147 citations · 1.7k across the 59 of their papers we have counts for
8 papers · 1 filter
Fermi bubbles as a source of cosmic rays above 10^{15} eV
D. O. Chernyshov, K. S. Cheng, V. A. Dogiel +1
Fermi bubbles are giant gamma-ray structures extended north and south of the Galactic center with characteristic sizes of order of 10 kpc recently discovered by Fermi Large Area Te…
A detailed X-ray investigation of PSR J2021+4026 and -Cygni supernova remnant
C. Y. Hui, K. A. Seo, L. C. C. Lin +9
We have investigated the field around the radio-quiet -ray pulsar, PSR J2021+4026, with a ~140 ks XMM-Newton observation and a ~56 ks archival Chandra data. Through analyzing th…
Fermi-LAT Detection of Pulsed Gamma-rays Above 50 GeV from the Vela Pulsar
Gene C. K. Leung, J. Takata, C. W. Ng +4
The First \fermi-LAT Catalog of Sources Above 10 GeV reported evidence of pulsed emission above 25 GeV from 12 pulsars, including the Vela pulsar, which showed evidence of pulsatio…
NuSTAR observations and broadband spectral energy distribution modeling of the millisecond pulsar binary PSR J1023+0038
K. L. Li, A. K. H. Kong, J. Takata +4
We report the first hard X-ray (3-79 keV) observations of the millisecond pulsar (MSP) binary PSR J1023+0038 using NuSTAR. This system has been shown transiting between a low-mass…
Discovery of an ultracompact gamma-ray millisecond pulsar binary candidate
A. K. H. Kong, R. Jin, T. -C. Yen +8
We report multi-wavelength observations of the unidentified Fermi object 2FGL J1653.6-0159. With the help of high-resolution X-ray observation, we have identified an X-ray and opti…
Emission mechanism of GeV-quiet soft gamma-ray pulsars; A case for peculiar geometry?
Y. Wang, C. W. Ng, J. Takata +2
There is a growing new class of young spin-down powered pulsars called GeV-quiet soft gamma-ray pulsar; (1) spectral turnover appears around~10MeV, (2) the X-ray spectra of below 2…
Chandra detection of a new diffuse X-ray component from the globular cluster 47 Tucanae
E. M. H. Wu, C. Y. Hui, A. K. H. Kong +3
In re-analyzing the archival Chandra data of the globular cluster 47 Tucanae, we have detected a new diffuse X-ray emission feature within the half-mass radius of the cluster. The…
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…