroclaw, Poland
E-mail: [email protected] , [email protected]
Collaborators: Arkadiusz Berlicki, Petr Heinzel, M. Sobotka, Powel Rudawy &
F-Chroma Project Team
April 20, 2015
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015
Multi-wavelength emission during Solar Flares
Acknowledgement: “The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement no. 606862 (F-CHROMA)”
Outline
Photospheric Continuum emission from X6.9 flare of August 09,
2011
Multi-wavelength diagnostics of the precursor phase emission in
Solar flares
Outline
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015
OUTLINE
Overview August 09, 2011 X6.9 flare
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Flare Timeline
An X6.9 flare was observed on August 9, 2011 from various space and ground based facilities covering significant part of electromagnetic spectrum.
This flare occurred in AR11263, located close to the limb and has a sunspot group of magnetic complexity βγδ.
We aim to study the morphological evolution of white light continuum and its association with other wavelength observations.
Start Peak End (UT) ~08:00 08:02 ~10:00
Overview August 09, 2011 X6.9 flare
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015 (2/6)
HMI, AIA, HESSI
Overview August 09, 2011 X6.9 flare
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015 (3/6)
HMI & Coimbra Observations:
Contrast
Ib : Background intensity estimated from taking a mean of intensities covered by a rectangle If : Mean of the intensities of box (of 30 × 30 pixels)
Pre-impulsive phase in Aug 20, 2005 flare Data Analysis and Results
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015 (4/6)
RHESSI
Pre-impulsive phase in Aug 20, 2005 flare Data Analysis and Results
Arun Kumar Awasthi (IAUWR) Precursor emission April 20, 2015 (5/6)
Temporal evolution of flare plasma parameters
Pre-impulsive phase in Aug 20, 2005 flare Data Analysis and Results
Arun Kumar Awasthi (IAUWR) CASSDA School April 20, 2015 (6/6)
MSDP
Observed Spectral profile centered at H-alpha Observed Intensity profiles
Thank you for your attention.