113 citations · 925 across the 66 of their papers we have counts for
7 papers · 1 filter
Gamma-ray Burst Afterglows: Time-Varying Extinction, Polarization, and Colors due to Rotational Disruption of Dust Grains
Thiem Hoang, Nguyen Chau Giang, Le Ngoc Tram
Prompt optical emission of gamma-ray bursts (GRBs) is known to have important effects on the surrounding environment. In this paper, we study rotational disruption and alignment of…
Supernova Shocks in Molecular Clouds: Velocity Distribution of Molecular Hydrogen
William T. Reach, Le Ngoc Tram, Matthew Richter +2
Supernovae from core-collapse of massive stars drive shocks into the molecular clouds from which the stars formed. Such shocks affect future star formation from the molecular cloud…
Modeling rotational disruption of grains and microwave emission from spinning dust in AGB envelopes
Le Ngoc Tram, Thiem Hoang, Archana Soam +2
Radio observations of some Asymptotic Giant Branch (AGB) star envelopes show the excess emission at frequencies below 100 GHz which cannot be explained by thermal dust emission (he…
Time-Varying Extinction, Polarization, and Colors of Type Ia Supernovae due to Rotational Disruption of Dust Grains
Nguyen Chau Giang, Thiem Hoang, Le Ngoc Tram
Photometric and polarimetric observations toward type Ia supernovae (SNe Ia) frequently report an unusually low total-to-selective extinction ratio () and small peak…
SOFIA/EXES observations of warm H at high spectral resolution: witnessing para-to-ortho conversion behind a molecular shock wave in HH7
David A. Neufeld, Curtis DeWitt, Pierre Lesaffre +4
Spectrally-resolved observations of three pure rotational lines of H, conducted with the EXES instrument on SOFIA toward the classic bow shock HH7, reveal systematic velocity s…
Rotational Desorption of Ice Mantles and Complex Molecules from Suprathermally Rotating Dust Grains around Young Stellar Objects
Thiem Hoang, Le Ngoc Tram
Ice mantles on dust grains play a central role in astrochemistry. Water and complex organic molecules (COMs) are thought to first form on the ice mantles and subsequently are relea…
Dust rotational dynamics in non-stationary shock: rotational disruption of nanoparticles by stochastic mechanical torques and spinning dust emission
Le Ngoc Tram, Thiem Hoang
In a previous work, Hoang and Tram discovered a new mechanism for destruction of nanoparticles due to suprathermal rotation of grains in stationary C-shocks, which is termed rotati…