Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal Jurnal Sains Dirgantara
Muhamad Zamzam Nurzaman
Pusat Sains Antariksa, LAPAN
Education

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
DETEKSI OTOMATIS DAERAH TERANG DI SISI JAUH MATAHARI UNTUK PREDIKSI KEMUNCULAN BINTIK Muhamad Zamzam Nurzaman; Johan Muhamad; Rasdewita Kesumaningrum; Santi Sulistiani; Ayu Dyah Pangestu
Jurnal Sains Dirgantara Vol 18, No 2 (2021)
Publisher : Lembaga Penerbangan dan Antariksa Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.jsd.2020.v18.a3471

Abstract

Active regions that responsible to flare occurrences often appear at east limb as mature active regions. Therefore, we use EUVI instrument onboard STEREO-A spacecraft to observe far-side extreme ultra violet (EUV) for the automatic detection system. The procedure running on the system is by combining the latest STEREO/EUVI and the SDO/AIA data into a single composite heliographic coordinate system map. Active regions are detected based on their intensities on the heliographic map and their duration after they are detected. The program has successfully detected far-side bright-regions in an automatically  near real-time system. 85 % of active regions that have been detected for more than 4 days appear in the east limb as sunspots. On the other hand, bright-regions that have detected between 2-3 days develop to be plagues or decay before reaching the east limb. We find that the different between the mean intensities of the bright-regions that develop to sunspot and no-sunspot regions is about 200 DN//s, which is insignificant to determine the threshold. 
Co-Authors Ayu Dyah Pangestu Johan Muhamad Rasdewita Kesumaningrum Santi Sulistiani