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Detection and characterisation of the solar UV network

Paterson, Rhys L. and Fletcher, Lyndsay and Marshall, Stephen (2015) Detection and characterisation of the solar UV network. In: National Astronomy Meeting 2015, 2015-07-05 - 2015-07-09, Venue Cymru.

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Abstract

When viewed at UV wavelengths (1600 and 1700 Angstroms) there is a network like structure visible upon the solar disk, appearing prominently in active regions but also forming the boundary between granulation cells. The availability of high resolution data from the Solar Dynamic Observatory (SDO) satellite allows us to examine this network in great detail. As such, this work uses several image processing techniques in an attempt to quantify what percentage of the solar disk this 'network' makes up, with current results suggesting that about 30% of the disk is network. Further analysis of these results reveals a monthly fluctuation in the covering percentage and a correlation with the F10.7 flux. Our ongoing work tries to discern whether this variation and correlation has a component related to the network or is simply from the presence of active regions within the detection methods.