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The non-thermal emission from the colliding-wind binary Apep
del Palacio, S.; De Becker, M.; Romero, G. E. +2 more
Therecently discovered massive binary system Apep is the most powerful synchrotron emitter among the known Galactic colliding-wind binaries. This makes this particular system of great interest to investigate stellar winds and the non-thermal processes associated with their shocks. This source was detected at various radio bands, and in addition th…
The XMM Cluster Survey: an independent demonstration of the fidelity of the eFEDS galaxy cluster data products and implications for future studies
Romer, A. K.; Mann, R. G.; Klein, M. +10 more
We present the first comparison between properties of clusters of galaxies detected by the eROSITA Final Equatorial-Depth Survey (eFEDS) and the XMM Cluster Survey (XCS). We have compared, in an ensemble fashion, properties from the eFEDS X-ray cluster catalogue with those from the Ultimate XMM eXtragaLactic (XXL) survey project (XXL-100-GC). We f…
2D and Slab Turbulent Cascade Rates in the Inner Heliosphere
Zank, G. P.; Zhao, L. -L.; Telloni, D. +1 more
We present a theoretical and observational study of 2D and slab turbulence cascade (or heating) rates of transverse total turbulence energies, transverse cross helicity, transverse outward and inward Elsässer energy, transverse fluctuating magnetic energy density, and transverse fluctuating kinetic energy from the perihelion of the first Parker So…
The GAPS programme at TNG. XXXIV. Activity-rotation, flux-flux relationships, and active-region evolution through stellar age
Baratella, M.; Mallonn, M.; Scandariato, G. +26 more
Context. Active-region evolution plays an important role in the generation and variability of magnetic fields on the surface of lower main sequence stars. However, determining the lifetime of active-region growth and decay as well as their evolution is a complex task. Most previous studies of this phenomenon are based on optical light curves, whil…
A Search for Exoplanets in Open Clusters and Young Associations based on TESS Objects of Interest
Mann, Andrew W.; Gan, Tianjun; Sun, Qinghui +1 more
We report the results of our search for planet candidates in open clusters and young stellar associations based on the Transiting Exoplanet Survey Satellite (TESS) Objects of Interest Catalog. We find one confirmed planet, one promising candidate, one brown dwarf and three unverified planet candidates in a sample of 1229 open clusters from the sec…
Near-infrared Spectroscopy of a Massive Young Stellar Object in the Direction toward the Galactic Center: XCN and Aromatic C-D Features
Onaka, Takashi; Sakon, Itsuki; Shimonishi, Takashi
We report near-infrared (2.5-5 µm) long-slit (~30″) spectroscopy of a young stellar object in the direction toward the Galactic center with the Infrared Camera on board the AKARI satellite. The present target is suggested to be AFGL 2006 based on its very red color and close location. The spectra show strong absorption features of H2
Large-scale asymmetry in galaxy spin directions: Analysis of galaxies with spectra in DES, SDSS, and DESI Legacy Survey
Shamir, Lior
Multiple previous studies using several different probes have shown considerable evidence for the existence of cosmological-scale anisotropy and a Hubble-scale axis. One of the probes that show such evidence is the distribution of the directions toward which galaxies spin. The advantage of the analysis of the distribution of galaxy spin directions…
Circumnuclear Dust in AP Librae and the Source of Its VHE Emission
Georganopoulos, Markos; Breiding, Peter; Meyer, Eileen T. +2 more
The broad high-energy spectral component in blazars is usually attributed to various inverse Compton scattering processes in the relativistic jet, but has not been clearly identified in most cases due to degeneracies in physical models. AP Librae, a low-synchrotron-peaking BL Lac object (LBL) detected in 2015 by H.E.S.S. at very high energies (VHE…
Validation and atmospheric exploration of the sub-Neptune TOI-2136b around a nearby M3 dwarf
Kuzuhara, M.; Tamura, M.; Kudo, T. +51 more
Context. The NASA space telescope TESS is currently in the extended mission of its all-sky search for new transiting planets. Of the thousands of candidates that TESS is expected to deliver, transiting planets orbiting nearby M dwarfs are particularly interesting targets since they provide a great opportunity to characterize their atmospheres by t…
The Role of Filamentary Structures in the Formation of Two Dense Cores, L1544 and L694-2
Caselli, Paola; Chung, Eun Jung; Kim, Shinyoung +5 more
We present mapping results of two prestellar cores, L1544 and L694-2, embedded in filamentary clouds in C18O (3-2), 13CO (3-2), 12CO (3-2), HCO+ (4-3), and H13CO+ (4-3) lines with the James Clerk Maxwell Telescope to examine the role of the filamentary structures in the formation of…