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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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33 papers · 2 filters
Dense matter with eXTP
Anna L. Watts, Wenfei Yu, Juri Poutanen +73
In this White Paper we present the potential of the Enhanced X-ray Timing and Polarimetry (eXTP) mission for determining the nature of dense matter; neutron star cores host an extr…
Observations of SN 2017ein Reveal Shock Breakout Emission and A Massive Progenitor Star for a Type Ic Supernova
Danfeng Xiang, Xiaofeng Wang, Jun Mo +23
We present optical and ultraviolet observations of nearby type Ic supernova SN 2017ein as well as detailed analysis of its progenitor properties from both the early-time observatio…
Optical and radio transients after the collapse of super-Chandrasekhar white dwarf merger remnants
Yun-Wei Yu, Aming Chen, Bo Wang
Super-Chandrasekhar remnants of double white dwarf mergers could sometimes collapse into a rapidly rotating neutron star (NS), accompanying with a mass ejection of a few times $0.0…
Subdwarf B stars as possible surviving companions in Type Ia supernova remnants
Xiangcun Meng, Jiao Li
Although type Ia supernovae (SNe Ia) are so important in many astrophysical fields, a debate on their progenitor model is still endless. Searching the surviving companion in a supe…
K2 Observations of SN 2018oh Reveal a Two-Component Rising Light Curve for a Type Ia Supernova
G. Dimitriadis, R. J. Foley, A. Rest +145
We present an exquisite, 30-min cadence Kepler (K2) light curve of the Type Ia supernova (SN Ia) 2018oh (ASASSN-18bt), starting weeks before explosion, covering the moment of explo…
A 34.5 day quasi-periodic oscillation in gamma-ray emission from the blazar PKS 2247-131
Jianeng Zhou, Zhongxiang Wang, Liang Chen +5
Since 2016 October, the active galaxy PKS 2247-131 has undergone a gamma-ray outburst, which we studied using data obtained with the Fermi Gamma-ray Space Telescope. The emission a…
Impact of Plasma Instability on Constraint of the Intergalactic Magnetic Field
Dahai Yan, Jianeng Zhou, Pengfei Zhang +2
A relativistic electron-positron pair beam can be produced in the interaction of TeV photons from a blazar with the extragalactic background light (EBL). The relativistic …
Statistical Study of the Swift X-ray Flash and X-ray Rich Gamma-Ray Bursts
Xiongwei Bi, Jirong Mao, Chuanxi Liu +1
We build a comprehensive sample to statistically describe the properties of X-ray flashes (XRFs) and X-ray riches (XRRs) from the latest third Swift Burst Alert Telescope (BAT3) ca…
A gamma-ray periodic modulation in Globular Cluster 47 Tucanae
Peng-Fei Zhang, Jia-Neng Zhou, Da-Hai Yan +4
The Globular Cluster 47 Tucanae was firstly detected in gamma-rays by the Large Area Telescope (LAT) onboard the \emph{Fermi} Gamma-ray Space Telescope, and the gamma-ray emission…
The first 48: Discovery and progenitor constraints on the Type Ia supernova 2013gy
S. Holmbo, M. D. Stritzinger, B. J. Shappee +26
We present an early-phase -band light curve and visual-wavelength spectra of the normal Type Ia supernova (SN) 2013gy. The light curve is constructed by determining the appropri…
Statistical analysis on XMM-Newton X-ray flares of Mrk 421: distributions of peak flux and flaring time duration
Dahai Yan, Shenbang Yang, Pengfei Zhang +3
The energy dissipation mechanism in blazar jet is unknown. Blazar's flares could provide insights on this problem. Here we report statistical results of XMM-Newton X-ray flares of…
Insight-HXMT observations of the New Black Hole Candidate MAXI J1535-571: timing analysis
Y. Huang, J. L. Qu, S. N. Zhang +118
We present the X-ray timing results of the new black hole candidate (BHC) MAXI J1535-571 during its 2017 outburst from Hard X-ray Modulation Telescope (\emph{Insight}-HXMT) observa…
GeV-TeV -ray energy spectral break of BL Lac objects
W. Zhong, W. G. Liu, Y. G. Zheng
In this paper, we compile the very-high-energy and high-energy spectral indices of 43 BL Lac objects from the literature. Based on a simple math model, , we p…
Compact radio emission indicates a structured jet was produced by a binary neutron star merger
G. Ghirlanda, O. S. Salafia, Z. Paragi +33
The binary neutron star merger event GW170817 was detected through both electromagnetic radiation and gravitational waves. Its afterglow emission may have been produced by either a…
Multi-wavelength observations of a new redback millisecond pulsar candidate: 3FGL J0954.8-3948
Kwan-Lok Li, Xian Hou, Jay Strader +6
We present a multi-wavelength study of the unassociated Fermi-LAT source, 3FGL J0954.8-3948, which is likely the gamma-ray counterpart of a 9.3-hour binary in the field. With more…
Seeing Double: ASASSN-18bt Exhibits a Two-Component Rise in the Early-Time K2 Light Curve
B. J. Shappee, T. W. -s. Holoien, M. R. Drout +109
On 2018 Feb. 4.41, the All-Sky Automated Survey for SuperNovae (ASAS-SN) discovered ASASSN-18bt in the K2 Campaign 16 field. With a redshift of z=0.01098 and a peak apparent magnit…
Secondary-electron radiation accompanying hadronic GeV-TeV gamma-rays from supernova remnants
Yan Huang, Zhuo Li, Wei Wang +1
The synchrotron radiation from secondary electrons and positrons (SEPs) generated by hadronic interactions in the shock of supernova remnant (SNR) could be a distinct evidence of c…
Synchrotron Polarization Radiative Transfer: Relativistic Thermal Electrons Contribution
Jirong Mao, Stefano Covino, Jiancheng Wang
Relativistic thermal electrons moving in a large-scale magnetic field can produce synchrotron radiation. Linear synchrotron polarization can also be produced by the relativistic th…
Formation of the Electronic Spectrum in Relativistic Jets of Gamma-Ray Blazars
Y. G. Zheng, G. B. Long, C. Y. Yang +1
We describe the theory of Fermi-type acceleration, including first-order Fermi acceleration at a parallel shock front and second-order Fermi acceleration in a test particle limit.…
Optical Observations of the Young Type Ic Supernova SN 2014L in M99
Jujia Zhang, Xiaofeng Wang, József Vinkó +22
We present optical spectroscopic and photometric observations of the nearby type Ic supernova (SN Ic) SN 2014L. This SN was discovered by the Tsinghua-NAOC Transient Survey (TNTS)…
Verification of the diffusive shock acceleration in Mrk 501
Y. G. Zheng, G. B. Long, C. Y. Yang +1
The present work considers a plane shock front propagating along a cylindrical jet. Electrons experience the diffusive shock acceleration around the shock front, and subsequently d…
A lower occurrence rate of bright X-ray flares in SN-GRBs than GRBs: evidence of energy partitions?
Hui-Jun Mu, Wei-Min Gu, Jirong Mao +6
The occurrence rates of bright X-ray flares in z<1 gamma-ray bursts (GRBs) with or without observed supernovae (SNe) association were compared. Our Sample I: the z<1 long GRBs (LGR…
Optical Observations of the 2002cx-like Supernova 2014ek, and Characterizations of SNe Iax
Linyi Li, Xiaofeng Wang, Jujia Zhang +14
We present optical observations of supernova (SN) 2014ek discovered during the Tsinghua-NAOC Transient Survey (TNTS), which shows properties that are consistent with those of SN 20…
Testing relativistic boost as the cause of gamma-ray quasi-periodic oscillation in a blazar
Dahai Yan, Jianeng Zhou, Pengfei Zhang +2
The mechanism for producing gamma-ray quasi-periodic oscillation (QPO) in blazar is unknown. One possibility is the geometric model, in which without the need for intrinsic quasi-p…