113 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- HUN-REN Research Centre for Astronomy and Earth SciencesHU13 papers
- Eötvös Loránd UniversityHU9 papers
- Konkoly ObservatoryHU9 papers
- Austrian Academy of SciencesAT8 papers
- Space Research InstituteRU8 papers
- Hungarian Academy of SciencesHU6 papers
- Swedish Institute of Space PhysicsSE6 papers
- HUN-REN Wigner Research Centre for PhysicsHU5 papers
- Goddard Space Flight CenterUS4 papers
- Lomonosov Moscow State UniversityRU4 papers
- Planetary Science InstituteUS4 papers
- Centre National de la Recherche ScientifiqueFR3 papers
24 papers
Turbulent dynamo in the terrestrial magnetosheath
Zoltán Vörös, Owen Wyn Roberts, Yasuhito Narita +10
Dynamo action refers to energy exchange processes through which magnetic fields are generated at the expense of kinetic energy of the plasma flows. Dynamos can generate magnetic fi…
Variation of sunspot groups' polarity separation during their evolution
Judit Muraközy
During the emergence of sunspot groups the footpoints of their leading and following parts move apart. This diverging motion results in the stretching of the active regions, which…
Orbital dynamics in galactic potentials under mass transfer
Eduárd Illés, Dániel Jánosi, Tamás Kovács
Time-dependent potentials are common in galactic systems that undergo significant evolution, interactions, or encounters with other galaxies, or when there are dynamic processes li…
Mysterious non-detection of HeI (23S) transit absorption of GJ436b
M. S. Rumenskikh, M. L. Khodachenko, I. F. Shaikhislamov +4
Possible reasons for the non-detection of absorption in the metastable HeI(2^3S) line at transit observations of warm Neptune GJ436b, in spite of the well pronounced strong absorpt…
Asteroseismology and Spectropolarimetry of the Exoplanet Host Star Serpentis
Travis S. Metcalfe, Derek Buzasi, Daniel Huber +31
The bright star Ser hosts a hot Neptune with a minimum mass of 13.6 and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 d…
Comparing 1-year GUMICS-4 simulations of the Terrestrial Magnetosphere with Cluster Measurements
Gabor Facsko, David Sibeck, Ilja Honkonen +18
We compare the predictions of the GUMICS4 global magnetohydrodynamic model for the interaction of the solar wind with the Earth's magnetosphere with Cluster~SC3 measurements for…
Tidal Forcing on the Sun and the 11-year Solar Activity Cycle
Rodolfo G. Cionco, Sergey M. Kudryavtsev, Willie Soon
The hypothesis that tidal forces on the Sun are related to the modulations of the solar-activity cycle has gained increasing attention. The works proposing physical mechanisms of p…
GRBAlpha: the smallest astrophysical space observatory -- Part 1: Detector design, system description and satellite operations
András Pál, Masanori Ohno, László Mészáros +42
Aims. Since launched on 2021 March 22, the 1U-sized CubeSat GRBAlpha operates and collects scientific data on high-energy transients, making it the smallest astrophysical space obs…
The peak-flux of GRB 221009A measured with GRBAlpha
Jakub Ripa, Hiromitsu Takahashi, Yasushi Fukazawa +42
The brightest gamma-ray burst ever observed, long-duration GRB 221009A, was detected by GRBAlpha nano-satellite without saturation. We present light curves of the prompt emission i…
Variations of the Internal Asymmetries of Sunspot Groups During their Decay
Judit Muraközy
The aim of the present study is to show the varying asymmetries during the decay of sunspot groups. The source of input data is the SoHO/MDI-Debrecen Database (SDD) sunspot catalog…
Attitude determination for nano-satellites -- II. Dead reckoning with a multiplicative extended Kalman filter
János Takátsy, Tamás Bozóki, Gergely Dálya +3
This paper is the second part of a series of studies discussing a novel attitude determination method for nano-satellites. Our approach is based on the utilization of thermal imagi…
Magnetic Reconnection within the Boundary Layer of a Magnetic Cloud in the Solar Wind
Zoltán Vörös, Ali Varsani, Emiliya Yordanova +5
The twisted local magnetic field at the front or rear regions of the magnetic clouds (MCs) associated with interplanetary coronal mass ejections (ICMEs) is often nearly opposite to…
A possible link between turbulence and plasma heating
Emiliya Yordanova, Zoltán Vörös, Luca Sorriso-Valvo +2
Numerical simulations and experimental results have shown that current sheets formation in space plasmas can be associated with enhanced vorticity. Also, in simulations the generat…
Review of synergic meteor observations: linking the results from cameras, ionosondes, infrasound and seismic detectors
Á. Kereszturi, V. Barta, I. Bondár +6
Joint evaluation of different meteor observation types support the better understanding of both the meteor phenomenon and the terrestrial atmosphere. Two types of examples are pres…
How much has the Sun influenced Northern Hemisphere temperature trends? An ongoing debate
Ronan Connolly, Willie Soon, Michael Connolly +20
To evaluate the role of Total Solar Irradiance (TSI) on Northern Hemisphere (NH) surface air temperature trends it is important to have reliable estimates of both quantities. 16 di…
Attitude determination for nano-satellites -- I. Spherical projections for large field of view infrasensors
Kornél Kapás, Tamás Bozóki, Gergely Dálya +3
Due to the advancement of nano-satellite technology, CubeSats and fleets of CubeSats can form an alternative to high-cost large-size satellite missions with the advantage of extend…
Sub-ion scale Compressive Turbulence in the Solar wind: MMS spacecraft potential observations
Owen Wyn Roberts, Rumi Nakamura, Klaus Torkar +9
Compressive plasma turbulence is investigated at sub-ion scales in the solar wind using both the Fast Plasma Investigation (FPI) instrument on the Magnetospheric MultiScale mission…
MMS Observations of Whistler and Lower Hybrid Drift Waves Associated with Magnetic Reconnection in the Turbulent Magnetosheath
Vörös Zoltán, Emiliya Yordanova, Daniel B. Graham +2
Magnetic reconnection (MR) and the associated concurrently occurring waves have been extensively studied at large-scale plasma boundaries, in quasi-symmetric and asymmetric configu…
The tidal parameters of TRAPPIST-1 b and c
R. Brasser, A. C. Barr, V. Dobos
The TRAPPIST-1 planetary system consists of seven planets within 0.05 au of each other, five of which are in a multi-resonant chain. {These resonances suggest the system formed via…
Tidal Heating and the Habitability of the TRAPPIST-1 Exoplanets
Vera Dobos, Amy C. Barr, László L. Kiss
Context. New estimates of the masses and radii of the seven planets orbiting the ultracool M-dwarf TRAPPIST-1 star permit improved modelling of their compositions, heating by tidal…
Electron scale structures and magnetic reconnection signatures in the turbulent magnetosheath
E. Yordanova, Z. Vörös, A. Varsani +26
Collisionless space plasma turbulence can generate reconnecting thin current sheets as suggested by recent results of numerical magnetohydrodynamic simulations. The MMS mission pro…
Greenhouse effect from the point of view of radiative transfer
Szabolcs Barcza
Radiative power balance of a planet in the solar system is delineated. The terrestrial powers are transformed to average global flux in an effective atmospheric column (EAC) approx…
Hot flow anomaly remnant in the far geotail?
Gábor Facskó, Andrea Opitz, Benoit Lavraud +6
A hot flow anomaly (HFA) like event was observed by the Solar TErrestrial RElations Observatory (STEREO) in the night side magnetosheath in the far tail in February-March 2007. The…
Windsock memory conditioned RAM (Co-Ram) pressure effect: forced reconnection in the Earth's magnetotail
Z. Vörös, G. Facskó, M. Khodachenko +3
Magnetic reconnection (MR) is a key physical concept explaining the addition of magnetic flux to the magnetotail and closed flux lines back-motion to the dayside magnetosphere. Thi…