109 citations · 812 across the 48 of their papers we have counts for
10 papers · 1 filter
NuSTAR and Swift observations of Swift J1357.2-0933 during an early phase of its 2017 outburst
H. Stiele, A. K. H. Kong
We present a detailed spectral analysis of Swift and NuSTAR observations of the very faint X-ray transient and black hole system Swift J1357.2-0933 during an early low hard state o…
280 one-opposition near-Earth asteroids recovered by the EURONEAR with the Isaac Newton Telescope
O. Vaduvescu, L. Hudin, T. Mocnik +80
One-opposition near-Earth asteroids (NEAs) are growing in number, and they must be recovered to prevent loss and mismatch risk, and to improve their orbits, as they are likely to b…
Rapid X-ray variations of the Geminga pulsar wind nebula
C. Y. Hui, Jongsu Lee, A. K. H. Kong +4
A recent study by Posselt et al. (2017) reported the deepest X-ray investigation of the Geminga pulsar wind nebula (PWN) by using \emph{Chandra X-ray Observatory}. In comparison wi…
Searching for High Energy, Horizon-scale Emissions from Galactic Black Hole Transients during Quiescence
Lupin Chun-Che Lin, Hung-Yi Pu, Kouichi Hirotani +5
We search for the gamma-ray counterparts of stellar-mass black holes using long-term Fermi archive to investigate the electrostatic acceleration of electrons and positrons in the v…
Enhanced gamma radiation toward the rotation axis from the immediate vicinity of extremely rotating black holes
Yoogeun Song, Hung-Yi Pu, Kouichi Hirotani +3
We investigate the acceleration of electrons and positrons by magnetic-field-aligned electric fields in the polar funnel of an accreting black hole (BH). Applying the pulsar outer-…
Lepton acceleration in the vicinity of the event horizon: Very-high-energy emissions from super-massive black holes
Kouichi Hirotani, Hung-Yi Pu, Lupin Chun-Che Lin +5
Around a rapidly rotating black hole (BH), when the plasma accretion rate is much less than the Eddington rate, the radiatively inefficient accretion flow (RIAF) cannot supply enou…