2026 天文年會 (ASROC Annual Meeting)

Session

Early Career Scientists

May 17, 2026, 11:30 AM

International Conference Hall, College of Hakka Studies, NYCU 國立陽明交通大學客家文化學院國際會議廳

Conveners

Early Career Scientists

• Daniel Harsono

140. Short-term Dynamics of Short-Period Comets

Yu-Chi Cheng (IANCU)

5/17/26, 11:30 AM

Oral

We summarized our simulation results of the short-term dynamical evolution on 500 numbered Short-Period Comets over a 2000-year window (between 1000 and 3000 A.D.). To understand their evolution history, we classified the comets we studied into several groups based on the dynamical features: the recent semi-major/perihelion (a/q) jump, the Tisserand parameter reversion, and the temporary...

166. Probing AU-Scale Magnetic-Field Reversals in the ISM with Pulsar Scintillation

Jacob Yen (ASIAA)

5/17/26, 11:45 AM

Oral

AU-scale magnetic structures in the interstellar medium (ISM) — particularly current sheets formed at magnetic-field reversals — are predicted to strongly influence cosmic-ray transport, yet direct observations at these scales have remained inaccessible. Traditional Faraday rotation measure (RM) techniques lack the sub-parsec resolution required and are contaminated by ionospheric...

86. Testing the formation of an aspherical circumstellar medium around supernova progenitors via rotation-driven mass loss

Dr Tomoki Matsuoka (The University of Tokyo / ASIAA)

5/17/26, 12:00 PM

Oral

The presence of dense circumstellar medium (CSM) around core-collapse supernova (SN) progenitors has been universally realized lately through the radiative properties of SN-CSM interaction immediately after the explosion, although the physical origin of the CSM formation has not yet been established. Recent detections of significant polarization in early-phase Type IIP SNe 2023ixf and 2024ggi...

125. JWST Edge-on Disk Ice (JEDIce): An analysis of PAH signatures within the disks

Charles Mentzer (National Tsing Hua University)

5/17/26, 12:15 PM

Oral

Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous carbonaceous molecules in the interstellar medium, tracing the interaction between ultraviolet radiation fields and molecular material. In protoplanetary disks, they are widely used as diagnostics of disk surface chemistry, UV processing, and ionization structure. Using recently obtained JWST/NIRSpec and MIRI IFU observations of the...

142. Spiral-like gas features and cold fronts driven by AGN feedback in cool-core clusters

Majidul Rahaman (IoA, NTHU, Taiwan)

5/17/26, 12:30 PM

Oral

Spiral structures and cold fronts in cool-core (CC) galaxy clusters are almost universally attributed to minor merger-induced gas sloshing. However, many CC clusters appear dynamically relaxed with no visible perturber, challenging this interpretation. Using three-dimensional cosmic-ray magnetohydrodynamic simulations of self-regulated AGN feedback in a Perseus-like cluster, we show that...