6.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Academia SinicaTW1.4k papers
- National Astronomical Observatory of JapanJP910 papers
- The University of TokyoJP744 papers
- Center for Astrophysics Harvard & SmithsonianUS671 papers
- Centre National de la Recherche ScientifiqueFR668 papers
- European Southern ObservatoryCL490 papers
- California Institute of TechnologyUS470 papers
- The Graduate University for Advanced Studies, SOKENDAIJP427 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP425 papers
- Jet Propulsion LaboratoryUS360 papers
- Max Planck Institute for AstronomyDE342 papers
- Leiden UniversityNL340 papers
18 papers · 2 filters
Resolving the Geometry of the Innermost Relativistic Jets in Active Galactic Nuclei
Juan-Carlos Algaba, Masanori Nakamura, Keiichi Asada +1
In the current paradigm, it is believed that the compact VLBI radio core of radio-loud AGNs represents the innermost upstream regions of relativistic outflows. These regions of AGN…
The Non-homogeneous Poisson Process for Fast Radio Burst Rates
Earl Lawrence, Scott Vander Wiel, Casey J. Law +2
This paper presents the non-homogeneous Poisson process (NHPP) for modeling the rate of fast radio bursts (FRBs) and other infrequently observed astronomical events. The NHPP, well…
Lepton acceleration in the vicinity of the event horizon: High-energy and Very-high-energy emissions from rotating black holes with various masses
Kouichi Hirotani, Hung-Yi Pu, Lupin Chun-Che Lin +5
We investigate the electrostatic acceleration of electrons and positrons in the vicinity of the event horizon, applying the pulsar outer-gap model to black hole magnetospheres. Dur…
Structural Transition in the NGC 6251 Jet: An Interplay with the Supermassive Black Hole and Its Host Galaxy
Chih-Yin Tseng, Keiichi Asada, Masanori Nakamura +3
The structure of the NGC 6251 jet on the milliarcsecond scale is investigated using images taken with the European VLBI Network and the Very Long Baseline Array. We detect a struct…
Chandra and Swift X-ray Observations of the X-ray Pulsar SMC X-2 During the Outburst of 2015
K. L. Li, C. -P Hu, L. C. C. Lin +1
We report the Chandra/HRC-S and Swift/XRT observations for the 2015 outburst of the high-mass X-ray binary (HMXB) pulsar in the Small Magellanic Cloud, SMC X-2. While previous stud…
The Effects of Accretion Flow Dynamics on the Black Hole Shadow of Sagittarius A
Hung-Yi Pu, Kazunori Akiyama, Keiichi Asada
A radiatively inefficient accretion flow (RIAF), which is commonly characterized by its sub-Keplerian nature, is a favored accretion model for the supermassive black hole at Galact…
GRB 110530A: Peculiar Broad Bump and Delayed Plateau in Early Optical Afterglows
Shu-Qing Zhong, Li-Ping Xin, En-Wei Liang +7
We report our very early optical observations of GRB 110530A and investigate its jet properties together with its X-ray afterglow data. A peculiar broad onset bump followed by a pl…
Repetitive Patterns in Rapid Optical Variations in the Nearby Black-hole Binary V404 Cygni
Mariko Kimura, Keisuke Isogai, Taichi Kato +65
How black holes accrete surrounding matter is a fundamental, yet unsolved question in astrophysics. It is generally believed that matter is absorbed into black holes via accretion…
A Possible 55-day X-ray Period of the Ultraluminous Accreting Pulsar M82 X-2
A. K. H. Kong, C. -P. Hu, L. C. -C. Lin +4
We report a possible detection of a 55-day X-ray modulation for the ultraluminous accreting pulsar M82 X-2 from archival Chandra observations. Because M82 X-2 is known to have a 2.…
Studying the SGR 1806-20/Cl* 1806-20 region using the \emph{Fermi} Large Area Telescope
Paul K. H. Yeung, Albert K. H. Kong, P. H. Thomas Tam +4
The region around SGR 1806-20 and its host stellar cluster Cl* 1806-20 is a potentially important site of particle acceleration. The soft ray repeater and Cl* 1806-20, which al…
Linearly Polarized Millimeter and Submillimeter Continuum Emission of Sgr A* Constrained by ALMA
Hauyu Baobab Liu, Melvyn C. H. Wright, Jun-Hui Zhao +7
Our aim is to characterize the polarized continuum emission properties including intensity, polarization position angle, and polarization percentage of Sgr A* at 100 (3.0 mm)…
The 492 GHz emission of Sgr A* constrained by ALMA
Hauyu Baobab Liu, Melvyn C. H. Wright, Jun-Hui Zhao +9
We report linearly polarized continuum emission properties of Sgr A* at 492 GHz, based on the Atacama Large Millimeter Array (ALMA) observations. We used the observations of…
Magnetar-Powered Supernovae in Two Dimensions. I. Superluminous Supernovae
Ke-Jung Chen, S. E. Woosley, Tuguldur Sukhbold
Previous studies have shown that the radiation emitted by a rapidly rotating magnetar embedded in a young supernova can greatly amplify its luminosity. These one-dimensional studie…
Resolving the rotation measure of the M87 jet on kilo-parsec scales
Juan-Carlos Algaba, Keiichi Asada, Masanori Nakamura
We investigate the distribution of Faraday rotation measure (RM) in the M87 jet at arc-second scales by using archival polarimetric VLA data at 8, 15, 22 and 43 GHz. We resolve the…
X-ray Observations of Bow Shocks around Runaway O Stars. The case of Oph and BD+433654
J. A. Toalá, L. M. Oskinova, A. González-Galán +3
Non-thermal radiation has been predicted within bow shocks around runaway stars by recent theoretical works. We present X-ray observations towards the runaway stars Oph (Chandr…
Observing two dark accelerators around the Galactic Centre with Fermi Large Area Telescope
C. Y. Hui, P. K. H. Yeung, C. W. Ng +6
We report the results from a detailed ray investigation in the field of two "dark accelerators", HESS J1745-303 and HESS J1741-302, with years of data obtained by the Fer…
Odyssey: A Public GPU-Based Code for General-Relativistic Radiative Transfer in Kerr Spacetime
Hung-Yi Pu, Kiyun Yun, Ziri Younsi +1
General-relativistic radiative transfer (GRRT) calculations coupled with the calculation of geodesics in the Kerr spacetime are an essential tool for determining the images, spectr…
Low-energy Population III supernovae and the origin of extremely metal-poor stars
Ke-Jung Chen, Alexander Heger, Daniel J. Whalen +3
Some ancient, dim, metal-poor stars may have formed in the ashes of the first supernovae (SNe). If their chemical abundances can be reconciled with the elemental yields of specific…