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19932026
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1,112 papers · 1 filter

astro-ph.HE2026

A Population Study for Searching Supermassive Binary Black Holes in Active Galactic Nuclei: Continuum Spectral Features and Periodic Variabilities

Zekun Li, Changshuo Yan, Youjun Lu

Active sub-pc supermassive binary black holes (SMBBHs) are expected to exhibit various electromagnetic signatures due to unique dynamical and geometric structures of their accretio…

astro-ph.HE2026

An equal mass ratio supermassive binary black holes in Q J0158-4325 with periodic microlensing signature?

Changshuo Yan, Youjun Lu, Junqiang Ge +2

This study aims to test whether a supermassive binary black hole (SMBBH) system with a triple-disk accretion structure can explain the observed 173-day periodic microlensing…

astro-ph.HE2026

Multiwavelength periodic microlensing signatures of macrolensed supermassive binary black holes

Changshuo Yan, Youjun Lu

The microlensing of lensed quasars presents a promising avenue for understanding the structure of accretion disks around supermassive binary black holes (SMBBHs). We investigated t…

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

The X-ray emission of the long-period transient and accreting cataclysmic variable ASKAP J174508.9-505149

M. Imbrogno, M. Veresvarska, Y. L. Wang +8

Long-period transients (LPTs) challenge our knowledge of the mechanism producing radio periodic pulsations in compact objects. Some LPTs have been associated with systems hosting a…

astro-ph.HE2026

Isolated neutron star candidates from the fourth generation XMM-Newton catalogues

Adriana M. Pires, Christian Motch, Jan Kurpas +9

X-ray thermally emitting isolated neutron stars (XINSs) are a rare population that provides insights into neutron star cooling, magnetic-field evolution, and Galactic demographics.…

astro-ph.HE2026★ 3 cited

Periodic Radio and X-ray Emission from an Accreting White Dwarf Binary

Kovi Rose, Joshua Pritchard, Tara Murphy +26

Long period radio transients (LPTs) are coherent bursts of polarised radio emission that repeat periodically on timescales of minutes to hours. Little is known about the physical o…

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

GRB 260310A / SN 2026fgk: A Multi-Wavelength Study of a Nearby Underluminous Long GRB and SN with a Complex Afterglow

Ramandeep Gill, Rosa L. Becerra, Antonio de Ugarte Postigo +54

We present a comprehensive multi-wavelength study of GRB 260310A / SN 2026fgk, a nearby (), long-duration gamma-ray burst (GRB) with an exceptionally underluminous prompt…

astro-ph.HE2026

Pulsar scintillation studies with LOFAR III. Annual variations in PSR~J08147429

Yanqing Cai, Ziwei Wu, Weiwei Zhu +27

The interstellar scintillation observed in radio pulsars arises from interference between electromagnetic waves scattered by electron density fluctuations in the turbulent interste…

astro-ph.HE2026★ 1 cited

A Complete X-ray View of Supernova Remnant W28 with Einstein Probe: Spatial Distribution of Parameters and Origin of the Thermal-Composite Morphology

Yi-Heng Chi, Ping Zhou, Yang Chen +6

It has been an unsolved question what leads a supernova remnant (SNR) to a thermal composite rather than a typical shell-like morphology, and what causes recombining plasma inside…

astro-ph.HE2026

The FAST Galactic Plane Pulsar Snapshot Survey. IX. Timing Three Binary Pulsars with Wide Orbits and Low Orbital Eccentricities

Z. L. Yang, J. L. Han, W. Q. Su +11

Current pulsar timing models face challenges when applied to binary pulsars with wide orbits and low orbital eccentricities. The conventional \texttt{DD} model accurately character…

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

Mass measurements of the double neutron star system PSR J0641+0448

Z. L. Yang, J. L. Han, P. F. Wang +8

Pulsar timing of double neutron star (DNS) systems is one of the best methodologies to study the neutron star masses distribution. Here we report the discovery of a double neutron…

astro-ph.HE2026

Novae breves from magnetar giant flares: Potential probes of neutron star crusts

Jiahang Zhong, Qiu-Hong Chen, Yacheng Kang +4

Matter ejected from the magnetar crust during giant flares (GFs) may undergo -process nucleosynthesis, producing short-lived optical transients termed "novae breves". Although i…

astro-ph.HE2026

The FAST Discovery of a binary millisecond pulsar PSR~J1647-0156B (M12B) with a candidate cross matching algorithm

Qiuyu Yu, Yujie Wang, Zhichen Pan +9

We propose a pulsar candidate cross matching algorithm to sift radio pulsar search candidates from repeated observations of the same sky location such as globular clusters, high en…

astro-ph.HE2026

HAWC J0630+186 Could Not Be Powered by PSR J0630+19

Bojun Wang, Xiaohong Cui, Jiguang Lu +2

3HWC J0630+186 is one of the very-high-energy gamma-ray sources in the third High-Altitude Water Cherenkov (HAWC) catalog, its origin and source are, however, not clearly identifie…

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★ 3 cited

An extreme particle accelerator powered by pulsar PSR J1849-0001

The LHAASO Collaboration

Pulsar wind nebulae (PWNe) are bubbles of relativistic particles, powered by the rotational energy loss of the central pulsars. The Crab Nebula, powered by the Milky Way's most ene…

astro-ph.HE2026★ 1 cited

Illuminating the Mass Gap Through Deep Optical Constraint on a Neutron Star Merger Candidate S250206dm

Zhengyan Liu, Zelin Xu, Ji-an Jiang +35

The gravitational wave (GW) event S250206dm, as the first well-localized neutron star merger candidate potentially located in the mass gap, presented a unique opportunity to probe…

astro-ph.HE2026

PSR J00247204ai: a massive, eccentric binary system in the globular cluster 47 Tucanae

D. Risbud, A. Ridolfi, P. C. C. Freire +9

In this paper we present PSR J00247204ai, a 13.026-ms binary pulsar recently discovered in the globular cluster 47 Tucanae by the MeerKAT radio telescope. This is the slowest sp…