Filling Factors of Sunspots in SODISM Images
Journal Title: Annals of Emerging Technologies in Computing - Year 2019, Vol 3, Issue 2
Abstract
The calculated filling factors (FFs) for a feature reflect the fraction of the solar disc covered by that feature, and the assignment of reference synthetic spectra. In this paper, the FFs, specified as a function of radial position on the solar disc, are computed for each image in a tabular form. The filling factor (FF) is an important parameter and is defined as the fraction of area in a pixel covered with the magnetic field, whereas the rest of the area in the pixel is field-free. However, this does not provide extensive information about the experiments conducted on tens or hundreds of such images. This is the first time that filling factors for SODISM images have been catalogued in tabular formation. This paper presents a new method that provides the means to detect sunspots on full-disk solar images recorded by the Solar Diameter Imager and Surface Mapper (SODISM) on the PICARD satellite. The method is a totally automated detection process that achieves a sunspot recognition rate of 97.6%. The number of sunspots detected by this method strongly agrees with the NOAA catalogue. The sunspot areas calculated by this method have a 99% correlation with SOHO over the same period, and thus help to calculate the filling factor for wavelength (W.L.) 607nm.
Authors and Affiliations
Amro F. Alasta, Abdrazag Algamudi, Fatma Almesrati, Mustapha Meftah, Rami Qahwaji
Keywords
Related Articles
- EP ID EP497400
- DOI 10.33166/AETiC.2019.02.001
- Views 61
- Downloads 0
Survey on Internet of Things (IoT) for Different Industry Environments
Internet of Things (IoT) provides an opportunity to build powerful applications and computing systems by using wireless communication and radio frequency identification (RFID), mobile, wired and wireless sensor device. I...
Comparing the Complexity of Two Network Architectures
A Service Provider has different methods to provide a VPN service to its customers. But which method is the least complex to implement? In this paper, two architectures are described and analysed. Based on the analyses,...
Cultural, Economic and Societal Impacts on Users’ Behaviour and Mobile Broadband Adoption Trends
The diverse range of Internet enabled devices both mobile and fixed has not only impacted the global economy but the very fabric of human communications and lifestyles. The ease of access and lowered cost has enabled hit...
Atomic Cross-chain Swaps: Development, Trajectory and Potential of Non-monetary Digital Token Swap Facilities
Since the introduction of Bitcoin in 2008, many other cryptocurrencies have been introduced and gained popularity. Lack of interoperability and scalability amongst these cryptocurrencies was - and still is - acting as a...
Hardening CISCO Devices based on Cryptography and Security Protocols - Part One: Background Theory
Network Security is a vital part of any corporate and enterprise network. Network attacks greatly compromise not only the sensitive data of the consumers but also cause outages to these networks. Thus inadequately protec...