Search Publications
Interaction between a Coronal Mass Ejection and Comet 67P/Churyumov–Gerasimenko
Gombosi, Tamas I.; Combi, Michael R.; Altwegg, Kathrin +6 more
The interaction between a coronal mass ejection (CME) and a comet has been observed several times by in situ observations from the Rosetta Plasma Consortium, which is designed to investigate the cometary magnetosphere of comet 67P/Churyumov–Gerasimenko (CG). Goetz et al. reported a magnetic field of up to 300 nT measured in the inner coma, which i…
JCMT 850 µm Continuum Observations of Density Structures in the G35 Molecular Complex
Tsai, Chao-Wei; Sanhueza, Patricio; Tej, Anandmayee +32 more
Filaments are believed to play a key role in high-mass star formation. We present a systematic study of the filaments and their hosting clumps in the G35 molecular complex using James Clerk Maxwell Telescope SCUBA-2 850 µm continuum data. We identified five clouds in the complex and 91 filaments within them, some of which form 10 hub–filamen…
131 and 304 Å Emission Variability Increases Hours Prior to Solar Flare Onset
Mason, E. I.; Uritsky, Vadim M.; Kniezewski, Kara L. +1 more
Thermal changes in coronal loops are well studied, both in quiescent active regions and in flaring scenarios. However, relatively little attention has been paid to loop emission in the hours before the onset of a solar flare; here, we present the findings of a study of over 50 off-limb flares of Geostationary Operational Environmental Satellite cl…
Time Variation of the Solar Tachocline
Basu, Sarbani; Korzennik, Sylvain G.; Andrade de Aguiar, Wesley Antônio Machado
We have used solar oscillation frequencies and frequency splittings obtained over solar cycles 23 and 24 and the rising phase of solar cycle 25 to investigate whether the tachocline properties (the change in the rotation rate across the tachocline. i.e., the jump, the width, and the position) show any time variation. We confirm that the change in …
2017 Outburst of H 1743–322: AstroSat and Swift View
Dewangan, G. C.; Chand, Swadesh; Tripathi, Prakash +4 more
We perform a comprehensive timing and broadband spectral analysis using an AstroSat observation of the low-mass black hole X-ray binary H 1743–322 during its 2017 outburst. Additionally, we use two Swift/XRT observations, one of which is simultaneous with AstroSat and the other taken three days earlier, for timing analysis. The hardness–intensity …
Supernova Shocks in Molecular Clouds: Shocks Driven into Dense Cores in IC 443 and 3C 391
Tram, Le Ngoc; Reach, William T.; Godard, Benjamin +3 more
Supernova shocks into dense molecular cores in IC 443 (clumps B, C, and G) and 3C 391 were observed using the Stratospheric Observatory for Infrared Astronomy and complemented by archival data from the Herschel Space Observatory. The pure rotational transitions 0–0 S(1) and S(5) of H2, and the ground-state 110–101 …
A Targeted Search for Variable Gravitationally Lensed Quasars
Schlegel, David J.; Huang, Xiaosheng; Palmese, Antonella +4 more
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys. In our first paper, we laid out our pipeline and presented seven new gravitationally lensed supernovae candidates in a retrospective search. In this companion paper, we appl…
A Spatial Uniformity Check of Gaia DR3 Photometry and BP/RP Spectra
Huang, Bowen; Yuan, Haibo; Xiao, Kai
Gaia DR3 photometry and Blue Photometer (BP) and Red Photometer (RP) spectra have been widely used as reference in photometric calibrations. In this work, we check the spatial uniformity of Gaia DR3 photometry and BP/RP spectra by comparing the BP, RP, and G-band photometry with the synthetic ones from the BP/RP spectra. The discrepancies have a s…
Sigmoid Eruption Associated with the X9.3 Flare from AR 12673 Drives the Gradual Solar Energetic Particle Event on 2017 September 6
Brooks, David H.; Yardley, Stephanie L.
Large gradual solar energetic particle (SEP) events can pose a radiation risk to crewed spaceflight and a significant threat to near-Earth satellites; however, the origin of the SEP seed particle population, and how these particles are released, accelerated and transported into the heliosphere are not well understood. We analyze NOAA active region…
Erratum: "Inferences from Surface Brightness Fluctuations of Zwicky 3146 via the Sunyaev–Zel'dovich Effect and X-Ray Observations" (2023, ApJ, 951, 41)
Mroczkowski, Tony; Kraft, Ralph; Devlin, Mark +16 more