SOLAR SPECTROPOLARIMETER FOR SPACE WEATHER FORECAST

We propose a project of the meter wavelength range solar spectropolarimeter designed for a ground-based network developing for space weather forecast. The Software-Defined Radio (SDR) solution is chosen to meet such instrument network requirements as specification identity, low cost, possibility of controlling and transmitting data remotely via the Internet. Along with these requirements, the proposed SDR solution allows us to measure Stokes I and V easily, which contrasts the proposed instrument with e-CALLISTO network spectropolarimeters, most of which can record only one linear polarization. Deployment of such instruments at various longitudes will allow continuous observation of type II bursts, often related to coronal mass ejections (CMEs) — the most geoeffective solar activity events that affect the space weather significantly.

Download Full-text

The Tor Vergata Synoptic Solar Telescope (TSST): A robotic, compact facility for solar full disk imaging

Journal of Space Weather and Space Climate ◽

10.1051/swsc/2020061 ◽

2020 ◽

Vol 10 ◽

pp. 58

Author(s):

Luca Giovannelli ◽

Francesco Berrilli ◽

Daniele Calchetti ◽

Dario Del Moro ◽

Giorgio Viavattene ◽

...

Keyword(s):

Solar Atmosphere ◽

Space Weather ◽

Coronal Mass Ejections ◽

Low Cost ◽

Optical Filter ◽

Solar Telescope ◽

The Sun ◽

Weather Events ◽

Line Observation ◽

Full Disk

By the continuous multi-line observation of the solar atmosphere, it is possible to infer the magnetic and dynamical status of the Sun. This activity is essential to identify the possible precursors of space weather events, such as flare or coronal mass ejections. We describe the design and assembly of TSST (Tor Vergata Synoptic Solar Telescope), a robotic synoptic telescope currently composed of two main full-disk instruments, a Hα telescope and a Potassium (KI D1) magneto-optical filter (MOF)-based telescope operating at 769.9 nm. TSST is designed to be later upgraded with a second MOF channel. This paper describes the TSST concepts and presents the first light observation carried out in February 2020. We show that TSST is a low-cost robotic facility able to achieve the necessary data for the study of precursors of space weather events (using the magnetic and velocity maps by the MOF telescope) and fast flare detection (by the Hα telescope) to support Space Weather investigation and services.

Download Full-text

Investigation of Drift Rate of Solar Radio Burst Type II due to Coronal Mass Ejections Phenomenon

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.48.146 ◽

2015 ◽

Vol 48 ◽

pp. 146-154 ◽

Cited By ~ 1

Author(s):

N.H. Zainol ◽

Zety Sharizat Hamidi ◽

N.N.M. Shariff ◽

S. Arifin ◽

C. Monstein

Keyword(s):

Radio Burst ◽

Coronal Mass Ejections ◽

Solar Radio ◽

Drift Rate ◽

Plasma Frequency ◽

Low Cost ◽

Solar Radio Burst ◽

Type Ii ◽

Langmuir Waves ◽

Low Drift

The formation of detected solar radio burst type II occurred was captured using Compound Astronomical Low Cost Frequency Spectrometer Transportable Observatory (CALLISTO) system which gives a better resolution of a wonderful image than other countries. The phenomenon was found on 2nd November 2014 at 09:39 [UT] in Switzerland. CALLISTO spectrometer device detects and traces a Coronal Mass Ejections (CMEs) phenomenon that causes the occurrence of the solar burst type II. As it happened, the drift rate of the solar radio burst Type II is calculated and discussed in details. Plasma frequency (fp), Langmuir waves and type II radiation relates each other in the establishment of this phenomenon. This paper presents a study of drift rate selected event of solar radio burst type II based on CMEs. The drift rate at this moment was about 3.2 MHz/s which has low drift rate thus the velocity OF THE CMEs was just about 695 km/s shown from NOAA.

Download Full-text

Optical instrumentation for chromospheric monitoring during solar cycle 25 at Paris and Côte d’Azur observatories

Journal of Space Weather and Space Climate ◽

10.1051/swsc/2020032 ◽

2020 ◽

Vol 10 ◽

pp. 31

Author(s):

Jean-Marie Malherbe ◽

Thierry Corbard ◽

Kevin Dalmasse

Keyword(s):

Solar Activity ◽

Solar Cycle ◽

Space Weather ◽

Coronal Mass Ejections ◽

Calibration Method ◽

Line Profiles ◽

Short Term ◽

Optical Instruments ◽

Dynamic Events

We present the observing program proposed by Paris and Côte d’Azur Observatories for monitoring solar activity during the upcoming cycle 25 and providing near real time images and movies of the chromosphere for space-weather research and applications. Two optical instruments are fully dedicated to this task and we summarize their capabilities. Short-term and fast-cadence observations of the chromosphere will be performed automatically at Calern observatory (Côte d’Azur), where dynamic events, as flare development, Moreton waves, filament instabilities and Coronal Mass Ejections onset, will be tracked. This new set of telescopes will operate in 2021 with narrow bandpass filters selecting Hα and CaII K lines. We present the instrumental design and a simulation of future images. At Meudon, the Spectroheliograph is well adapted to the long-term and low-cadence survey of chromospheric activity by recently improved and optimized spectroscopic means. Surface scans deliver daily (x, y, λ) datacubes of Hα, CaII K and CaII H line profiles. We describe the nature of available data and emphasize the new calibration method of spectra.

Download Full-text

COMMISSION 10: SOLAR ACTIVITY

Proceedings of the International Astronomical Union ◽

10.1017/s1743921308025350 ◽

2008 ◽

Vol 4 (T27A) ◽

pp. 79-103

Author(s):

James A. Klimchuk ◽

Lidia van Driel-Gesztelyi ◽

Carolus J. Schrijver ◽

Donald B. Melrose ◽

Lyndsay Fletcher ◽

...

Keyword(s):

Solar Activity ◽

Coronal Mass Ejection ◽

Space Weather ◽

Coronal Mass Ejections ◽

Solar Physics ◽

Scientific Progress ◽

Magnetic Clouds ◽

Exciting Time ◽

Mass Ejection ◽

Coronal Dimming

Commission 10 deals with solar activity in all of its forms, ranging from the smallest nanoflares to the largest coronal mass ejections. This report reviews scientific progress over the roughly two-year period ending in the middle of 2008. This has been an exciting time in solar physics, highlighted by the launches of the Hinode and STEREO missions late in 2006. The report is reasonably comprehensive, though it is far from exhaustive. Limited space prevents the inclusion of many significant results. The report is divided into the following sections: Photosphere and chromosphere; Transition region; Corona and coronal heating; Coronal jets; flares; Coronal mass ejection initiation; Global coronal waves and shocks; Coronal dimming; The link between low coronal CME signatures and magnetic clouds; Coronal mass ejections in the heliosphere; and Coronal mass ejections and space weather. Primary authorship is indicated at the beginning of each section.

Download Full-text

Commission 10: Solar Activity

Proceedings of the International Astronomical Union ◽

10.1017/s1743921306004388 ◽

2005 ◽

Vol 1 (T26A) ◽

pp. 75-88

Author(s):

Donald B. Melrose ◽

James A. Klimchuk ◽

A.O. Benz ◽

I.J.D. Craig ◽

N. Gopalswamy ◽

...

Keyword(s):

Solar Activity ◽

Space Weather ◽

Coronal Mass Ejections ◽

Solar Flares ◽

Interplanetary Space ◽

Coronal Loops ◽

Theoretical Concepts ◽

Near Earth Space ◽

Solar Observations ◽

Extensive List

AbstractCommission 10 aims at the study of various forms of solar activity, including networks, plages, pores, spots, fibrils, surges, jets, filaments/prominences, coronal loops, flares, coronal mass ejections (CMEs), solar cycle, microflares, nanoflares, coronal heating etc., which are all manifestation of the interplay of magnetic fields and solar plasma. Increasingly important is the study of solar activities as sources of various disturbances in the interplanetary space and near-Earth “space weather”.Over the past three years a major component of research on the active Sun has involved data from the RHESSI spacecraft. This review starts with an update on current and planned solar observations from spacecraft. The discussion of solar flares gives emphasis to new results from RHESSI, along with updates on other aspects of flares. Recent progress on two theoretical concepts, magnetic reconnection and magnetic helicity is then summarized, followed by discussions of coronal loops and heating, the magnetic carpet and filaments. The final topic discussed is coronal mass ejections and space weather.The discussions on each topic is relatively brief, and intended as an outline to put the extensive list of references in context.The review was prepared jointly by the members of the Organizing Committee, and the names of the primary contributors to the various sections are indicated in parentheses.

Download Full-text

Prediction of modern geological processes in the territory of Russia and CIS countries in the early XXI century

Геоэкология Инженерная геология Гидрогеология Геокриология ◽

10.31857/s0869-78092019160-69 ◽

2019 ◽

pp. 60-69

Author(s):

I. V. Mal’neva

Keyword(s):

Solar Activity ◽

Open Access ◽

Atmospheric Circulation ◽

Northern Hemisphere ◽

Space Weather ◽

Climatic Changes ◽

The Internet ◽

Geological Processes ◽

Cis Countries

The paper considers the modern problems in prediction of hazardous geological processes in the XXI century. It is noted that the peculiarities of the prediction of the most hazardous geological processes (landslides, mudflows, etc.) are connected with global climatic changes and a technogenic factor. The assessment of climatic changes and the most largest catastrophic disasters was carried out with use of the typification of atmospheric circulation in the Northern hemisphere, developed by B. L. Dzerdzeevskii. The data of the typification for the period from 1899 to 2017 can be found on the Internet website www. atmospheric-circulation.ru in open access. The major disasters are considered that caused an activation of landslides and mudflows. The interaction of natural and technogenic factors is described during these disasters. The prediction took into consideration the changes in solar activity and features of space weather.

Download Full-text

Space Weather: The Significance of e-CALLISTO (Malaysia) as One of Contributor of Solar Radio Burst due to Solar Activity

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.26.37 ◽

2014 ◽

Vol 26 ◽

pp. 37-44 ◽

Cited By ~ 2

Author(s):

Zety Sharizat Hamidi ◽

N.N.M. Shariff ◽

C. Monstein ◽

Z.A. Ibrahim

Keyword(s):

Solar Activity ◽

Space Weather ◽

Low Cost ◽

Science Research ◽

Activity Data ◽

Solar Burst ◽

Wide Range ◽

Solar Bursts ◽

Earth’S Climate ◽

The Impact

The impact of solar activities indirectly affected the conditions of earth's climate and space weather in general. In this work, we will highlight a low cost project, however, potentially gives a high impact through a dedicated long-term and one of the most successful space weather project. This research is a part of an initiative of the United Nations together with NASA in order to support developing countries participating in ‘Western Science’ research. At the beginning of 2007, the objective to monitor the solar activities (solar flares and Coronal Mass Ejections) within 24 hours all over the world has positively turned to reality. Realize how important for us to keep doing a research about the solar bursts, by using the new radio spectrometer, CALLISTO. This research is not only hoping to give a knowledge to the people about how the solar bursts are produced, the characteristics of every type of solar burst at the wide range (45 MHz to 870 MHz) but also the effect of the solar burst toward the Earth. By using the same CALLISTO spectrometer within the 45-870 MHz, designing and leading by Christian Monstein from ETH Zurich, Switzerland, this research project is the one of successful project under ISWI program. Malaysia becomes the 19th countries that involve this research. One of the advantages to start the solar monitoring in Malaysia is because our strategic location as equator country that makes possible to observing a Sun for 12 hours daily throughout a year. We strongly believe that Malaysia as one of contributor of solar activity data through E-CALLISTO network. This is a very good start for developing a radio astronomy in Malaysia.

Download Full-text