Continuous H-alpha Imaging Network Project (CHAIN) with Ground-based Solar Telescopes for Space Weather Research
نویسندگان
چکیده
It is very important for understanding and prediction of the space weather situation to accurately observe erupting phenomena on the solar surface that are initial boundary conditions of all processes. Therefore, we are preparing to create a world-wide observational network with ground-based solar telescopes that is called as "Continuous H-alpha Imaging Network (CHAIN) project". The aim of this project is 24-hour continuous observation of the three-dimensional velocity fields of filament eruptions and shock-wave structures on the whole solar surface. The Flare Monitoring Telescope (FMT) that was constructed in 1992 at Hida observatory can simultaneously observe the full-disk Sun at different wavelengths around H-alpha absorption line, so we can measure the three-dimensional velocity field of the chromospheric gas motion on the full-disk Sun. We plan to use the FMT-type telescopes for the CHAIN-project. We already selected Peru as the country where the 1st oversea FMT will be installed, and we are preparing the installation aiming to start the operation of the FMT in Peru by the end of 2009 before the maximum phase of the solar cycle 24. On the other hand, we have received several informal offers to participate in the CHAIN project from other countries or institutes. In those countries, Algeria is located in the most suitable longitude in the meaning that it can cover the period between the evening of Japan and the morning of Peru. Then, we intend to actually visit and investigate possible sites in Algeria (Aures area, Tamanrasset area) in May 2008 with being supported by CRAAG of Algeria. Such international cooperation will also promote worldwide spread of the solar physics and space weather research Sommaire. Il est très important pour la compréhension et la prédiction de la situation du météo de l’espace d’observer précisément des phénomènes en éruption sur la surface du Soleil qui sont des conditions aux limites initiales de tous les processus. Par conséquent, nous nous apprêtons à créer dans le monde entier un réseau d’observation avec des télescopes basés au sol solaire et qui est appelé « projet (CHAIN) du réseau d’imagerie H-alpha continu »». L’objectif de ce projet est l’ observation continue de 24 heures du champ des vitesses tridimensionnel des éruptions du filament et les structures de l’onde de choc sur toute la surface solaire. Le télescope de surveillance poussée (FMT) qui a été construit en 1992 à l’observatoire de Hida peut observer simultanément le disque plein du soleil à des différentes longueurs d’onde d’absorption autour de la ligne H-alpha , afin que nous puissions mesurer le champ de vitesse tridimensionnel du mouvement du gaz chromosphérique sur le disque plein du soleil. Nous envisageons d’utiliser les télescopes du type FMT du projet (CHAIN). Nous avons déjà choisi le Pérou comme pays où le premier outre-mer FMT sera installé, et nous nous préparons l’installation visant à commencer l’opération du FMT au Pérou d’ici la fin de l’année 2009 avant la phase maximale du cycle solaire 24. D’autre part, nous avons reçu d’autres pays ou instituts plusieurs offres informelles à participer dans le projet (CHAIN). Dans ces pays, l’Algérie se trouve dans la longitude la plus appropriée dans le sens qu’elle peut couvrir la période entre la soirée du Japon et la matinée du Pérou. Ensuite, nous avons l’intention de visiter et investir les sites possibles en Algérie (région de l’Aurès, région de Tamanrasset) en mai 2008 et soutenus par le CRAAG d’Algérie. Une telle coopération internationale favorisera également la propagation dans le monde entier de la physique solaire et de la recherche de la météo de l’espace.
منابع مشابه
The CHAIN-Project and Installation of Flare Monitoring Telescopes in Developing Countries
The Flare Monitoring Telescope (FMT) was constructed in 1992 at Hida Observatory in Japan to investigate the long-term variation of solar activity and explosive events. It has five solar imaging telescopes that simultaneously observe the full-disk Sun at different wavelengths around the H-alpha absorption line or in different modes. Therefore, the FMT can measure the three-dimensional velocity ...
متن کاملCHAIN-Project and Installation of the Flare Monitoring Telescopes in Developing Countries
The Flare Monitoring Telescope (FMT) was constructed in 1992 at Hida observatory in Japan to investigate the long-term variation of solar activity and explosive events. It has been part of the international coordinated observations program (STEP) since 1991. The FMT consists of five solar imaging telescopes and one guidescope. The five telescopes SIMULTANEOUSLY observe the full-disk Sun at diff...
متن کاملCHAIN-Project and Installation of the Flare Monitoring Telescope in Peru
The Flare Monitoring Telescope (FMT) was constructed in 1992 at Hida observatory in Japan to investigate the long-term variation of solar activity and explosive events (Kurokawa et al. 1995). It has been part of the international coordinated observations program (STEP) since 1991. The FMT consists of five solar imaging telescopes and one guidescope. The five telescopes SIMULTANEOUSLY observe th...
متن کاملSunspots and Coronal Bright Points Tracking using a Hybrid Algorithm of PSO and Active Contour Model
In the last decades there has been a steady increase of high-resolution data, from ground-based and spaceborne solar instruments, and also of solar data volume. These huge image archives require efficient automatic image processing software tools capable of detecting and tracking various features in the solar atmosphere. Results of application of such tools are essential for studies of solar ac...
متن کاملA Multi Objective Fibonacci Search Based Algorithm for Resource Allocation in PERT Networks
The problem we investigate deals with the optimal assignment of resources to the activities of a stochastic project network. We seek to minimize the expected cost of the project include sum of resource utilization costs and lateness costs. We assume that the work content required by the activities follows an exponential distribution. The decision variables of the model are the allocated resourc...
متن کامل