Showing 2026 · astro-ph.HEShow all

19 papers · 2 filters

astro-ph.HE2026

A Massive and Eccentric Binary Millisecond Pulsar in the Globular Cluster M10

Yujie Wang, Zhongli Zhang, Zhichen Pan +4

We present the timing solution of the millisecond pulsar PSR J1657-0406A in the globular cluster M10, based on observations performed with the Five-hundred-meter Aperture Spherical…

astro-ph.HE2026

A Pilot Study of Mildly Recycled Pulsars: A Case Study of PSR J2338+4818

Yujie Chen, Yujie Lian, Yujie Wang +18

Mildly recycled pulsars are neutron stars partially spun up through relatively short mass-transfer phases, typically with massive carbon-oxygen (CO) or oxygen-neon-magnesium (ONeMg…

astro-ph.HE2026

Improved proper motion and gravity tests with PSR J1913+1102

Xueli Miao, Paulo C. C. Freire, Norbert Wex +11

PSR J1913+1102 is a highly asymmetric double neutron star system and an excellent laboratory for testing scalar-tensor gravity theories, as well as a potential progenitor analogue…

astro-ph.HE2026

From One to Two: A Second Binary Millisecond Pulsar in the Globular Cluster M92 (NGC 6341)

Dejiang Yin, Li-yun Zhang, Baoda Li +4

We report the discovery and phase connected-timing solution of a second millisecond binary pulsar, PSR J1717+4308B (M92B), in the globular cluster M92 (NGC 6341) using the Five-hun…

astro-ph.HE2026

Indication for Decreasing Dispersion Measure in the Population of Repeating Fast Radio Bursts and Connection to Young Supernova Remnant Expansion

Xiang-han Cui, Cheng-min Zhang, Di Li +8

Fast Radio Bursts (FRBs) are millisecond-duration, highly energetic radio transients of uncertain origin. Repeating FRBs provide an excellent population for investigating their nat…

astro-ph.HE2026

Fast radio bursts, magnetars and earthquakes: their "family feud"?

Si-Lu Xu, Yong-Kun Zhang, Pei Wang +24

Fast radio bursts (FRBs) are millisecond-duration cosmic transients whose origin remains elusive. Competing models invoke either earthquake-like processes or flare-like mechanisms.…

astro-ph.HE2026

Multiwavelength Analysis of PSR J0437-4715 with Pulse Profile Modeling

Liqiang Qi, Juan Zhang, Weiwei Xu +6

We present a multi-wavelength analysis of the nearby millisecond pulsar PSR J0437--4715, combining Hubble Space Telescope (HST) far-ultraviolet, ROSAT soft X-ray, and XMM-Newton X-…

astro-ph.HE2026

Testing Weak Equivalence Principle with IceCube Event and Blazar

Tian-Cong Wang, Aleksandra Piorkowska - Kurpas, Marek Biesiada +1

Einstein's Weak Equivalence Principle (WEP), the universality of free fall, is a fundamental component of general relativity and other metric theories of gravity. Its validity can…

astro-ph.HE2026

A Candidate Open Cluster Pulsar: Timing Analysis of PSR J1922+3745 in NGC 6791

Xiao-Jin Liu, Ralph P. Eatough, Zhichen Pan +15

PSR J1922+3745 was recently identified as a radio pulsar toward the old open cluster NGC 6791, raising the prospect of the first pulsar associated with an open cluster. We report F…

astro-ph.HE2026

Spectral Dataset of Stripped-Envelope Supernovae from the Tsinghua Supernova Group

Danfeng Xiang, Xiaofeng Wang, Jujia Zhang +40

The extent of envelope stripping in the progenitor stars is directly reflected in the diversity of spectral features observed in stripped-envelope supernovae (SESNe). Through exten…

astro-ph.HE2026★ 1 cited

Multi-epoch afterglow rebrightenings in GRB 250129A: Evidence for successive shock interactions

D. Akl, S. Antier, H. Koehn +105

Most long gamma-ray bursts (GRBs) exhibit afterglows broadly consistent with external forward-shock emission, typically described by smooth broken power-law decays in the multiband…

astro-ph.HE2026

Search for Periodic Radio Signals from Double Neutron Star System Companions Using the Fast Folding Algorithm

Wenze Li, Zhichen Pan, Lei Qian +14

As most of the companions in the double neutron star systems should be normal pulsars, the Fast Folding Algorithm (FFA), which is suitable for finding these long spin period pulsar…

astro-ph.HE2026

Constraining the Pulsar 3D Velocity Distribution: The Impact of Spin-Velocity Alignment

Zheng Li, Xiaojin Liu, Zhi-Qiang You +2

Quantifying the natal kick distribution of pulsars is essential for understanding supernova physics and binary evolution, yet measurements are historically limited by the lack of r…

astro-ph.HE2026

Kinematic Evidence for Open Cluster Origins of Galactic Binary Neutron Stars

Wen-Jie Yu, Lu Zhou, Zhi-Qiang You +4

We investigate the potential birthplace of Galactic binary neutron star (BNS) systems through a kinematic analysis. Using high-precision astrometry from Gaia DR3, updated pulsar di…

astro-ph.HE2026★ 4 cited

Searching for Anisotropy in the Gravitational Wave Background Using the Parkes Pulsar Timing Array

Yiqin Chen, Shi-Yi Zhao, Zhi-Zhang Peng +17

In recent years, several pulsar timing array collaborations have reported evidence for a nanohertz gravitational wave background (GWB). Such a background signal could be produced b…

astro-ph.HE2026★ 1 cited

An Archival Optical Counterpart Search for Extragalactic Fast X-Ray Transients Discovered by Einstein Probe

Run-Duo Liang, Wen-Xiong Li, Liang-Duan Liu +50

Extragalactic fast X-ray transients (eFXTs) represent a rapidly growing class of high-energy phenomena, whose physical origins remain poorly understood. With its wide-field, sensit…

astro-ph.HE2026

The X-ray properties and structure of A3571 up to

X. Zheng, H. Yu, S. Jia +22

Abell 3571 is a nearby, X-ray bright galaxy cluster located in the Shapley Supercluster. Although it appears morphologically relaxed in X-ray images, multiwavelength observations r…

astro-ph.HE2026★ 1 cited

A Tidal Disruption Event from an Intermediate-mass Black Hole Revealed by Comprehensive Multi-wavelength Observations

Jialai Wang, Mengqiu Huang, Yongquan Xue +12

Tidal disruption events (TDEs) occur when a star crosses the tidal radius of a black hole (BH) and is ripped apart, providing a powerful way to probe dormant BHs over a wide mass r…

astro-ph.HE2026

Minutes-long soft X-ray prompt emission from a compact object merger

An Li, Chen-Wei Wang, Niccolò Passaleva +75

Compact object mergers are multi-messenger sources and known progenitors of some gamma-ray bursts, bright flashes of high-energy radiation powered by a central engine, either an ac…