C. Monstein
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View article: Developments in Ground-Based Space Weather Monitoring: GIFDS and CALLISTO for Event Analysis
Developments in Ground-Based Space Weather Monitoring: GIFDS and CALLISTO for Event Analysis Open
The International Space Weather Initiative (ISWI) features several instruments, two of which this paper is focusing on: GIFDS and CALLISTO. The original receivers have been further developed aiming a small network of 4 combined stations. M…
View article: Frequency-Scanning Waveguide Antenna for Solar Radio Bursts Detection in the UHF Band
Frequency-Scanning Waveguide Antenna for Solar Radio Bursts Detection in the UHF Band Open
This paper proposes a frequency-scanning antenna designed to operate in the 400 MHz to 800 MHz band for solar radio astronomy applications. It is constructed with perforated metallic walls and cylinders, that form a rectangular leaky waveg…
View article: Characteristics Analysis of Type II Solar Radio Bursts Detected by CALLISTO Spectrometer at The Space Technology Complex (STC), Banting, Malaysia During Ascending Phase of Solar Cycle 25
Characteristics Analysis of Type II Solar Radio Bursts Detected by CALLISTO Spectrometer at The Space Technology Complex (STC), Banting, Malaysia During Ascending Phase of Solar Cycle 25 Open
Within the meter wavelength region, Type II Solar Radio Bursts (SRBs) have been determined to be some of the most significant solar radio emission events. They are produced by magnetohydrodynamic (MHD) shocks generated by solar flares or C…
View article: Dependence of drift rate of radio bursts on frequencies for the period of solar activity 2019-2020
Dependence of drift rate of radio bursts on frequencies for the period of solar activity 2019-2020 Open
In this paper, we calculated the frequency drift rate (df/dt) of radio bursts observed at the minimum of solar activity of the 25th cycle. The observational spectra of radio bursts from the "CALLISTO network" database were used. The calcul…
View article: Exploring solar flares and solar radio bursts associated with β-γ-δ active regions during the ascending phase of the solar cycle 25
Exploring solar flares and solar radio bursts associated with β-γ-δ active regions during the ascending phase of the solar cycle 25 Open
This paper presents an exploration of solar flares and solar radio bursts(SRBs) associated with β-γ-δ class active regions (ARs) during the ascending phase of solar cycle 25 th , spanning from January 2022 to May 2024. The β-γ-δ ARs have c…
View article: Large solar energetic particles and solar radio emissions during Cycle 25. A comparative analysis of trends and characteristics with cycles 23 and 24
Large solar energetic particles and solar radio emissions during Cycle 25. A comparative analysis of trends and characteristics with cycles 23 and 24 Open
View article: Observation of an Extraordinary Type V Solar Radio Burst: Nonlinear Evolution of the Electron Two-Stream Instability
Observation of an Extraordinary Type V Solar Radio Burst: Nonlinear Evolution of the Electron Two-Stream Instability Open
Solar type V radio bursts are associated with type III bursts. Several processes have been proposed to interpret the association, electron distribution, and emission. We present the observation of a unique type V event observed by e-CALLIS…
View article: Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G)
Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G) Open
View article: Radio Signature of the Strong Compression between a Streamer and a Coronal Hole Boundary
Radio Signature of the Strong Compression between a Streamer and a Coronal Hole Boundary Open
We present evidence of the first detection of the radio signature at metric wavelengths of the strong compression between a helmet streamer (HS) and the boundary of a coronal hole (CH) using radio observations from the Callisto MEXICO-LANC…
View article: Low-frequency solar radio type II bursts and their association with space weather events during the ascending phase of solar cycle 25
Low-frequency solar radio type II bursts and their association with space weather events during the ascending phase of solar cycle 25 Open
Type II solar radio bursts are signatures of the coronal shocks and, therefore, particle acceleration events in the solar atmosphere and interplanetary space. Type II bursts can serve as a proxy to provide early warnings of incoming solar …
View article: Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G)
Solar flare observations with the Radio Neutrino Observatory Greenland (RNO-G) Open
The Radio Neutrino Observatory - Greenland (RNO-G) seeks discovery of ultra-high energy neutrinos from the cosmos through their interactions in ice. The science program extends beyond particle astrophysics to include radioglaciology and, a…
View article: Evidence for flare-accelerated particles in large scale loops in the behind-the-limb gamma-ray solar flare of September 29, 2022
Evidence for flare-accelerated particles in large scale loops in the behind-the-limb gamma-ray solar flare of September 29, 2022 Open
We report on the detection of the gamma-ray emission above 100 MeV from the solar flare of September 29, 2022, by Fermi LAT with simultaneous coverage in HXR by Solar Orbiter STIX. The Solar Orbiter-Earth separation was 178° at the time of…
View article: Solar Radio Spectro-polarimeter (50–500 MHz). I. Design, Development, and Characterization of a Cross-polarized, Log-periodic Dipole Antenna
Solar Radio Spectro-polarimeter (50–500 MHz). I. Design, Development, and Characterization of a Cross-polarized, Log-periodic Dipole Antenna Open
The Zeeman effect has been routinely used to image and quantify the solar photospheric magnetic field (B). Such a direct measuring technique is not yet available for the corona (Lin et al. 2004). Since almost all transient nonthermal radio…
View article: Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME
Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME Open
View article: Separating the effects of earthside and far side solar events. A case study
Separating the effects of earthside and far side solar events. A case study Open
On 8 November 2013 a halo-type coronal mass ejection (CME) was observed,\ntogether with flares and type II radio bursts, but the association between the\nflares, radio bursts, and the CME was not clear. Our aim is to identify the\norigin o…
View article: Observation of Solar Radio Bursts Using E-CallistoSystem
Observation of Solar Radio Bursts Using E-CallistoSystem Open
A CALLISTO system was set up at the Arthur C Clarke Institute and connected to the e-CALLISTO global network which observes the solar radio bursts in 24 hours. CALLISTO is the foremost observation facility to investigate celestial objects …
View article: Ground-based infrastructure for improved space weather specification at low latitudes
Ground-based infrastructure for improved space weather specification at low latitudes Open
A notional deployment of a
\nheterogeneous network of ground-based
\ninstrumentation is proposed. The
\nscientific rationale for the deployment is
\nto gain a comprehensive suite of
\nmeasurements pertinent to improving our
\nunderst…
View article: Automatic Burst Detection in Solar Radio Spectrograms Using Deep Learning: deARCE Method
Automatic Burst Detection in Solar Radio Spectrograms Using Deep Learning: deARCE Method Open
We present in detail an automatic radio-burst detection system, based on the convolutional neural network, for use with any kind of solar spectrogram. A full methodology for model training, performance evaluation, and feedback to the model…
View article: Comment on egusphere-2023-201
Comment on egusphere-2023-201 Open
Abstract. Type II solar radio bursts are the signatures of particle acceleration caused by shock waves in the solar atmosphere and interplanetary space. Being electromagnetic radiation that travel at the speed of light, th…
View article: ROBUST – a radio burst identification algorithm using the e-CALLISTO station at University of Graz
ROBUST – a radio burst identification algorithm using the e-CALLISTO station at University of Graz Open
The primary condition to produce eruptive solar flare events and solar energetic particles is the opening of magnetic field lines into interplanetary space. In that respect, real-time radio spectra cover important observational information…
View article: An Overview of Solar Radio Type II Bursts through analysis of associated solar and near Earth space weather features during Ascending phase of SC 25
An Overview of Solar Radio Type II Bursts through analysis of associated solar and near Earth space weather features during Ascending phase of SC 25 Open
Type II solar radio bursts are the signatures of particle acceleration caused by shock waves in the solar atmosphere and interplanetary space. Being electromagnetic radiation that travel at the speed of light, they can serve as ground obse…
View article: Automatic Burst Detection in Solar Radio Spectrograms using Deep Learning: deARCE method
Automatic Burst Detection in Solar Radio Spectrograms using Deep Learning: deARCE method Open
We present in detail an automatic radio burst detection system, based on the AlexNet convolutional neural network, for use with any kind of solar spectrograms. A full methodology for model training, performance evaluation and feedback to t…
View article: Solar Radio Spectro-polarimetry (50 - 500 MHz) : Design, Development and Characterization of a Cross-Polarized Log-Periodic Dipole antenna
Solar Radio Spectro-polarimetry (50 - 500 MHz) : Design, Development and Characterization of a Cross-Polarized Log-Periodic Dipole antenna Open
A Cross-polarized Log-Periodic Dipole Antenna (CLPDA) for spectro-polarimetric observations in the frequency range 50-500 MHz was developed at the Gauribidanur radio observatory of the Indian Institute of Astrophysics to study the characte…
View article: The Analysis of Type Ii and Type Iii Solar Radio Bursts: Gui for the E-Callisto Data
The Analysis of Type Ii and Type Iii Solar Radio Bursts: Gui for the E-Callisto Data Open
View article: The effects of solar radio bursts on frequency bands utilised by the aviation industry in Sub-Saharan Africa
The effects of solar radio bursts on frequency bands utilised by the aviation industry in Sub-Saharan Africa Open
Solar radio bursts have been associated with a number of disruptions in avionic systems. The objective of this work is to develop solar radio burst interference thresholds which account for the technical specifications of aviation-related …
View article: Identifying the energy release site in a solar microflare with a jet
Identifying the energy release site in a solar microflare with a jet Open
Context. One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. Aims. W…
View article: Identifying the energy release site in a Solar microflare with a jet
Identifying the energy release site in a Solar microflare with a jet Open
One of the main science questions of the Solar Orbiter and Parker Solar Probe missions deals with understanding how electrons in the lower solar corona are accelerated and how they subsequently access interplanetary space. We aim to invest…
View article: First Solar Radio Burst Observations by the Mexican Array Radio Telescope (MEXART) at 140 MHz
First Solar Radio Burst Observations by the Mexican Array Radio Telescope (MEXART) at 140 MHz Open
View article: The BINGO project
The BINGO project Open
Context. The measurement of diffuse 21-cm radiation from the hyperfine transition of neutral hydrogen (H I signal) in different redshifts is an important tool for modern cosmology. However, detecting this faint signal with non-cryogenic re…
View article: Space weather study through analysis of solar radio bursts detected by a single-station CALLISTO spectrometer
Space weather study through analysis of solar radio bursts detected by a single-station CALLISTO spectrometer Open
This article summarises the results of an analysis of solar radio bursts (SRBs) detected by the Compound Astronomical Low-cost Low-frequency Instrument for Spectroscopy and Transportable Observatory (CALLISTO) spectrometer hosted by the Un…