Search Publications
X-Ray Views of Galactic Accreting Pulsars in High-Mass X-Ray Binaries
Weng, Shan-Shan; Ji, Long
Accreting X-ray pulsars, located in X-ray binaries, are neutron stars with magnetic fields as strong as
Ultra-Low Frequency Waves of Foreshock Origin Upstream and Inside of the Magnetospheres of Earth, Mercury, and Saturn Related to Solar Wind–Magnetosphere Coupling
Juhász, Antal; Bebesi, Zsofia; Dwivedi, Navin Kumar +2 more
This review examines ultra-low frequency (ULF) waves across different planetary environments, focusing on Earth, Mercury, and Saturn. Data from spacecraft missions (CHAMP, Swarm, and Oersted for Earth; MESSENGER for Mercury; and Cassini for Saturn) provide insights into ULF wave dynamics. At Earth, compressional ULF waves, particularly Pc3 waves, …
Radar Observations of Liquid Water in the South Polar Region of Mars: Indications from Astrobiology Perspectives
Xiong, Siting; Ding, Chunyu; Su, Yan +4 more
In recent decades, extensive research has led to the understanding that Mars once hosted substantial liquid-water reserves. While the current Martian landscape boasts significant water-ice deposits at its North and South poles, the elusive presence of liquid-water bodies has remained undetected. A breakthrough occurred with the identification of r…
A Very-High-Energy Gamma-Ray View of the Transient Sky
Carosi, Alessandro; López-Oramas, Alicia
The development of the latest generation of Imaging Atmospheric Cherenkov Telescopes (IACTs) over recent decades has led to the discovery of new extreme astrophysical phenomena in the very-high-energy (VHE, E > 100 GeV) gamma-ray regime. Time-domain and multi-messenger astronomy are inevitably connected to the physics of transient VHE emitters,…
High-Energy Spectra of Black Hole and Neutron Star Low-Mass X-Ray Binaries
Pszota, Gábor
In the case of low-mass X-ray binaries, the companion star is often too faint for detection; therefore, there is no chance for dynamical studies to independently determine the mass of the compact object. In the absence of a mass estimate, one cannot make a distinction as to whether the binary hosts a black hole or neutron star. Therefore, the ques…
The Property of the Gaia Celestial Reference Frame 3 (Gaia-CRF3)
Liu, Guangyi; Guo, Sufen
With the release of Gaia DR3, evaluating the performance and consistency of its reference frame (Gaia-CRF3) with the International Celestial Reference Frame (ICRF3) has become a critical task. Gaia-CRF3 serves as the second non-rotating inertial reference frame in the optical wavelength for the implementation of the International Celestial Referen…
Disk Evolution Study Through Imaging of Nearby Young Stars (DESTINYS): Dynamical Evidence of a Spiral-Arm-Driving and Gap-Opening Protoplanet from SAO 206462 Spiral Motion
Ren, Bin B.; Ménard, François; Bae, Jaehan +8 more
In the early stages of planetary system formation, young exoplanets gravitationally interact with their surrounding environments and leave observable signatures on protoplanetary disks. Among these structures, a pair of nearly symmetric spiral arms can be driven by a giant protoplanet. For the double-spiraled SAO 206462 protoplanetary disk, we obt…
Observational Detection of Higher-Order Secular Perturbations in Tight Hierarchical Triple Stars
Borkovits, Tamás; Mitnyan, Tibor
In this work, we search for observational evidence of higher-order secular perturbations in three eclipsing binaries. These are slightly eccentric binaries, and they form the inner pairs of tight, compact, hierarchical triple star systems. Simultaneously, we analyze the high-precision satellite (Kepler and TESS) light curves; eclipse timing variat…
The Purport of Space Telescopes in Supernova Research
Vinkó, József; Könyves-Tóth, Réka; Szalai, Tamás
The violent stellar explosions known as supernovae have received especially strong attention in both the research community and the general public recently. With the advent of space telescopes, the study of these extraordinary events has switched gears and it has become one of the leading fields in modern astrophysics. In this paper, we review som…
Oort Constants and Local Stellar Kinematics from GCNS
Qi, Zhaoxiang; Guo, Sufen
Oort constants and local kinematics are vital parameters with which to study the structure and dynamics of the Milky Way. When GCNS was published, it provided a clean sample of stars in the solar vicinity, which gives us an ideal tool with which to determine these parameters. Our aim was to calculate the reliable Oort constants with GCNS. We deter…