489 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Netherlands Institute for Radio AstronomyNL23 papers
- Belarusian State UniversityBY14 papers
- Leibniz Institute for Astrophysics PotsdamDE14 papers
- Polish Academy of SciencesPL14 papers
- Thüringer Landessternwarte TautenburgDE14 papers
- University of ManchesterGB14 papers
- University of WarsawPL14 papers
- Leiden UniversityNL13 papers
- Centre National de la Recherche ScientifiqueFR12 papers
- Radboud University NijmegenNL12 papers
- Rutherford Appleton LaboratoryGB12 papers
- Bielefeld UniversityDE11 papers
15 papers · 1 filter
V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey
J. R. Callingham, T. W. Shimwell, H. K. Vedantham +44
We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We use the second data release of the 144 MHz LOFAR Two-metr…
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…
Interferometric imaging of the type IIIb and U radio bursts observed with LOFAR on 22 August 2017
Bartosz Dabrowski, Katarzyna Mikula, Pawel Flisek +18
The Sun is the source of different types of radio bursts that are associated with solar flares, for example. Among the most frequently observed phenomena are type III solar bursts.…
Stimulation of soy seeds using environmentally friendly magnetic and electric fields
Agata Dziwulska-Hunek, Agnieszka Niemczynowicz, Radosław A. Kycia +4
The study analyzes the impact of constant and alternating magnetic fields and alternating electric fields on various growth parameters of soy plants: the germination energy and cap…
Recombination of hot ionized nebulae: The old planetary nebula around V4334 Sgr (Sakurai's star)
Martin Reichel, Stefan Kimeswenger, Peter A. M. van Hoof +5
After becoming ionized, low-density astrophysical plasmas will begin a process of slow recombination. Models for this still have significant uncertainties. The recombination cannot…
Lithium in coalesced non-compact stars
Tomek Kamiński, Mirek Schmidt, Marcin Hajduk +3
Context. Galactic red novae are thought to be produced in stellar mergers between non-compact stars, such as main-sequence stars and cool giants. They are hoped to help in explaini…
Discrete Laplace and transition operators over non-Archimedean ordered fields
Anna Muranova
We investigate properties of spectrum of normalized Laplacian for finite graphs over non-Archimedean ordered fields. We prove a Cheeger's inequality for first non-zero…
Non-autonomous multidimensional Toda system and multiple interpolation problem
Adam Doliwa
We study the interpolation analogue of the Hermite-Padé type I approximation problem. We provide its determinant solution and we write down the corresponding integrable discrete sy…
Discovery of recurrent flares of 6.7 GHz methanol maser emission in Cepheus A HW2
M. Durjasz, M. Szymczak, M. Olech +1
Context: Class II methanol masers at 6.7 GHz originate close to high-mass young stellar objects (HMYSOs). Their high sensitivity to local condition variations makes them a useful m…
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…
Detection of periodic flares in 6.7 GHz methanol masers G45.804-0.356 and G49.043-1.079
Mateusz Olech, Michał Durjasz, Marian Szymczak +1
Context: Periodicity in 6.7 GHz methanol maser sources is a rare phenomenon that was discovered during long-term monitoring programmes. Understanding the underlying processes that…
The LOFAR Two-metre Sky Survey -- V. Second data release
T. W. Shimwell, M. J. Hardcastle, C. Tasse +103
In this data release from the LOFAR Two-metre Sky Survey (LoTSS) we present 120-168MHz images covering 27% of the northern sky. Our coverage is split into two regions centred at ap…
Non-commutative Hermite--Padé approximation and integrability
Adam Doliwa
We introduce and solve the non-commutative version of the Hermite-Padé type I approximation problem. Its solution, expressed by quasideterminants, leads in a natural way to a subcl…
Peculiar radioX-ray relationship in active stars
H. K. Vedantham, J. R. Callingham, T. W. Shimwell +5
The empirical relationship between the non-thermal 5GHz radio luminosity and the soft X-ray luminosity of active stellar coronae, canonically called the Güdel-Benz relationship (Gü…