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Interrelationships between Halo-Type Coronal Mass Ejections and Solar Flares Based on Observations in the 23rd and 24th Cycles
Bruevich, E. A.; Burov, V. A.; Arakelov, A. S. +1 more
Solar activity of an explosive character during the 23rd and 24th cycles is analyzed. X-ray observations from the GOES-15 satellite during flares and observations during coronal mass ejections (CME) with the SOHO/LASCO coronagraph are used. The delay intervals between the onset of a flare and the onset of a Halo-type CME associated the same active…
Erratum: "Changes in a Dusty Ringlet in the Cassini Division after 2010" (2020, PSJ, 1, 43)
Bridges, Bill; Hedman, Matthew
Temporal and Spatial Association Between a Solar Flare, CME, and Radio Burst on 19 November 2013
Shanmugaraju, A.; Suresh, K.; Syed Ibrahim, M. +2 more
We present multi-wavelength and multi-instrument observations and analysis of a major X 1.0 class flare, radio burst, halo coronal mass ejection (CME), and loop eruption from the solar active region NOAA 11893 on 19 November 2013 (SOL2013-11-19T10:26). The aim of this work is twofold: The first aim to study the evolution of the loop eruption and t…
High Cadence Millimagnitude Photometric Observation of V1112 Persei (Nova Per 2020)
Thomas, N.; Ziegler, K.; Liu, P.
The private Lookout Observatory (LO) monitored the classical nova V1112 Persei on 37 nights spanning over 80 days, beginning shortly after its discovery by Seiji Ueda on 25 November 2020. Images were captured at a high cadence, with exposure lengths of initially less than 2 seconds and with some sessions lasting more than ten hours. The standard e…
Lost in Space? Relativistic Interstellar Navigation using an Astrometric Star Catalog
Bailer-Jones, Coryn A. L.
The exploration of interstellar space will require autonomous navigation systems that do not rely on tracking from the Earth. Here I develop a method to determine the 3D position and 3D velocity of a spacecraft in deep space using a star catalog. As a spacecraft moves away from the Sun, the observed positions and velocities of the stars will chang…
Preliminary Statistical Analysis of Lambda Boötis Stars
Paunzen, E.; Hakobyan, A. A.; Alecian, G. +1 more
To enlarge our database of Chemically Peculiar stars, we compiled published data concerning the Lambda Boötis stars observed by high-resolution spectroscopy techniques during last decades. In total, 62 Lambda Boötis stars have been added to the database. To deepen our knowledge on statistical overview of the abundance anomalies versus the physical…
The late-type detached binary du Leonis
Nelson, Robert H.
New radial velocity and photometric data for DU Leonis have been obtained, and Roche-based simultaneous analysis of RV and light curve data for DU Leo has been accomplished for the first time, using the 2003 and 2015 versions of the Wilson-Devinney code. Values for the masses and radii have been obtained: M1 = 0.937 (5) Mʘ, M…
Horizon 2061: MoonVillage Perspectives for Science, Missions, Technologies, Infrastructures and Society
Foing, Bernard H.
We discuss MoonVillage Perspectives at Horizon 2061 addressing Science, Missions, Technologies, Infrastructures and Society. ESA, ILEWG and partners have been elaborating the concept of a Moon Village with the goal of a sustainable human presence and activity on the lunar surface as an ensemble where multiple users can carry out multiple activitie…
Study of DFBS Late-Type Stars at High Galactic Latitudes
Kostandyan, G. R.
We study in this thesis relatively bright late-type giants found in the First Byurakan Survey (FBS) data base. We present the 2nd version of the catalogue of FBS LTS with new data (FBS LTS v2), 1471 objects. It is a homogeneous and complete database for high- Galactic late-type stars, including M and C types. Since 2007, all FBS low-resolution spe…
Variability study of the FBS M giants
Gigoyan, K. S.; Kostandyan, G. R.
We study in this paper variability of the late-type M giants found in the First Byurakan Survey (FBS) spectroscopic data base. We used phase dependent light - curves from large sky area variability data bases such as Catalina Sky Survey (CSS) and All-Sky Automated Survey for Supernovae (ASAS-SN). We used also the distance information derived from …