Showing 2024 · astro-ph.HEShow all

47 papers · 2 filters

astro-ph.HE2024★ 12 cited

Glitch-induced pulse profile change of PSR J0742-2822 observed from the IAR

E. Zubieta, F. García, S. del Palacio +6

The radio pulsar PSR J0742-2822 is known to exhibit rapid changes between different pulse profile states that correlate with changes in its spin-down rate. However, the connection…

astro-ph.HE2024★ 25 cited

The FAST Galactic Plane Pulsar Snapshot survey: VIII. 116 binary pulsars

P. F. Wang, J. L. Han, Z. L. Yang +12

Finding pulsars in binaries are important for measurements of the masses of neutron stars, for tests of gravity theories, and for studies of star evolution. We are carrying out the…

astro-ph.HE2024★ 4 cited

Pulsar Polarization Array Limits on Ultralight Axion-like Dark Matter

Xiao Xue, Shi Dai, Hoang Nhan Luu +20

We conduct the first-ever Pulsar Polarization Array (PPA) analysis to detect the ultralight Axion-Like Dark Matter (ALDM) using the polarization data of 22 millisecond pulsars from…

astro-ph.HE2024★ 5 cited

Broadband study of the Be X-ray binary RX J0520.5-6932 during its outburst in 2024

H. N. Yang, C. Maitra, G. Vasilopoulos +18

A new giant outburst of the Be X-ray binary RX J0520.5-6932 was detected and subsequently observed with several space-borne and ground-based instruments. This study presents a comp…

astro-ph.HE2024★ 7 cited

Rapid Rotation of Polarization Orientations in PSR B1919+21's Single Pulses: Implications On Pulsar's Magnetospheric Dynamics

Shunshun Cao, Jinchen Jiang, Jaroslaw Dyks +5

We analyze and model rapid rotations of polarization orientations in PSR B1919+21's single pulses based on Five-hundred-meter Aperture Spherical radio Telescope observation data. I…

astro-ph.HE2024★ 3 cited

Seeking the nearest neutron stars using a new local electron density map

Joseph Bramante, Katherine Mack, Nirmal Raj +2

Neutron stars provide a compelling testing ground for gravity, nuclear dynamics, and physics beyond the Standard Model, and so it will be useful to locate the neutron stars nearest…

astro-ph.HE2024★ 27 cited

Measurement of Very-high-energy Diffuse Gamma-ray Emissions from the Galactic Plane with LHAASO-WCDA

The LHAASO Collaboration, Zhen Cao, F. Aharonian +312

The diffuse Galactic gamma-ray emission is a very important tool used to study the propagation and interaction of cosmic rays in the Milky Way. In this work, we report the measurem…

astro-ph.HE2024★ 2 cited

Investigating the consistency of the shape and flux of X-ray reflection spectra in the hard state with an accretion disk reaching close to the black hole

Sudeb Ranjan Datta, Michal Dovčiak, Michal Bursa +3

The observed spectra from black hole (BH) X-ray binaries (XRBs) typically consist of two primary components: multitemperature blackbody (BB) originating from the accretion disk in…

astro-ph.HE2024★ 23 cited

Recurring tidal disruption events a decade apart in IRAS F01004-2237

Luming Sun, Ning Jiang, Liming Dou +16

We report the discovery of a second optical flare that occurred in September 2021 in IRAS F01004-2237, where the first flare occurred in 2010 has been reported, and present a detai…

astro-ph.HE2024★ 21 cited

Einstein Probe discovery of EP240408a: a peculiar X-ray transient with an intermediate timescale

Wenda Zhang, Weimin Yuan, Zhixing Ling +136

We report the discovery of a peculiar X-ray transient, EP240408a, by Einstein Probe (EP) and follow-up studies made with EP, Swift, NICER, GROND, ATCA and other ground-based multi-…

astro-ph.HE2024★ 5 cited

Vetting quark-star models with gravitational waves in the hierarchical Bayesian framework

Ziming Wang, Yong Gao, Dicong Liang +2

The recent discovery of gravitational waves (GWs) has opened a new avenue for investigating the equation of state (EOS) of dense matter in compact stars, which is an outstanding pr…

astro-ph.HE2024★ 9 cited

Ultrahigh-Energy Gamma-ray Emission Associated with Black Hole-Jet Systems

The LHAASO Collaboration, Zhen Cao, Felix Aharonian +315

Black holes (BH), one of the most intriguing objects in the universe, can manifest themselves through electromagnetic radiation initiated by the accretion flow. Some stellar-mass B…

astro-ph.HE2024★ 30 cited

A fast X-ray transient from a weak relativistic jet associated with a type Ic-BL supernova

H. Sun, W. -X. Li, L. -D. Liu +163

Massive stars end their lives as core-collapse supernovae, amongst which some extremes are broad-lined type Ic supernovae from Wolf-Rayet stars associated with long-duration gamma-…

astro-ph.HE2024★ 10 cited

Effects from Dark Matter Halos on X-ray Pulsar Pulse Profiles

Yukun Liu, Hong-Bo Li, Yong Gao +2

Neutron stars (NSs) can capture dark matter (DM) particles because of their deep gravitational potential and high density. The accumulated DM can affect the properties of NSs. In t…

astro-ph.HE2024★ 11 cited

Constraining the geometry of the dipping atoll 4U 1624-49 with X-ray spectroscopy and polarimetry

Andrea Gnarini, M. Lynne Saade, Francesco Ursini +6

We present the spectro-polarimetric results obtained from simultaneous X-ray observations with IXPE, NuSTAR and NICER of the dipping neutron star X-ray binary 4U 1624-49. This sour…

astro-ph.HE2024★ 15 cited

Observation of the -ray Emission from W43 with LHAASO

Zhen Cao, F. Aharonian, Y. X. Bai +322

In this paper, we report the detection of the very-high-energy (VHE, ) and ultra-high-energy (UHE, ) -ray emissions from th…

astro-ph.HE2024★ 23 cited

Ninety percent circular polarization detected in a repeating fast radio burst

J. C. Jiang, J. W. Xu, J. R. Niu +34

Fast radio bursts (FRBs) are extra-galactic sources with unknown physical mechanisms. They emit millisecond-duration radio pulses with isotropic equivalent energy of $10^{36}\sim10…

astro-ph.HE2024★ 5 cited

Measuring the Spin of the Galactic Center Supermassive Black Hole with Two Pulsars

Zexin Hu, Lijing Shao

As a key science project of the Square Kilometre Array (SKA), the discovery and timing observations of radio pulsars in the Galactic Center would provide high-precision measurement…

astro-ph.HE2024★ 65 cited

The neutron star mass, distance, and inclination from precision timing of the brilliant millisecond pulsar J04374715

Daniel J. Reardon, Matthew Bailes, Ryan M. Shannon +17

The observation of neutron stars enables the otherwise impossible study of fundamental physical processes. The timing of binary radio pulsars is particularly powerful, as it enable…

astro-ph.HE2024★ 6 cited

Forecasting Supernova Observations with the CSST: I. Photometric Samples

Chengqi Liu, Youhua Xu, Xianmin Meng +8

The China Space Station Telescope (CSST, also known as Xuntian) is a serviceable two-meter-aperture wide-field telescope operating in the same orbit as the China Space Station. The…

astro-ph.HE2024★ 1 cited

Rapid Response Mode observations of GRB 160203A: Looking for fine-structure line variability at z=3.52

G. Pugliese, A. Saccardi, V. D Elia +26

Gamma-ray bursts are the most energetic known explosions. Despite fading rapidly, they allow to measure redshift and important properties of their host-galaxies. We report the phot…

astro-ph.HE2024★ 1 cited

A large population of neutron star low-mass X-ray binaries with long outburst recurrence time ?

E. Meyer-Hofmeister, Huaqing Cheng, B. F. Liu

Low-mass X-ray binaries (LMXBs) with neutron stars show quite different features which depend on the rate of mass transfer from the donor star. With a high transfer rate the Z sour…

astro-ph.HE2024★ 7 cited

High priority targets for transient gravitational waves from glitching pulsars

Garvin Yim, Lijing Shao, Renxin Xu

Glitching pulsars are expected to be important sources of gravitational waves. In this paper, we explore six different models that propose the emission of transient continuous wave…

astro-ph.HE2024★ 19 cited

FAST Discovery of Eight Isolated Millisecond Pulsars in NGC 6517

Dejiang Yin, Li-yun Zhang, Lei Qian +14

We present the discovery of 8 isolated millisecond pulsars in Globular Cluster (GC) NGC 6517 using the Five-Hundred-meter Aperture Spherical radio Telescope (FAST). The spin period…