109 citations · 1.3k across the 40 of their papers we have counts for
31 papers · 1 filter
Determining the acceleration regions of in situ electrons using remote radio and X-ray observations
D. E. Morosan, N. Dresing, C. Palmroos +13
Solar energetic particles in the heliosphere are produced by flaring processes on the Sun or shocks driven by coronal mass ejections. These particles are regularly detected remotel…
Coronal Diagnostics of Solar Type-III Radio Bursts Using LOFAR and PSP Observations
Mohamed Nedal, Kamen Kozarev, Peijin Zhang +1
This study aims to investigate the ambiguous source and the underlying physical processes of the solar type III radio bursts that occurred on April 3, 2019, through the utilization…
Validation of heliospheric modeling algorithms through pulsar observations I: Interplanetary scintillation-based tomography
C. Tiburzi, B. V. Jackson, L. Cota +4
Solar-wind 3-D reconstruction tomography based on interplanetary scintillation (IPS) studies provides fundamental information for space-weather forecasting models, and gives the po…
Validation of heliospheric modeling algorithms through pulsar observations II: simulations with EUHFORIA
G. M. Shaifullah, J. Magdalenic, C. Tiburzi +3
In space weather studies and forecasting we employ magnetohydrodynamic (MHD) simulations which can provide rather accurate reconstruction of the solar wind dynamics and its evoluti…
RFI Flagging in Solar and Space Weather Low Frequency Radio Observations
Peijin Zhang, André R. Offringa, Pietro Zucca +2
Radio spectroscopy provides a unique inspection perspective for solar and space weather research, which can reveal the plasma and energetic electron information in the solar corona…
Deriving Large Coronal Magnetic Loop Parameters Using LOFAR J burst Observations
Jinge Zhang, Hamish A. S. Reid, Vratislav Krupar +3
Large coronal loops around one solar radius in altitude are an important connection between the solar wind and the low solar corona. However, their plasma properties are ill-define…
Application of Novel Interplanetary Scintillation Visualisations using LOFAR: A Case Study of Merged CMEs from September 2017
R. A. Fallows, K. Iwai, B. V. Jackson +3
Observations of interplanetary scintillation (IPS - the scintillation of compact radio sources due to density variations in the solar wind) enable the velocity of the solar wind to…
Interferometric imaging, and beam-formed study of a moving Type IV Radio burst with LOFAR
Hongyu Liu, Pietro Zucca, Kyung-Suk Cho +6
Type IV radio burst has been studied for over 50 years. However, the specifics of the radio emission mechanisms is still an open question. In order to provide more information abou…
Solar observations with single-dish INAF radio telescopes: continuum imaging in the 18-26 GHz range
A. Pellizzoni, S. Righini, M. N. Iacolina +28
We present a new solar radio imaging system implemented through the upgrade of the large single-dish telescopes of the Italian National Institute for Astrophysics (INAF), not origi…
Imaging of the Quiet Sun in the Frequency Range of 20-80 MHz
PeiJin Zhang, Pietro Zucca, Kamen Kozarev +7
Radio emission of the quiet Sun is considered to be due to thermal bremsstrahlung emission of the hot solar atmosphere. The properties of the quiet Sun in the microwave band have b…
Exploring the circular polarisation of low-frequency solar radio bursts with LOFAR
Diana E. Morosan, Juska E. Räsänen, Anshu Kumari +9
The Sun is an active star that often produces numerous bursts of electromagnetic radiation at radio wavelengths. Low frequency radio bursts have recently been brought back to light…
A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks -- Sun to 1 AU
Kamen Kozarev, Mohamed Nedal, Rositsa Miteva +2
The solar corona below 10 solar radii is an important region for early acceleration and transport of solar energetic particles (SEPs) by coronal mass ejection-driven shock waves. T…
Observations of shock propagation through turbulent plasma in the solar corona
Eoin P. Carley, Baptiste Cecconi, Hamish A. Reid +14
Eruptive activity in the solar corona can often lead to the propagation of shock waves. In the radio domain the primary signature of such shocks are type II radio bursts, observed…
LOFAR imaging of the solar corona during the 2015 March 20 solar eclipse
A. M. Ryan, P. T. Gallagher, E. P. Carley +12
The solar corona is a highly-structured plasma which can reach temperatures of more than ~2 MK. At low frequencies (decimetric and metric wavelengths), scattering and refraction of…
LOFAR observations of a jet-driven piston shock in the low solar corona
Ciara A. Maguire, Eoin P. Carley, Pietro Zucca +2
The Sun produces highly dynamic and eruptive events that can drive shocks through the corona. These shocks can accelerate electrons, which result in plasma emission in the form of…
LOFAR observations of radio burst source sizes and scattering in the solar corona
Pearse C. Murphy, Eoin P. Carley, Aoife Maria Ryan +2
Low frequency radio wave scattering and refraction can have a dramatic effect on the observed size and position of radio sources in the solar corona. The scattering and refraction…
CMEchaser, detecting line-of-sight occultations due to Coronal Mass Ejections
Golam Shaifullah, Caterina Tiburzi, Pietro Zucca
We present a python-based tool to detect the occultation of background sources by foreground Solar coronal mass ejections. The tool takes as input standard celestial coordinates of…
Interferometric Imaging with LOFAR Remote Baselines of the Fine Structures of a Solar Type IIIb Radio Burst
PeiJin Zhang, Pietro Zucca, Sarrvesh Seethapuram Sridhar +8
Context. Solar radio bursts originate mainly from high energy electrons accelerated in solar eruptions like solar flares, jets, and coronal mass ejections. A subcategory of solar r…
The frequency drift and fine structures of Solar S-bursts in the high frequency band of LOFAR
PeiJin Zhang, Pietro Zucca, ChuanBing Wang +8
Solar S-bursts are short duration ( s at decameter wavelengths) radio bursts that have been observed during periods of moderate solar activity, where S stands for short. The fr…
Multiple Regions of Shock-accelerated Particles during a Solar Coronal Mass Ejection
Diana E. Morosan, Eoin P. Carley, Laura A. Hayes +8
The Sun is an active star that can launch large eruptions of magnetised plasma into the heliosphere, called coronal mass ejections (CMEs). These ejections can drive shocks that acc…
Modelling of proton acceleration in application to a ground level enhancement
A. Afanasiev, R. Vainio, A. P. Rouillard +3
The source of high-energy protons (>500 MeV) responsible for the so-called ground level enhancements (GLEs) remains an open question in solar physics. One of the candidates is a sh…
Shock location and CME 3D reconstruction of a solar type II radio burst with LOFAR
P. Zucca, D. E. Morosan, A. P. Rouillard +62
Type II radio bursts are evidence of shocks in the solar atmosphere and inner heliosphere that emit radio waves ranging from sub-meter to kilometer lengths. These shocks may be ass…
Connecting Coronal Mass Ejections to their Solar Active Region Sources: Combining Results from the HELCATS and FLARECAST Projects
Sophie A. Murray, Jordan A. Guerra, Pietro Zucca +5
Coronal mass ejections (CMEs) and other solar eruptive phenomena can be physically linked by combining data from a multitude of ground-based and space-based instruments alongside m…
Deriving the properties of coronal pressure fronts in 3-D: application to the 17 May 2012 ground level enhancement
Alexis P. Rouillard, Illya Plotnikov, Rui F. Pinto +12
We study the link between an expanding coronal shock and the energetic particles measured near Earth during the Ground Level Enhancement (GLE) of 17 May 2012. We developed a new te…