Showing 2025 · astro-ph.HEShow all

34 papers · 2 filters

astro-ph.HE2025★ 6 cited

Detection of disk-jet co-precession in a tidal disruption event

Yanan Wang, Zikun Lin, Linhui Wu +46

Theories and simulations predict that intense spacetime curvature near black holes bends the trajectories of light and matter, driving disk and jet precession under relativistic to…

astro-ph.HE2025★ 1 cited

Galactic Centre Pulsars with the SKAO

F. Abbate, A. Carleo, S. Chatterjee +19

The detection of a pulsar closely orbiting our Galaxy's supermassive black hole - Sagittarius A* - is one of the ultimate prizes in pulsar astrophysics. The relativistic effects ex…

astro-ph.HE2025★ 1 cited

Frequency- and phase-resolved polarimetry of millisecond pulsars and its application to timing

Małgorzata Curyło, Andrew Zic, Shuangqiang Wang +16

Pulsar timing is used for a variety of applications including tests of fundamental physics, probing the structure of neutron stars, and detecting nanohertz gravitational waves. Dev…

astro-ph.HE2025★ 3 cited

Non-thermal Synchrotron Emission and Polarization Signatures during Black Hole Flux Eruptions

Fan Zhou, Jiewei Huang, Yuehang Li +4

In this work, we investigate synchrotron emission and the observational signatures of anisotropic non-thermal electrons during magnetic-flux eruptions in a magnetically arrested di…

astro-ph.HE2025

From Observations to Simulations: A Neural-Network Approach to Intracluster Medium Kinematics

E. Gatuzz, J. ZuHone, J. S. Sanders +4

We present a systematic comparison between {\it XMM-Newton} velocity maps of the Virgo, Centaurus, Ophiuchus and A3266 clusters and synthetic velocity maps generated from the Illus…

astro-ph.HE2025★ 3 cited

Measurement of cosmic-ray muon flux at CJPL-II

P. Zhang, H. Ma, W. Dai +5

In China Jinping Underground Laboratory (CJPL), the deepest and largest underground laboratory globally, the cosmic-ray muon flux is significantly reduced due to the substantial sh…

astro-ph.HE2025★ 2 cited

The Quiescent Merging Nature of the Coma Cluster Revealed by ICM Velocity Structure

E. Gatuzz, J. Sanders, A. Liu +4

The hot gas permeating galaxy clusters-the intracluster medium (ICM)-is a key tracer of their assembly history and internal dynamics. Understanding the motion of this gas provides…

astro-ph.HE2025

Detecting FRB by DANCE: a method based on DEnsity ANalysis and Cluster Extraction

Mao Yuan, Jiarui Niu, Yi Feng +7

Fast radio bursts (FRBs) are transient signals exhibiting diverse strengths and emission bandwidths. Traditional single-pulse search techniques are widely employed for FRB detectio…

astro-ph.HE2025

Beyond the Simple Power Law: A Bayesian Analysis of 897 Pulsar Spectra

Qingzheng Gao, Xiao-Jin Liu, Zhi-Qiang You +2

We present a comprehensive re-evaluation of pulsar radio spectra using the largest curated dataset of calibrated flux densities to date, comprising 897 pulsars, and employing a rob…

astro-ph.HE2025★ 6 cited

The double neutron star PSR J1946+2052 I. Masses and tests of general relativity

Lingqi Meng, Paulo C. C. Freire, Kevin Stovall +28

We conducted high-precision timing of PSR J1946+2052 to determine the masses of the two neutron stars in the system, test general relativity (GR) and assessed the system's potentia…

astro-ph.HE2025

Discovery and Timing Follow-Up of Two FAST-Discovered Pulsars from the FAST CRAFTS Survey

Victoria A. Blackmon, Maura A. McLaughlin, De Zhao +6

We present the results of Green Bank Telescope (GBT) observations of two pulsars discovered with the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) during the 19-beam…

astro-ph.HE2025★ 1 cited

Imaging and Polarimetric Signatures of Konoplya-Zhidenko Black Holes with Various Thick Disk

Xinyu Wang, Yukang Wang, Xiao-Xiong Zeng

We investigate the imaging properties of spherically symmetric Konoplya-Zhidenko (KZ) black holes surrounded by geometrically thick accretion flows, adopting a phenomenological rad…

astro-ph.HE2025★ 5 cited

Ultra-Wideband Polarimetry of the April 2021 Profile Change Event in PSR J1713+0747

Rami F. Mandow, Andrew Zic, J. R. Dawson +15

The millisecond pulsar PSR J1713+0747 is a high-priority target for pulsar timing array experiments due to its long-term timing stability, and bright, narrow pulse profile. In Apri…

astro-ph.HE2025★ 4 cited

Reverberation lags viewed in hard X-rays from an accreting stellar-mass black hole

Bei You, Wei Yu, Adam Ingram +5

Accreting black holes are thought to swallow matter in the form of a disk and a hot cloud of plasma that glows brightly in X-rays, known as the corona. The X-ray emitting region is…

astro-ph.HE2025

The magnetar model's energy crisis for a prolific repeating fast radio burst source

Jun-Shuo Zhang, Tian-Cong Wang, Pei Wang +61

Fast radio bursts (FRBs) are widely considered to originate from magnetars that power the explosion through releasing magnetic energy. Active repeating FRBs have been seen to produ…

astro-ph.HE2025★ 1 cited

EP250207b is not a collapsar fast X-ray transient. Is it due to a compact object merger?

P. G. Jonker, A. J. Levan, Xing Liu +41

Fast X-ray Transients (FXTs) are short-lived extra-galactic X-ray sources. Recent progress through multi-wavelength follow-up of Einstein Probe discovered FXTs has shown that sever…

astro-ph.HE2025★ 6 cited

A narrowband burst from FRB 20190520B simultaneously observed by FAST and Parkes

Yuhao Zhu, Chenhui Niu, Shi Dai +8

Fast Radio Bursts (FRBs) are short-duration radio transients with mysterious origins. Since its uncertainty, there are very few FRBs that are observed by different instruments, sim…

astro-ph.HE2025★ 2 cited

Imaging-spectroscopy diagnosis of the giant sloshing spiral in the Virgo cluster with the Einstein Probe Follow-up X-ray Telescope

X. Zheng, S. Jia, C. Li +46

We performed deep X-ray observations of the Virgo cluster using the Einstein Probe Follow-up X-ray Telescope (EP-FXT) with a total exposure of 295 ks. Leveraging the large field of…

astro-ph.HE2025

Decadal evolution of a repeating fast radio burst source

P. Wang, J. S. Zhang, Y. P. Yang +48

The origin of fast radio bursts (FRBs), the brightest cosmic radio explosions, is still unknown. Bearing critical clues to FRBs' origin, the long-term evolution of FRBs has yet to…

astro-ph.HE2025★ 3 cited

Einstein Probe discovery of the short period intermediate polar EP J115415.8-501810

Y. Xiao, M. Ge, N. Rea +21

The X-ray transient source EP240309a/EP\,J115415.8501810 was first detected by the Wide-Field X-ray Telescope (WXT) on board Einstein Probe (EP) during the commissioning phase.…

astro-ph.HE2025★ 10 cited

Multi-year Polarimetric Monitoring of Four CHIME-Discovered Repeating Fast Radio Bursts with FAST

Yi Feng, Yong-Kun Zhang, Jintao Xie +50

In this study, we report multi-year polarization measurements of four repeating FRBs initially discovered by CHIME: FRBs~20190117A, 20190208A, 20190303A, and 20190417A. We observed…

astro-ph.HE2025★ 2 cited

A Comprehensive Study of the Energy and Redshift Distributions of the Fast Radio Burst Population Based on the First CHIME/FRB Catalog

Qing-Zhen Lei, Xin-Zhe Wang, Can-Min Deng

Fast radio bursts (FRBs) are brief, high-energy bursts of radio waves from extragalactic sources, and their origin remains an open question. In this paper, we perform a comprehensi…

astro-ph.HE2025★ 4 cited

A comprehensive search for Long and Short Periodic Features from an Extremely Active Cycle of FRB 20240114A

Dengke Zhou, Pei Wang, Jianhua Fang +56

Possible periodic features in fast radio bursts (FRBs) may provide insights into their astrophysical origins. Using extensive observations from the Five-hundred-meter Aperture Sphe…

astro-ph.HE2025★ 6 cited

Prospects for Time-Domain and Multi-Messenger Science with eXTP

Shu-Xu Yi, Wen Zhao, Ren-Xin Xu +75

In this new era of time-domain and multi-messenger astronomy, various new transients and new phenomena are constantly being discovered thanks to the rapid advances in observations,…