97 citations · 751 across the 27 of their papers we have counts for
27 papers
Discovery of X-ray Polarization from the Black Hole Transient Swift J1727.8-1613
Alexandra Veledina, Fabio Muleri, Michal Dovciak +113
We report the first detection of the X-ray polarization of the bright transient Swift J1727.8-1613 with the Imaging X-ray Polarimetry Explorer. The observation was performed at the…
Constraining annihilating dark matter mass by the radio continuum spectral data of a high-redshift galaxy cluster
Man Ho Chan, Chak Man Lee, C. -Y. Ng +1
In the past decade, the properties of annihilating dark matter models were examined by various kinds of data, including the data of gamma rays, radio waves, X-ray, positrons, elect…
On the connection between radiative outbursts and timing irregularities in magnetars
Chin-Ping Hu, C. -Y. Ng
Magnetars are strongly magnetized pulsars and they occasionally show violent radiative outbursts. They also often exhibit glitches which are sudden changes in the spin frequency. I…
A systematic study of soft X-ray pulse profiles of magnetars in quiescence
Chin-Ping Hu, C. -Y. Ng, Wynn C. G. Ho
Magnetars are neutron stars with extremely high surface magnetic fields. They show diverse X-ray pulse profiles in the quiescent state. We perform a systematic Fourier analysis of…
Investigation of the High-Energy Emission from the Magnetar-like Pulsar PSR J1119-6127 after the 2016 Outburst
Lupin Chun-Che Lin, Hui-Hui Wang, Kwan-Lok Li +7
PSR J1119-6127 is a radio pulsar that behaved magnetar like bursts, and we performed a comprehensive investigation of this pulsar using the archival high-energy observations obtain…
The 30-Year Search for the Compact Object in SN 1987A
Dennis Alp, Josefin Larsson, Claes Fransson +32
Despite more than 30 years of searches, the compact object in Supernova (SN) 1987A has not yet been detected. We present new limits on the compact object in SN 1987A using millimet…
The Mouse Pulsar Wind Nebula
Noel Klingler, Oleg Kargaltsev, George G. Pavlov +3
The young energetic pulsar J1747-2958 ( kyr, erg s) powers the Mouse pulsar wind nebula (PWN), famous for its spectacular tail spanning 45$…
Simultaneous 13 cm/3 cm single-pulse observations of PSR B0329+54
Zhen Yan, Zhi-Qiang Shen, Richard N. Manchester +10
We have investigated the mode-changing properties of PSR B0329+54 using 31 epochs of simultaneous 13 cm/3 cm single-pulse observations obtained with Shanghai Tian Ma 65 m telescope…
X-Ray Observations of Magnetar SGR 0501+4516 from Outburst to Quiescence
Y. -L. Mong, C. -Y. Ng
Magnetars are neutron stars having extreme magnetic field strengths. Study of their emission properties in quiescent state can help understand effects of a strong magnetic field on…
A Second Chromatic Timing Event of Interstellar Origin toward PSR J1713+0747
M. T. Lam, J. A. Ellis, G. Grillo +34
The frequency dependence of radio pulse arrival times provides a probe of structures in the intervening media. Demorest et al. 2013 was the first to show a short-term (~100-200 day…
Discovery of a Synchrotron Bubble Associated with PSR J1015-5719
C. -Y. Ng, R. Bandiera, R. W. Hunstead +1
We report the discovery of a synchrotron nebula, G283.1-0.59, associated with PSR J1015-5719. Radio observations using the Molonglo Observatory Synthesis Telescope and the Australi…
The X-ray Decay of the ultraluminous supernova SN 1978K in NGC 1313
Hai-Hui Zhao, Shan-Shan Weng, C. -Y. Ng
The Type IIn supernova (SN) 1978K in the nearby galaxy NGC 1313 has remained bright in multiwavelengths for more than yr. The archival data of SN 1978K collected with ROS…
Geminga's puzzling pulsar wind nebula
B. Posselt, G. G. Pavlov, P. O. Slane +6
We report on six new Chandra observations of the Geminga pulsar wind nebula (PWN). The PWN consists of three distinct elongated structures - two pc long later…
Multiwavelength monitoring and X-ray brightening of Be X-ray binary PSR J2032+4127/MT91 213 on its approach to periastron
Wynn C. G. Ho, C. -Y. Ng, Andrew G. Lyne +5
The radio and gamma-ray pulsar PSR J2032+4127 was recently found to be in a decades-long orbit with the Be star MT91 213, with the pulsar moving rapidly towards periastron. This bi…
Chandra Observations of Outflows from PSR J1509-5850
Noel Klingler, Oleg Kargaltsev, Blagoy Rangelov +3
PSR J1509-5850 is a middle-aged pulsar with the period P ~ 89 ms, spin-down power Edot = 5.1 x 10^35 erg/s, at a distance of about 3.8 kpc. We report on deep Chandra X-ray Observat…
Hunting for Orphaned Central Compact Objects among Radio Pulsars
J. Luo, C. -Y. Ng, W. C. G. Ho +3
Central compact objects (CCOs) are a handful of young neutron stars found at the center of supernova remnants (SNRs). They show high thermal X-ray luminosities but no radio emissio…
Discovery of X-ray Pulsations from the INTEGRAL Source IGR J11014-6103
J. P. Halpern, J. A. Tomsick, E. V. Gotthelf +6
We report the discovery of PSR J1101-6101, a 62.8 ms pulsar in IGR J11014-6103, a hard X-ray source with a jet and a cometary tail that strongly suggests it is moving away from the…
Multi-dimensional simulations of the expanding supernova remnant of SN 1987A
T. M. Potter, L. Staveley-Smith, B. Reville +4
The expanding remnant from SN 1987A is an excellent laboratory for investigating the physics of supernovae explosions. There are still a large number of outstanding questions, such…
Constraining the Evolutionary Fate of Central Compact Objects: "Old" Radio Pulsars in Supernova Remnants
Slavko Bogdanov, C. -Y. Ng, Victoria M. Kaspi
Central compact objects (CCOs) constitute a population of radio-quiet, slowly-spinning (100 ms) young neutron stars with anomalously high thermal X-ray luminosities. Their spi…
Fermi Variability Study of the Candidate Pulsar Binary 2FGL~J0523.3-2530
Yi Xing, Zhongxiang Wang, C. -Y. Ng
The Fermi source 2FGL~J0523.32530 has recently been identified as a candidate millisecond pulsar binary with an orbital period of 16.5 hrs. We have carried out detailed studies…
High-Energy Emission of the First Millisecond Pulsar
C. -Y. Ng, J. Takata, G. C. K. Leung +2
We report on X-ray and gamma-ray observations of the millisecond pulsar B1937+21 taken with the Chandra X-ray Observatory, XMM-Newton, and the Fermi Large Area Telescope. The pulsa…
Searching for Debris Disks around Seven Radio Pulsars
Z. Wang, C. -Y. Ng, X. Wang +2
We report on our searches for debris disks around seven relatively nearby radio pulsars, which are isolated sources and were carefully selected as the targets on the basis of our d…
Radio Observations of Supernova 1987A
L. Staveley-Smith, T. M. Potter, G. Zanardo +2
Supernovae and their remnants are believed to be prodigious sources of Galactic cosmic rays and interstellar dust. Understanding the mechanisms behind their surprisingly high produ…
A Chandra Proper Motion for PSR J1809-2332
Adam Van Etten, Roger W. Romani, C. -Y. Ng
We report on a new Chandra exposure of PSR J1809-2332, the recently discovered pulsar powering the bright EGRET source 3EG J1809-2328. By registration of field X-ray sources in an…