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Community of European Solar Radio Astronomers (CESRA)
@cesra.bsky.social
35 followers 250 following 38 posts
The Community of European Solar Radio Astronomers (CESRA) is an organization of scientists to stimulate research of the Sun by means of radio waves.
https://www.astro.gla.ac.uk/users/eduard/cesra/
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cesra.bsky.social
Solar Microwave Polarization Observed by the Newest and Oldest Solar Radio Telescopes by Masumi Shimojo www.astro.gla.ac.uk/users/eduard...
#Astronomy #RadioAstronomy
Solar Radio Astronomy - CESRA
Polarization, regardless of wavelength, is one of the key observables for understanding the solar atmosphere because it provides information about magnetic fields, and microwave polarization is also o...
www.astro.gla.ac.uk
January 12, 2026 at 7:50 AM
cesra.bsky.social
Energetics of compressive waves in the solar corona by Francesco Azzollini et al www.astro.gla.ac.uk/users/eduard...
#Astronomy #RadioAstronomy
Solar Radio Astronomy - CESRA
Inelastic scattering off moving or oscillating density fluctuations leads to broadening of radio signals propagating in the solar corona and solar wind. Using an anisotropic density fluctuation model ...
www.astro.gla.ac.uk
January 10, 2026 at 2:38 PM
cesra.bsky.social
Time-Profile Study of Type III Solar Radio Bursts Using Parker Solar Probe by Tulsi Thapa and Yihua Yan www.astro.gla.ac.uk/users/eduard...
#Astronomy
Solar Radio Astronomy - CESRA
Type III solar radio bursts are frequent and powerful radio emissions caused by electron beams travelling through the solar corona into the interplanetary medium, providing valuable information about ...
www.astro.gla.ac.uk
January 9, 2026 at 8:21 AM
cesra.bsky.social
A Catalog of Metric Type II Radio Bursts Detected by RSTN During Solar Cycle 24 by Bendict Lawrance et al. www.astro.gla.ac.uk/users/eduard...
#astronomy #RadioAstronomy
Solar Radio Astronomy - CESRA
Metric type II radio bursts are a type of solar radio emission characterized by a slowly drifting radio emission observed in dynamic spectra. They are generated by the interaction of a coronal shock w...
www.astro.gla.ac.uk
January 8, 2026 at 7:08 AM
cesra.bsky.social
The angular and frequency dependence of solar radio burst rise and decay times using multi-spacecraft observations by Nicolina Chrysaphi et al. www.astro.gla.ac.uk/users/eduard...
#Astronomy #RadioAstronomy #AAS
Solar Radio Astronomy - CESRA
Density fluctuations populating the heliosphere interfere with propagating radio photons, altering their trajectories through frequency-dependent effects like scattering. Crucially, these density fluc...
www.astro.gla.ac.uk
January 7, 2026 at 1:29 PM
cesra.bsky.social
Periods and frequency drifts of groups of narrowband decimetric spikes by M. Karlický, J. Dudík and J. Rybák www.astro.gla.ac.uk/users/eduard...
#Astronomy #radioAstronomy
Solar Radio Astronomy - CESRA
The narrowband decimetric spikes belong to the most interesting solar radio bursts, because they are connected to the primary flare process.  Their brightness temperature is up to 1015 K. In the radio...
www.astro.gla.ac.uk
January 6, 2026 at 5:33 PM
cesra.bsky.social
Generation of Series of Meter/Decimeter III type Bursts During Thermal Phase of Solar Flare by Meshalkina and Altyntsev www.astro.gla.ac.uk/users/eduard...
#AAS #Astronomy #RadioAstronomy
Solar Radio Astronomy - CESRA
It has been established that decimeter type III bursts are generated in the upper corona by electron beams. However, many questions remain about their sources to this day. Some were associated with th...
www.astro.gla.ac.uk
January 6, 2026 at 2:21 PM
cesra.bsky.social
Observations of coronal holes with the Siberian Radio Heliograph by Altyntsev et al. www.astro.gla.ac.uk/users/eduard...
#Astronomy #AAS #science
Solar Radio Astronomy - CESRA
Coronal holes (CHs) are regions of reduced brightness in solar disk images in extreme ultraviolet (EUV) or soft X-ray emissions corresponding to configurations with open magnetic field lines. Data on ...
www.astro.gla.ac.uk
January 6, 2026 at 2:19 PM
cesra.bsky.social
Signatures of Confined and Eruptive Solar Flares in Microwave Spectra by E. W. Cliver et al. www.astro.gla.ac.uk/users/eduard...
🧪#Astronomy #RadioAstronomy #AAS
Solar Radio Astronomy - CESRA
Solar flares are generally divided into two classes: eruptive flares (with associated coronal mass ejections; CMEs) and confined flares that lack CMEs. Because eruptive flares are the principal source...
www.astro.gla.ac.uk
January 6, 2026 at 7:50 AM
cesra.bsky.social
🔭 #astronomy 🧪 Spectral cleaving in solar type II radio bursts: Observations and interpretation by A. Koval et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Solar eruptive events, such as flares and coronal mass ejections (CMEs), can generate shock waves that propagate through the solar corona. These shock waves accelerate electrons, leading to Langmuir w...
www.astro.gla.ac.uk
January 2, 2026 at 11:34 AM
cesra.bsky.social
#astronomy 🧪
Magnetic Field Geometry and Anisotropic Scattering Effects to Explain Puzzling LOFAR Solar Radio Burst Observations by D. L. Clarkson et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Solar radio bursts are an indirect signature of accelerated electron beams from the solar atmosphere. These fast electrons generate Langmuir waves as they propagate through a decreasing plasma density...
www.astro.gla.ac.uk
January 2, 2026 at 11:29 AM
cesra.bsky.social
Temporally resolved Type III solar radio bursts in the frequency range 3-13 MHz by A. Vecchio et al. 🧪https://www.astro.gla.ac.uk/users/eduard/cesra/?p=3896
Solar Radio Astronomy - CESRA
Type III radio bursts are the most common coherent radio emission produced by the Sun. They are characterized by a rapid drift in time towards lower frequencies and represent an indirect signature of ...
www.astro.gla.ac.uk
December 30, 2025 at 10:21 PM
cesra.bsky.social
Observation of an Extraordinary Type V Solar Radio Burst: Nonlinear Evolution of the Electron Two-Stream Instability, by A. O. Benz et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Solar type V radio bursts are broad-band continua associated with type III bursts, which are generally believed to be caused by coronal electron beams. Type V bursts appear sometimes for 0.2 to 3 minu...
www.astro.gla.ac.uk
December 29, 2025 at 6:02 PM
cesra.bsky.social
Spectral Characteristics of Fundamental–Harmonic Pairs of Interplanetary Type III Radio Bursts Observed by PSP, by Ling Chen et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Type III radio bursts are the most powerful and common type of solar radio bursts, shifting rapidly from high to low frequencies. In addition to the fast frequency drift from high to low frequencies, ...
www.astro.gla.ac.uk
December 29, 2025 at 6:01 PM
cesra.bsky.social
A Wide-Band High-Frequency Type-II Solar Radio Burst by Vasanth et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Type-II radio bursts are usually observed below 400 MHz with slowly-drifting narrow fundamental and/or harmonic bands. Events with starting frequencies higher than 400 MHz are rarely reported (e.g., P...
www.astro.gla.ac.uk
December 28, 2025 at 3:16 PM
cesra.bsky.social
First Robust Detection of Linear Polarization from Metric Solar Emissions: Challenging Established Paradigms by S. Dey et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Polarization measurements of solar radio emissions are key diagnostics of coronal plasma, magnetic fields, and propagation effects, and can provide additional constraints on the emission mechanisms. A...
www.astro.gla.ac.uk
December 28, 2025 at 3:16 PM
cesra.bsky.social
New Instrument in Solar Flare Detection: A 50–55 GHz Millimeter-Wave Radiometer Spectrometer by X. Xu et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Solar flares, among the most intense explosive phenomena in the solar atmosphere, release vast amounts of energy in a short period, resulting in enhanced electromagnetic radiation across multiple band...
www.astro.gla.ac.uk
December 28, 2025 at 3:15 PM
cesra.bsky.social
Multispacecraft Analysis and Modeling of Type III Radio Burst Exciter Deceleration in Inhomogeneous Heliospheric Plasma F. Azzolini et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Electron beams accelerated in solar flares and escaping from the Sun along open magnetic field lines can trigger intense radio emissions known as type III solar radio bursts. However, the propagation ...
www.astro.gla.ac.uk
December 28, 2025 at 3:15 PM
cesra.bsky.social
Noise in Maps of the Sun at Radio Wavelengths by T. S. Bastian et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
The Sun is a powerful source of radio emissions, so much so that – unlike most celestial sources – this emission dominates the system noise of many radio telescopes. The noise resulting from such sour...
www.astro.gla.ac.uk
December 28, 2025 at 3:15 PM
cesra.bsky.social
Connecting EUV Observations of Chromospheric Large-Scale Flows and their properties at particular heights using Nobeyama 17 GHz data: I. The differential rotation profile by S. Routh et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
The phenomenon of differential rotation in the Sun, described by Eq.1 where A is the equatorial rotation rate, A and C are latitudinal gradients and $\theta$ is latitude, is a cornerstone of solar dyn...
www.astro.gla.ac.uk
December 28, 2025 at 3:14 PM
cesra.bsky.social
On the limitations of using metric radio bursts as diagnostic tools for interplanetary coronal mass ejections by J. Kandekar et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Our Sun is constantly active, and much of its activity, like Solar Flares and Coronal Mass Ejections, is driven by its Magnetic Fields. However, one cannot directly estimate this magnetic field; one n...
www.astro.gla.ac.uk
December 28, 2025 at 3:14 PM
cesra.bsky.social
A Flare-related Decimetric Type-IV Radio Burst Induced by the X2 Radiation of Electron Cyclotron Maser Emission by Lv et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Decimetric broadband radio bursts (with frequencies of hundreds of MHz to a few GHz) have been observed from the Sun and other flaring stars. In the solar case, such bursts have been classified as the...
www.astro.gla.ac.uk
December 28, 2025 at 3:14 PM
cesra.bsky.social
Observation and Modeling of Small Spatial Structures of Solar Radio Noise Storms using the uGMRT by S. Mondal et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
One of the most commonly observed solar radio sources in the metric and decametric wavelengths are the so-called solar noise storms. These are generally associated with active regions and are believed...
www.astro.gla.ac.uk
December 28, 2025 at 3:13 PM
cesra.bsky.social
A novel fine spectral structure of solar radio bursts with periodic beaded stripes observed by CBSm of CMP-II by Li et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Substantial fine structures, such as zebras, drifting bursts, spikes, and fibers have been reported during the past decades of observations of solar radio bursts. These fine structures are frequently ...
www.astro.gla.ac.uk
December 28, 2025 at 3:13 PM
cesra.bsky.social
Polarization Analysis of Type III Langmuir/Z-mode Waves with Coherent Magnetic Component Observations by Solar Orbiter by T. Formánek et al. www.astro.gla.ac.uk/users/eduard...
Solar Radio Astronomy - CESRA
Type III solar radio bursts are generated by beams of energetic electrons propagating through interplanetary space. These electron beams, released from the Sun, travel along the Parker spiral and grow...
www.astro.gla.ac.uk
December 28, 2025 at 3:13 PM