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Investigation of the Effect of a Longitudinal Magnetic Field Component on the Dynamics of Protons inside a Plasmoid
Malova, H. V.; Malykhin, A. Yu.; Grigorenko, E. E.
Kinetic effects of the dynamics of protons in plasmoids with a non-zero longitudinal ( By) magnetic field component in a current sheet (CS) of a geomagnetic tail are considered. The results of modeling proton dynamics and a description of the mechanism of emergence of "north-south" density asymmetry are presented. The mechanism that is possibly re…
A new sample of southern radio galaxies: host-galaxy masses and star-formation rates
Jarvis, Matt J.; Prescott, Matthew; Marubini, Takalani +3 more
In this study we define a new sample of distant powerful radio galaxies in order to study their host galaxy properties and provide targets for future observations of H I absorption with new radio telescopes and to understand the fuelling and feedback from such sources. We have cross-matched the Sydney University Molonglo Sky Survey (SUMSS) radio c…
Investigating the OB associations in CMa using eclipsing binary systems: Preliminary results on LV CMa
Bakış, V.; Tunç, E.
In this study, an eclipsing binary of a short orbital period (P = 1.d1834857) LV CMa (V = 8.m7) is selected as a candidate member of an association in the direction of CMa OB1/R1 region. Light curves in UBVRcIc photometric bands were obtained and low-resolution (R ∼ 5500) spectra were collected. Prelimin…
The tricky line of sight towards Cygnus-X: The [DB2001] CL05 embedded cluster as a pilot case
Jiménez-Bailón, E.; Alves, J.; de la Fuente, D. +2 more
The nearest massive star-forming complex, Cygnus-X, is widely used as a laboratory for star cluster formation and feedback processes, under the implicit assumption that all its components are located roughly at the same distance. We present a multi-wavelength study of a 15' × 15' field in southern Cygnus-X, where different components involving clu…
On the Fon Astroplate Project Accomplishment
Ehgamberdiev, Sh. A.; Andruk, V. M.; Pakuliak, L. K. +10 more
The plan of the photographic survey of the northern sky (FON) was proposed in 1976 in Golosiiv observatory (now MAO NAS of Ukraine) by I. Kolchinsky and A. Onegina. The final project of the Compiled FONAC catalog (FON Astrographic Catalog) is based on the digital data of photographic plates exposed at four observatories. They are MAO NAS of Ukrain…
Vertical Current Density Structure of Saturn's Equatorial Current Sheet
Ray, L. C.; Case, N. A.; Arridge, C. S. +1 more
Routine spacecraft encounters with the Saturn current sheet due to the passage of aperiodic waves provide the opportunity to analyze the current sheet structure. The current density is expected to peak where the field strength reaches a minimum if approximated as a Harris current sheet. However, in Earth's magnetotail this is not always the case a…
Decomposing the host galaxy from high-z QSOs using principal component analysis
Wang, Yi-Ping; He, Wei
High resolution deep imaging from space and adaptive optics techniques with large ground-based facilities have enabled studies examining faint host galaxies of high redshift quasi-stellar objects (QSOs). However, the related image processing techniques, especially for a precise point-spread function (PSF) reconstruction and characterization of the…
Publisher Correction: No detection of methane on Mars from early ExoMars Trace Gas Orbiter observations
Montmessin, Franck; Belyaev, Denis A.; Fedorova, Anna A. +42 more
The surname of author Cathy Quantin-Nataf was misspelled `Quantin-Nata', authors Ehouarn Millour and Roland Young were missing from the ACS and NOMAD Science Teams list, and minor changes have been made to the author and affiliation lists; see accompanying Amendment. These errors have been corrected online.
Lifetime of channel electron multiplier detectors dedicated to plasma instruments for Solar Orbiter and JUICE space missions
André, N.; Fedorov, A.; Grigoriev, A. +2 more
Both Solar Orbiter and Jupiter Icy moon Explorer (JUICE) are long-life ESA missions, which should work in extremely difficult space environment. A very high thermal load up to 13 Solar constants will affect Solar Orbiter, and JUICE will experience a high penetration radiation influence in the Jupiter magnetosphere. The plasma packages of these mis…
Quiet-Sun EUV He II (30.4 nm) Spatial Power Ratios and Network Dissipation Trend for 2010 - 2018
Didkovsky, Leonid
We explore a significant change of the trend of the transition region network scale variation that occurred around of 2016 when a series of spotless days in 2018, with similar radiative characteristics, were added to previously analyzed days in 2017. We find that a mean per six-year spatial power ratio for 2016 vs. 2010 shows a 29% yearly increase…