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Solar Type J Radio Bursts and the Associated Coronal Loop
Feng, S. W.; Misawa, H.; Xie, H. X.
The solar type J radio burst is a variant of type III bursts, which are a probe for understanding solar energetic electrons and local electron density. This study investigates a type J burst event on 2017 September 9. We have combined the data from the extreme-ultraviolet (EUV) imaging and the EUV Imaging Spectrometer (EIS) to analyze the event. W…
Photometric and Kinematic Studies of Open Clusters Ruprecht 1 and Ruprecht 171
Bilir, Selçuk; Yontan, Talar; Banks, Timothy S. +5 more
This study outlines a detailed investigation using CCD UBV and Gaia DR3 data sets of the two open clusters Ruprecht 1 (Rup-1) and Ruprecht 171 (Rup-171). Fundamental astrophysical parameters such as color excesses, photometric metallicities, ages, and isochrone distances were based on UBV-data analyses, whereas membership probability calculations,…
High-energy insights from an escaping coronal mass ejection with Solar Orbiter/STIX observations
Hayes, L. A.; Krucker, S.; Collier, H. +1 more
Context. Solar eruptive events, including solar flares and coronal mass ejections (CMEs), are typically characterised by energetically significant X-ray emissions from flare-accelerated electrons and hot thermal plasmas. However, the intense brightness of solar flares often overshadows high-coronal X-ray emissions from the associated eruptions due…
V407 Lup, an intermediate polar nova
Luna, G. J. M.; Orio, M.; Ciroi, S. +6 more
We present X-ray and optical observations of nova V407 Lup (Nova Lup 2016), previously well monitored in outburst, as it returned to quiescent accretion. The X-ray light curve in 2020 February revealed a clear flux modulation with a stable period of 564.64 $\pm$ 0.64 s, corresponding to the period measured in outburst and attributed to the spin of…
Optical Polarisation Study of Galactic Open Clusters
Ganesh, Shashikiran; Prajapati, Prachi; Joshi, Santosh +3 more
Dust is a ubiquitous component in our Galaxy. It accounts for only 1% mass of the ISM but still is an essential part of the Galaxy. It affects our view of the Galaxy by obscuring the starlight at shorter wavelengths and re-emitting in longer wavelengths. Studying the dust distribution in the Galaxy at longer wavelengths may cause discrepancies due…
Estimate of force noise from electrostatic patch potentials in LISA Pathfinder
Ferroni, V.; Sala, L.; Vitale, S. +1 more
This paper discusses force noise in LISA and LISA Pathfinder arising from the interaction of patch potentials on the test mass and surrounding electrode housing surfaces with their own temporal fluctuations. We aim to estimate the contribution of this phenomenon to the force noise detected in LISA Pathfinder in excess of the background from Browni…
The Valuable Long-period Cluster Cepheid KQ Scorpii and other Calibration Candidates
Minniti, Dante; Majaess, Daniel; Turner, David G. +2 more
The classical Cepheid KQ Sco is a valuable anchor for the distance scale because of its long pulsation period ($28^{\rm d}.7$) and evidence implying membership in the open cluster UBC 1558. Analyses tied to Gaia DR3 astrometry, photometry, spectroscopy, radial velocities, and 2MASS-VVV photometry indicate a common distance of $2.15\pm0.15$ kpc (\c…
Hic Sunt Dracones: Uncovering Dynamical Perturbers within the Habitable Zone
Kane, Stephen R.; Burt, Jennifer A.
The continuing exploration of neighboring planetary systems is providing deeper insights into the relative prevalence of various system architectures, particularly with respect to the solar system. However, a full assessment of the dynamical feasibility of possible terrestrial planets within the habitable zones (HZs) of nearby stars requires detai…
CAMEL. II. A 3D Coronal Mass Ejection Catalog Based on Coronal Mass Ejection Automatic Detection with Deep Learning
Zhang, Yan; Feng, Li; Lu, Lei +5 more
Coronal mass ejections (CMEs) are major drivers of geomagnetic storms, which may cause severe space weather effects. Automating the detection, tracking, and three-dimensional (3D) reconstruction of CMEs is important for operational predictions of CME arrivals. The COR1 coronagraphs on board the Solar Terrestrial Relations Observatory spacecraft ha…
Parent Volatile Outgassing Associations in Cometary Nuclei: Synthesizing Rosetta Measurements and Ground-based Observations
Bodewits, Dennis; Luspay-Kuti, Adrienn; Bonev, Boncho P. +5 more
Comets, as remnants of the solar system's formation, vary in volatile-refractory content. In situ comet studies, such as the Rosetta mission to 67P/Churyumov–Gerasimenko, provide detailed volatile composition insights, while ground-based studies offer broader comet samples but in fewer species. Comparing 67P's volatile correlations during the 2 yr…