117 citations · 875 across the 44 of their papers we have counts for
46 papers
Sharpening the Mass Measurement of PSR J1048+2339 via High-Cadence Photometry
Kwan-Lok Li, Ka-Yui Au, Lupin C. C. Lin +3
Neutron stars are among the densest objects in the universe, and the mass measurements are crucial to the understanding of their equation of state. Pulsars in tight binaries can be…
Two Possible Optical--X-Ray Anti-Correlations of PSR J1023+0038
Ka-Yui Au, Kwan-Lok Li, Albert K. H. Kong +3
X-ray emission is generally believed to be one of the major heating sources for the optical modulation in redback pulsar binaries as we have seen similar phenomena in many low mass…
What determines the -ray luminosities of classical novae?
Peter Craig, Elias Aydi, Laura Chomiuk +25
Classical novae in the Milky Way have now been well-established as high-energy GeV -ray sources. In novae with main-sequence companions, this emission is believed to result from…
Effectiveness of Stacks in the Stacked Hilbert-Huang Transform
Lupin Chun-Che Lin, Chin-Ping Hu, Chien-Chang Yen +6
The Hilbert-Huang transform (HHT) consists of empirical mode decomposition (EMD), which is a template-free method that represents the combination of different intrinsic modes on a…
Autoregressive Search of Gravitational Waves: Denoising
Sangin Kim, C. Y. Hui, Jianqi Yan +5
Because of the small strain amplitudes of gravitational-wave (GW) signals, unveiling them in the presence of detector/environmental noise is challenging. For visualizing the signal…
Chandra Observation of NGC 1559: Eight Ultraluminous X-ray Sources Including a Compact Binary Candidate
Chen-Hsun Ma, Kwan-Lok Li, You-Hua Chu +1
Despite the 30-year history of ultra-luminous X-ray sources (ULXs) studies, issues like the majority of their physical natures (i.e., neutron stars, stellar-mass black holes, or in…
Influences of dynamical disruptions on the evolution of pulsars in globular clusters
Kwangmin Oh, C. Y. Hui, Jongsuk Hong +5
By comparing the physical properties of pulsars hosted by core-collapsed (CCed) and non-core-collapsed (Non-CCed) globular clusters (GCs), we find that pulsars in CCed GCs rotate s…
A light redback companion of PSR J1622-0315 and irradiation power in spider systems
Y. X. Jane Yap, Albert Kong, Kwan Lok Li
We report optical observations of the millisecond pulsar binary system PSR J1622-0315 with the Lulin 1m telescope in Taiwan and the Lijiang 2.4m telescope in China between 2019 and…
A comparison of millisecond pulsar populations between globular clusters and the Galactic field
Jongsu Lee, C. Y. Hui, J. Takata +4
We have performed a systematic study of the rotational, orbital and X-ray properties of millisecond pulsars (MSPs) in globular clusters (GCs) and compared their nature with those o…
Multi-Wavelength Observations Of A New Redback Millisecond Pulsar 4FGL J1910.7-5320
Ka-Yui Au, Jay Strader, Samuel J. Swihart +9
We present the study of multi-wavelength observations of an unidentified Fermi Large Area Telescope (LAT) source, 4FGL J1910.7-5320, a new candidate redback millisecond pulsar bina…
High-Resolution Radio Study of the Dragonfly Nebula
Ruolan Jin, C. -Y. Ng, Mallory S. E. Roberts +1
The Dragonfly Nebula (G75.20.1) powered by the young pulsar J20213651 is a rare pulsar wind nebula (PWN) that shows double tori and polar jets enclosed by a bow-shock structu…
Investigation of a likely orbital periodicity of Nova Hercules 2021 in X-rays and gamma-rays
Lupin Chun-Che Lin, Jhih-Ling Fan, Chin-Ping Hu +2
We report a detection of a 0.153 days period in the classical nova V1674 Her using the NICER observations taken within a month since the outburst (i.e., about MJD 59405). The X-ray…
A Comprehensive Analysis of the Gravitational Wave Events with the Hilbert-Huang Transform: From Compact Binary Coalescence to Supernova
Chin-Ping Hu, Lupin Chun-Che Lin, Kuo-Chuan Pan +4
We analyze the gravitational wave signals with a model-independent time-frequency analysis, which is improved from the Hilbert-Huang transform (HHT) and optimized for characterizin…
1RXH J082623.6-505741: a new long-period cataclysmic variable with an evolved donor and a low mass transfer rate
Kirill V. Sokolovsky, Jay Strader, Samuel J. Swihart +13
We report the discovery of 1RXH J082623.6-505741, a 10.4 hr orbital period compact binary. Modeling extensive optical photometry and spectroscopy reveals a K-t…
XMM-Newton and NuSTAR observations of the compact millisecond pulsar binary PSR~J16530158
Jane SiNan Long, Albert K. H. kong, Kinwah Wu +4
We have presented the first joint {\it XMM-Newton} and {\it NuSTAR} analysis of the millisecond pulsar (MSP) binary PSR J16530158. The 75-minute orbital period inferred from opt…
A 62-minute orbital period black widow binary in a wide hierarchical triple
Kevin B. Burdge, Thomas R. Marsh, Jim Fuller +30
Over a dozen millisecond pulsars are ablating low-mass companions in close binary systems. In the original "black widow", the 8-hour orbital period eclipsing pulsar PSR J1959+2048…
Evidence for Gamma-Ray Pulsations from the Classical Nova ASASSN-16ma
Kwan-Lok Li
We report here a new result extracted from the Fermi Large Area Telescope observation of the classical nova ASASSN-16ma that exhibits coherent gamma-ray pulsations at 544.84(7) sec…
Investigation of the timing and spectral properties of an Ultra-luminous X-ray pulsar NGC 7793 P13
Lupin Chun-Che Lin, Chin-Ping Hu, Jumpei Takata +3
We perform both timing and spectral analyses using the archival X-ray data taken with Swift, XMM-Newton, NICER, and NuSTAR from 2016 to 2020 to study an ultra-luminous pulsar, NGC…
The first nova eruption in a novalike variable: YZ Ret as seen in X-rays and gamma-rays
Kirill V. Sokolovsky, Kwan-Lok Li, Raimundo Lopes de Oliveira +16
Peaking at 3.7 mag on 2020 July 11, YZ Ret was the second-brightest nova of the decade. The nova's moderate proximity (2.7 kpc from Gaia) provided an opportunity to explore its mul…
Revealing a New Black Widow Binary 4FGL J0336.0+7502
Kwan-Lok Li, Y. X. Jane Yap, Chung Yue Hui +1
We report on a discovery of a promising candidate as a black widow millisecond pulsar binary, 4FGL J0336.0+7502, which shows many pulsar-like properties in the 4FGL-DR2 catalog. Wi…
Surveying the X-ray Behavior of Novae as They Emit -rays
Alexa C. Gordon, Elias Aydi, Kim L. Page +5
The detection of GeV -ray emission from Galactic novae by -LAT has become routine since 2010, and is generally associated with shocks internal to the nova ejecta. These s…
Fermi-LAT Observations of V549 Vel 2017: a Sub-Luminous Gamma-Ray Nova?
Kwan-Lok Li, Franz-Josef Hambsch, Ulisse Munari +4
We report on the Fermi-LAT detection (with ~5.7 sigma significance) as well as the multi-wavelength analysis of the 2017 nova eruption V549 Vel. Unlike the recent shock-powered nov…
X-ray Spectroscopy of the gamma-ray Brightest Nova V906 Car (ASASSN-18fv)
Kirill V. Sokolovsky, Koji Mukai, Laura Chomiuk +15
Shocks in gamma-ray emitting classical novae are expected to produce bright thermal and non-thermal X-rays. We test this prediction with simultaneous NuSTAR and Fermi/LAT observati…
The MAVERIC Survey: Chandra/ACIS Catalog of Faint X-ray sources in 38 Galactic globular clusters
Arash Bahramian, Jay Strader, James C. A. Miller-Jones +11
Globular clusters host a variety of lower-luminosity ( erg s) X-ray sources, including accreting neutron stars and black holes, millisecond pulsars, cataclysmic…