RESULTS OF WORK OF NEW SPECTROPOLARIMETER FOR SOLAR RADIO EMISSION OBSERVATIONS IN THE RANGE 50–500 MHZ
Journal Title: Solar-Terrestrial Physics - Year 2019, Vol 5, Issue 3
Abstract
Ground-based observations within meter radio range are of importance for understanding processes occurring in the solar corona. We present concepts, block diagram, and results of first observations of the Solar Spectropolarimeter of Meter Range (SSMD), launched for solar observations in the range 50–500 MHz in April 2016. The main purpose of this work was to develop an up-to-date digital radio spectropolarimeter able to record the full Stokes vector for sporadic solar phenomena taking place in the 50–500 MHz range. We use a crossed log periodic antenna to detect solar radio emission. This antenna can simultaneously obtain horizontal and vertical polarization components. The main part of SSMD is a digital receiver based on an FX correlator architecture. We use the Fast Fourier Transform (FFT) algorithm based on the real-time pipeline circuit to construct amplitude dynamic spectra (intensity vs frequency and time). SSMD has 4608 frequency channels with 97.66 kHz channel bandwidth and 97.66 kHz spacing. Time resolution is 1 s. The spectropolarimeter has a 50–500 MHz range. It can record the full Stokes vector. At present, SSMD observes two of four parameters in regular mode (I and V). We have observational data since 2016. The catalog development is in progress. We plan to improve time and frequency characteristics, record all Stokes parameters, and conduct a calibration. We are working on providing access to the data archive via the Internet.
Authors and Affiliations
Muratova N. O. , Muratov A. A. , Kashapova L. K.
Keywords
Related Articles
- EP ID EP702081
- DOI 10.12737/stp-53201901
- Views 103
- Downloads 0
OBSERVATIONS OF SMALL-SCALE ENERGETIC EVENTS IN THE SOLAR TRANSITION REGION: EXPLOSIVE EVENTS, UV BURSTS, AND NETWORK JETS
In this paper, we review observational aspects of three common small-scale energetic events in the solar transition region (TR), namely TR explosive events, ultraviolet bursts and jets. These events are defined in either...
SHAPE OF SPECTRUM OF GALACTIC COSMIC RAY INTENSITY FLUCTUATIONS
The impact of solar wind plasma on fluxes of galactic cosmic rays (CR) penetrating from the outside into the heliosphere with energies above ~1 GeV leads to temporal variations in the CR intensity in a wide frequency ran...
DIAGNOSTICS OF AURORAL OVAL BOUNDARIES ON THE BASIS OF THE MAGNETOGRAM INVERSION TECHNIQUE
It is shown that the convection reversal boundary is a fundamental parameter of the magnetosphere-ionosphere coupling, which determines a strong analogy between the electrostatic potential of the ionosphere and the equiv...
STUDYING AURORAL ACTIVITY USING THE SME INDEX AT THE MAGNETIC STORM MAIN PHASE DURING CIR AND ICME EVENTS
In this paper, we examine the relationship of the SME index with magnetic storm characteristics and interplanetary medium parameters during the main phase of magnetic storms caused by CIR and ICME events. Over the period...
SOLAR ACTIVITY RESEARCH AT THE BAIKAL ASTROPHYSICAL OBSERVATORY OF ISTP SB RAS
The article presents the main results of solar studies carried out at the Baikal Astrophysical Observatory (BAO) of the Institute of Solar-Terrestrial Physics SB RAS (ISTP SB RAS) for 40 years. It outlines the history of...