Showing 2019 · astro-ph.HEShow all

14 papers · 2 filters

astro-ph.HE2019★ 22 cited

Colliding Winds in and around the Stellar Group IRS 13E at the Galactic Center

Q. Daniel Wang, Jun Li, Christopher M. P. Russell +1

IRS~13E is an enigmatic compact group of massive stars located in projection only 3.6 arcseconds away from Sgr A*. This group has been suggested to be bounded by an intermediate-ma…

astro-ph.HE2019★ 55 cited

What constraints on the neutron star maximum mass can one pose from GW170817 observations?

Shunke Ai, He Gao, Bing Zhang

The post-merger product of the first binary neutron star merger event detected in gravitational waves, GW170817, depends on neutron star equation of state (EoS) and is not well det…

astro-ph.HE2019★ 15 cited

Physical Implications of the Sub-threshold GRB GBM-190816 and its Associated Sub-threshold Gravitational Wave Event

Yi-Si Yang, Shu-Qing Zhong, Bin-Bin Zhang +10

The LIGO-Virgo and Fermi collaborations recently reported a possible joint detection of a sub-threshold gravitational wave (GW) event and a sub-threshold gamma-ray burst (GRB), GBM…

astro-ph.HE2019★ 36 cited

Insight-HXMT observations of 4U~1636-536: Corona cooling revealed with single short type-I X-ray burst

Y. P. Chen, S. Zhang, S. N. Zhang +108

Corona cooling was detected previously from stacking a series of short type-I bursts occurred during the low/had state of atoll outburst. Type-I bursts are hence regarded as sharp…

astro-ph.HE2019★ 13 cited

Timing analysis of 2S 1417-624 observed with NICER and Insight-HXMT

L. Ji, V. Doroshenko, A. Santangelo +112

We present a study of timing properties of the accreting pulsar 2S 1417-624 observed during its 2018 outburst, based on Swift/BAT, Fermi/GBM, Insight-HXMT and NICER observations. W…

astro-ph.HE2019

Constant cyclotron line energy in Hercules X-1 -- Joint Insight-HXMT and NuSTAR observations

G. C. Xiao, L. Ji, R. Staubert +108

The long-term evolution of the centroid energy of the CRSF in Her X-1 is still a mystery. We report a new measurement from a campaign between {\sl Insight}-HXMT and {\sl NuSTAR} pe…

astro-ph.HE2019★ 47 cited

Hot disk of the Swift J0243.6+6124 revealed by Insight-HXMT

V. Doroshenko, S. N. Zhang, A. Santangelo +113

We report on analysis of observations of the bright transient X-ray pulsar \src obtained during its 2017-2018 giant outburst with Insight-HXMT, \emph{NuSTAR}, and \textit{Swift} ob…

astro-ph.HE2019★ 6 cited

G4.8+6.2, a possible kilonova remnant?

Yu Liu, Yuan-Chuan Zou, Bing Jiang +3

Kilonova explosions typically release erg in kinetic energy, which is sufficient to constitute a kilonova remnant (KNR); however, it has not yet been confirmed. I…

astro-ph.HE2019★ 44 cited

Dark matter minispike: a significant enhancement of eccentricity for intermediate-mass-ratio-inspirals

Xiao-Jun Yue, Zhoujian Cao

When a stellar massive compact object, such as a black hole (BH), inspirals into an intermediate massive black hole (IMBH), an intermediate-mass-ratio-inspiral (IMRI) system forms.…

astro-ph.HE2019★ 45 cited

The shallow decay segment of GRB X-ray afterglow revisited

Litao Zhao, Binbin Zhang, He Gao +3

Based on the early-year observations from Neil Gehrels \emph{Swift} Observatory, \cite{liang07} performed a systematic analysis for the shallow decay component of gamma-ray bursts…

astro-ph.HE2019★ 35 cited

Insight-HXMT observations of Swift J0243.6+6124 during its 2017-2018 outburst

Yue Zhang, Mingyu Ge, Liming Song +107

The recently discovered neutron star transient Swift J0243.6+6124 has been monitored by {\it the Hard X-ray Modulation Telescope} ({\it Insight-\rm HXMT). Based on the obtained dat…

astro-ph.HE2019★ 36 cited

Limits on the Weak Equivalence Principle and Photon Mass with FRB 121102 Sub-pulses

Nan Xing, He Gao, Junjie Wei +5

Fast radio bursts (FRBs) are short duration (millisecond) radio transients with cosmological origin. The simple sharp features of the FRB signal have been utilized to probe t…

astro-ph.HE2019★ 3 cited

Long term variability of Swift J1753.5-0127]{Long term variability of Swift J1753.5-0127: X-ray spectral-temporal correlations during state transitions

Qingcui Bu, Lian Tao, Yu Lu +6

We studied the long-term evolution of the spectral-temporal correlated properties of the black hole candidate Swift J1753.5-0127 from the onset of its outburst until 2011 with the…

astro-ph.HE2019★ 23 cited

Viewing angle constraints on S190425z and S190426c and the joint gravitational-wave/gamma-ray detection fractions for binary neutron star mergers

Hao-Ran Song, Shun-Ke Ai, Min-Hao Wang +3

The LIGO and Virgo scientific collaboration (LVC) alerted two binary neutron star (BNS) merger candidates, S190425z and S190426c. Fermi-GBM observed 55.6\% (for S190425z) and 100\%…