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Multiwavelength observations of the Galactic X-ray binaries IGR J20155+3827 and Swift J1713.4-4219
Masetti, N.; Bird, A. J.; Fiocchi, M. +4 more
In recent years, thanks to the continuous surveys performed by INTEGRAL and Swift satellites, our knowledge of the hard X-ray/soft gamma-ray sky has greatly improved. As a result it is now populated with about 2000 sources, both Galactic and extra-galactic, mainly discovered by IBIS and BAT instruments. Many different follow-up campaigns have been…
Properties of the brightest globular cluster in M 81 based on multicolour observations
Ma, Jun; Wang, Shoucheng
Context. Researching the properties of the brightest globular cluster (referred to as GC1) in M 81 can provide a fossil record of the earliest stages of galaxy formation and evolution. The Beijing-Arizona-Taiwan-Connecticut (BATC) Multicolour Sky Survey has carried out deep exposures of M 81.
Aims: We derive the magnitudes in intermediate-ban…
The Mie representation for Mercury's magnetospheric currents
Glassmeier, K. -H.; Narita, Y.; Motschmann, U. +4 more
Poloidal–toroidal magnetic field decomposition is a useful application of the Mie representation and the decomposition method enables us to determine the current density observationally and unambiguously in the local region of magnetic field measurement. The application and the limits of the decomposition method are tested against the Mercury magn…
Dynamics of variable dusk-dawn flow associated with magnetotail current sheet flapping
Grocott, Adrian; Walach, Maria-Theresia; Lane, James H. +1 more
We present Cluster spacecraft observations from 12 October 2006 of convective plasma flows in the Earth's magnetotail. Earthward flow bursts with a dawnward v⊥y component, observed by Cluster 1 (C1), are inconsistent with the duskward flow that might be expected at the pre-midnight location of the spacecraft. Previous observations have …
Solar Ultraviolet Bursts in the Joint Footpoints of Multiple Transition Region Loops
Fu, Hui; Xia, Lidong; Huang, Zhenghua +4 more
Cassini-Plasma Interaction Simulations Revealing the Cassini Ion Wake Characteristics: Implications for In-Situ Data Analyses and Ion Temperature Estimates
Wilson, R. J.; Morooka, M. W.; Hadid, L. Z. +7 more
We have used Spacecraft Plasma Interaction Software (SPIS) simulations to study the characteristics (i.e., dimensions, ion depletion, and evolution with the changing spacecraft attitude) of the Cassini ion wake. We focus on two regions, the plasma disk at 4.5-4.7 RS, where the most prominent wake structure will be formed, and at 7.6 R
Minimally Modified Gravity Fitting Planck Data Better Than ΛCDM
Pookkillath, M. C.
Here we present cosmology of a class of Minimally Modified Gravity theory dubbed as $f(H)$ theory. After introducing a concrete model for the free function, we find that this cosmological model fits Planck data better than $Λ $CDM.
Fundamental properties of stars from Kepler and Gaia data: parallax offset and revised scaling relations
Örtel, S.; Yıldız, M.
Data from the space missions Gaia, Kepler, CoRoT and TESS, make it possible to compare parallax and asteroseismic distances. From the ratio of two densities ρsca/ρπ, we obtain an empirical relation fΔν between the asteroseismic large frequency separation and mean density, which is important for more accurate stella…
Nonsequential neural network for simultaneous, consistent classification, and photometric redshifts of OTELO galaxies
Cepa, J.; Pérez García, A. M.; Alfaro, E. J. +17 more
Context. Computational techniques are essential for mining large databases produced in modern surveys with value-added products.
Aims: This paper presents a machine learning procedure to carry out a galaxy morphological classification and photometric redshift estimates simultaneously. Currently, only a spectral energy distribution (SED) fitti…
Comprehensive list of semi-detached double-lined eclipsing binaries with Gaia DR2 data
Malkov, O. Yu.
Semi-detached eclipsing systems play an important role in our understanding of stellar properties. In the present study, we have cross-matched a previously compiled comprehensive list of SD double-lined eclipsing binaries, containing 119 systems, with Gaia DR2, and analyze the result. A special analysis is conducted for systems with controversial …