99 citations · 146 across the 15 of their papers we have counts for
15 papers
High-Redshift Signatures from the Cosmic Dawn and the Epoch of Reionization
Rennan Barkana, Oliver Basquette, Ankita Bera +22
In this chapter, we provide a comprehensive overview of the astrophysical and cosmological processes that shape the 21-cm signal during Cosmic Dawn and the Epoch of Reionization. W…
Light curve modeling of the nearest neutron star candidate LAMOST J235456.73+335625.9
Qing-bo Han, Mouyuan Sun, Zhi-Xiang Zhang +1
The discovery of heavy radioactive elements (e.g., ) on Earth suggests that supernova explosions may have occurred near our planet within the past million years,…
Absence of Radio Emission Reveals an Exceptionally Weak Explosion of the Putative Historical Supernova Pa 30
Yi-xuan Shao, Ping Zhou, Xiao Zhang +7
We present the first deep radio continuum observations of Pa 30, a nebula hosting a unique optical source driven by an ultrafast outflow with a velocity of 16,000 km s. The…
Cosmic ray neutrons in magnetized astrophysical structures
Ellis R. Owen, Yoshiyuki Inoue, Tatsuki Fujiwara +2
Cosmic rays are often modeled as charged particles. This allows their non-ballistic propagation in magnetized structures to be captured. In certain situations, a neutral cosmic ray…
Energetic particles and high-energy processes in cosmological filaments and their astronomical implications
Kinwah Wu, Ellis R. Owen, Qin Han +2
Large-scale cosmic filaments connect galaxies, clusters and voids. They are permeated by magnetic fields with a variety of topologies. Cosmic rays with energies up to $10^{20}\;\!{…
Radiative transfer of 21-cm line through ionised cavities in an expanding universe
Kinwah Wu, Qin Han, Jennifer Y. H. Chan
The optical depth parameterisation is typically used to study the 21-cm signals associated with the properties of the neutral hydrogen (HI) gas and the ionisation morphology during…
A covariant formulation for cosmological radiative transfer of the 21-cm line
Jennifer Y. H. Chan, Qin Han, Kinwah Wu +1
The 21-cm hyperfine line of neutral hydrogen is a useful tool to probe the conditions of the Universe during the Dark Ages, Cosmic Dawn, and the Epoch of Reionisation. In most of t…
Effects of large-scale magnetic fields on the observed composition of ultra high-energy cosmic rays
Ellis R. Owen, Qin Han, Kinwah Wu
Ultra high-energy (UHE) cosmic rays (CRs) from distant sources interact with intergalactic radiation fields, leading to their spallation and attenuation. They are also deflected in…
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…
The contribution of distant sources to the observed flux of ultra high-energy cosmic rays
Ellis R. Owen, Qin Han, Kinwah Wu +2
Ultra-high-energy (UHE) cosmic rays (CRs) interact with cosmic background radiation through hadronic processes, and the Universe would become `opaque' to UHE CRs of energies …
Ultra high-energy cosmic rays from beyond the Greisen-Zatsepin-Kuz'min horizon
Ellis R. Owen, Qin Han, Kinwah Wu +2
Ultra-high-energy (UHE) cosmic rays (CRs) of energies , accelerated in violent astrophysical environments, interact with cosmic background radiatio…
Asymmetrical mass ejection from proto-white dwarfs and the formation of eccentric millisecond pulsar binaries
Qin Han, Xiang-Dong Li
Binary millisecond pulsars (MSPs) are believed to have descended from low-mass X-ray binaries (LMXBs), which have experienced substantial mass transfer and tidal circularization. T…
On the Formation of SS433
Qin Han, Xiang-Dong Li
SS433 is an extraordinary X-ray binary which is ejecting bipolar jets with of the speed of light. Associated with the supernova-like shell W50, SS433 is also probably one of…
Swift spectra of AT2018cow: A White Dwarf Tidal Disruption Event?
N. Paul M. Kuin, Kinwah Wu, Samantha Oates +19
The bright transient AT2018cow has been unlike any other known type of transient. Its high brightness, rapid rise and decay and initially nearly featureless spectrum are unpreceden…
On the orbital properties of millisecond pulsar binaries
C. Y. Hui, Kinwah Wu, Qin Han +2
We report a detailed analysis of the orbital properties of binary millisecond pulsar (MSP) with a white dwarf (WD) companion. Positive correlations between the orbital period $P_{\…