A5107274118- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Ionosphere and magnetosphere dynamics
- Atmospheric Ozone and Climate
- Planetary Science and Exploration
- Galaxies: Formation, Evolution, Phenomena
- Astrophysical Phenomena and Observations
- Space Satellite Systems and Control
University of Arizona
2023-2024
Planetary Science Institute
2024
Ho Chi Minh City International University
2022
Vietnam National University Ho Chi Minh City
2022
We report the highest spatial resolution measurement of magnetic fields in M17 using thermal dust polarization taken by SOFIA/HAWC+ centered at 154 $\mu$m wavelength. Using Davis-Chandrasekhar-Fermi method, we found presence strong $980 \pm 230\;\mu$G and $1665 885\;\mu$G lower-density (M17-N) higher-density (M17-S) regions, respectively. The field morphology M17-N possibly mimics gravitational collapse molecular cores while M17-S run perpendicular to matter structure display a pillar an...
Abstract In this work, we present the longest photometric monitoring of up to 1200 hr strongly variable brown dwarf binaries Luhman 16 AB and provide evidence ±5% variability on a timescale several hundreds hours for object. We show that short-period rotational modulation around 5 ( k = 1 wavenumber) 2.5 2 dominate under 10 hr, where planetary-scale wave model composed waves provides good fits both periodograms light curve. particular, models consisting three four sine could explain...
Abstract Molecular emission arising from the interactions of supernova remnant (SNR) shock waves and molecular clouds provide a tool for studying dispersion compression that might kick-start star formation as well understanding cosmic-ray production. Purely rotational CO created by magnetohydrodynamic in SNR–molecular cloud interaction is an effective tracer, particularly slow-moving, continuous shocks into cold inner clumps cloud. In this work, we present new theoretical radiative transfer...
In this work, we present the longest photometric monitoring of up to 1200 hours strongly variable brown-dwarf binaries Luhman 16 AB and provide evidence $\pm$5% variability on a timescale several-to-hundreds for object. We show that short-period rotational modulation around 5 (k = 1 wavenumber) 2.5 2 dominate under 10 hours, where planetary-scale waves model composed k provides good fits both periodogram light curve. particular, models consisting three four sine could explain curve durations...
Recent studies revealed viewing-angle-dependent color and spectral trends in brown dwarfs, as well long-term photometric variability (~100 hr). The origins of these are yet unexplained. Here, we propose that seemingly unrelated sets observations stem from the same phenomenon: polar regions dwarfs directly imaged exoplanets spectrally different lower-latitude regions, they evolve over longer timescales, possibly driven by vortices. We explore this hypothesis via a spatio-temporal atmosphere...
Abstract Recent studies revealed viewing-angle-dependent color and spectral trends in brown dwarfs, as well long-term photometric variability (∼100 hr). The origins of these are yet unexplained. Here, we propose that seemingly unrelated sets observations stem from the same phenomenon: polar regions dwarfs directly imaged exoplanets spectrally different lower-latitude regions, they evolve over longer timescales, possibly driven by vortices. We explore this hypothesis via a spatiotemporal...
Abstract Circumstellar dust forms and evolves within the envelope of evolved stars, including asymptotic giant branch (AGB) red supergiant (RSG) stars. The extinction stellar light by circumstellar is vital for interpreting RSG/AGB observations determining high-mass RSG progenitors core-collapse supernovae. However, properties are not well understood. Modern understanding evolution suggests that intense radiation can radically change across through RAdiative Torque Disruption (RAT-D)...
Circumstellar dust is formed and evolved within the envelope of stars, including Asymptotic Giant Branch (AGB) Red Supergiant (RSG). The extinction stellar light by circumstellar vital for interpreting RSG/AGB observations determining high-mass RSG progenitors core-collapse supernovae. Nevertheless, properties are not well understood. Modern understanding evolution suggests that intense radiation can radically change across through RAdiative Torque Disruption (RAT-D) mechanism. In this...
Molecular emission arising from the interactions of supernova remnant (SNR) shock waves and molecular clouds provide a tool for studying dispersion compression that might kick-start star formation as well understanding cosmic ray enhancement in SNRs. Purely-rotational CO created by magneto-hydrodynamic SNR - cloud interaction is an effective tracer, particularly slow-moving, continuous shocks into cold inner clumps cloud. In this work, we present new theoretical radiative transfer framework...