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19942026
most citedA Massive Pulsar in a Compact Relativistic Binary

3.9k citations

Showing 2024 · astro-ph.HEShow all

25 papers · 2 filters

astro-ph.HE2024★ 19 cited

The MeerKAT Pulsar Timing Array: Maps of the gravitational-wave sky with the 4.5 year data release

Kathrin Grunthal, Rowina S. Nathan, Eric Thrane +16

In an accompanying publication, the MeerKAT Pulsar Timing Array (MPTA) collaboration reports tentative evidence for the presence of a stochastic gravitational-wave background, foll…

astro-ph.HE2024★ 94 cited

The MeerKAT Pulsar Timing Array: The first search for gravitational waves with the MeerKAT radio telescope

Matthew T. Miles, Ryan M. Shannon, Daniel J. Reardon +22

Pulsar Timing Arrays search for nanohertz-frequency gravitational waves by regularly observing ensembles of millisecond pulsars over many years to look for correlated timing residu…

astro-ph.HE2024★ 45 cited

The MeerKAT Pulsar Timing Array: The -year data release and the noise and stochastic signals of the millisecond pulsar population

Matthew T. Miles, Ryan M. Shannon, Daniel J. Reardon +21

Pulsar timing arrays are ensembles of regularly observed millisecond pulsars timed to high precision. Each pulsar in an array could be affected by a suite of noise processes, most…

astro-ph.HE2024★ 3 cited

Evidence for the spin-kick alignment of pulsars from the statistics of their magnetic inclinations

Anton Biryukov, Gregory Beskin

It is thought that isolated neutron stars receive a natal kick velocity at birth nearly aligned with their spin axis. Direct observational confirmation of this alignment is current…

astro-ph.HE2024

The thermodynamic structure and large-scale structure filament in MACS J0717.5+3745

J. P. Breuer, N. Werner, T. Plšek +12

We present the results of Chandra and XMM-Newton X-ray imaging and spatially resolved spectroscopy, as well as new MUSTANG2 90 GHz observations of the thermal Sunyaev-Zeldovich eff…

astro-ph.HE2024★ 2 cited

A new method of reconstructing images of gamma-ray telescopes applied to the LST-1 of CTAO

CTA-LST Project, :, K. Abe +305

Imaging atmospheric Cherenkov telescopes (IACTs) are used to observe very high-energy photons from the ground. Gamma rays are indirectly detected through the Cherenkov light emitte…

astro-ph.HE2024

A probe of the maximum energetics of fast radio bursts through a prolific repeating source

O. S. Ould-Boukattine, P. Chawla, J. W. T. Hessels +12

Fast radio bursts (FRBs) are sufficiently energetic to be detectable from luminosity distances up to at least seven billion parsecs (redshift ). Probing the maximum energies…

astro-ph.HE2024★ 25 cited

Constraining a relativistic mean field model using neutron star mass-radius measurements II: Hyperonic models

Chun Huang, Laura Tolos, Constança Providência +1

We investigate whether measurements of the neutron star mass and radius or the tidal deformability can provide information about the presence of hyperons inside a neutron star. Thi…

astro-ph.HE2024★ 5 cited

Revealing the state transition of Cen X-3 at high spectral resolution with Chandra

Graciela Sanjurjo-Ferrín, Jose Miguel Torrejón, Lida Oskinova +4

Cen X-3 is a compact, high-mass X-ray binary (HMXRB), likely powered by Roche lobe overflow. We present a phase-resolved X-ray spectral and timing analysis of a target of opportuni…

astro-ph.HE2024★ 2 cited

Parameter constraints for accreting millisecond pulsars with synthetic NICER data

Bas Dorsman, Tuomo Salmi, Anna L. Watts +10

Pulse profile modelling (PPM) is a technique for inferring mass, radius and hotspot properties of millisecond pulsars. PPM is now regularly used for analysis of rotation-powered mi…

astro-ph.HE2024★ 6 cited

Back from the dead: AT2019aalc as a candidate repeating TDE in an AGN

Patrik Milán Veres, Anna Franckowiak, Sjoert van Velzen +15

Context. To date, three nuclear transients have been associated with high-energy neutrino events. These transients are generally thought to be powered by tidal disruptions of stars…

astro-ph.HE2024★ 18 cited

A Nançay Radio Telescope study of the hyperactive repeating FRB 20220912A

David C. Konijn, Danté M. Hewitt, Jason W. T. Hessels +8

The repeating fast radio burst source FRB 20220912A was remarkably active in the weeks after its discovery. Here we report 696 bursts detected with the Nançay Radio Telescope (NRT)…

astro-ph.HE2024★ 273 cited

A NICER View of the Nearest and Brightest Millisecond Pulsar: PSR J0437$\unicode{x2013}$4715

Devarshi Choudhury, Tuomo Salmi, Serena Vinciguerra +17

We report Bayesian inference of the mass, radius and hot X-ray emitting region properties - using data from the Neutron Star Interior Composition ExploreR (NICER) - for the brighte…

astro-ph.HE2024★ 24 cited

Ultrasoft state of microquasar Cygnus X-3: X-ray polarimetry reveals the geometry of astronomical puzzle

Alexandra Veledina, Juri Poutanen, Anastasiia Bocharova +17

Cygnus X-3 is an enigmatic X-ray binary, that is both an exceptional accreting system and a cornerstone for the population synthesis studies. Prominent X-ray and radio properties f…

astro-ph.HE2024★ 35 cited

IXPE observation of PKS 2155-304 reveals the most highly polarized blazar

Pouya M. Kouch, Ioannis Liodakis, Riccardo Middei +133

We report the X-ray polarization properties of the high-synchrotron-peaked (HSP) blazar PKS 2155304 based on observations with the Imaging X-ray Polarimetry Explorer (IXPE). We…

astro-ph.HE2024

Superbubbles as Galactic PeVatrons: The Potential Role of Rapid Second-Order Fermi Acceleration

Jacco Vink

Context: The origin of Galactic cosmic rays is still a mystery, in particular the sources and acceleration mechanism for cosmic rays with energies up to or beyond a PeV. Recently L…

astro-ph.HE2024★ 10 cited

On Innermost Stable Spherical Orbits near a rotating black hole: A numerical study of the particle motion near the plunging region

Ondřej Kopáček, Vladimír Karas

According to General Relativity, astrophysical black holes are described by a small number of parameters. Apart from the mass of the black hole (M), among the most interesting char…

astro-ph.HE2024★ 41 cited

Constraining the Properties of the Thermonuclear Burst Oscillation Source XTE J1814-338 Through Pulse Profile Modelling

Yves Kini, Tuomo Salmi, Serena Vinciguerra +8

Pulse profile modelling (PPM) is a comprehensive relativistic ray-tracing technique employed to determine the properties of neutron stars. In this study, we apply this technique to…

astro-ph.HE2024★ 7 cited

Galactic transient sources with the Cherenkov Telescope Array Observatory

Cherenkov Telescope Array Observatory Consortium

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…

astro-ph.HE2024★ 3 cited

Black hole outflows initiated by a large-scale magnetic field

Bestin James, Agnieszka Janiuk, Vladimir Karas

Accreting black hole sources show variable outflows at different mass scales. For instance, in the case of galactic nuclei, our own galactic center Sgr A* exhibits flares and outbu…

astro-ph.HE2024★ 23 cited

Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined Fermi-LAT and H.E.S.S. analysis

F. Aharonian, F. Ait Benkhali, J. Aschersleben +158

The Crab Nebula is a unique laboratory for studying the acceleration of electrons and positrons through their non-thermal radiation. Observations of very-high-energy rays from…

astro-ph.HE2024★ 14 cited

Broadband X-ray/UV/optical time-resolved spectroscopy of NGC 5548: The origin of the UV/optical variability in active galactic nuclei

E. Kammoun, I. E. Papadakis, M. Dovčiak +1

Recently, nearby active galactic nuclei (AGN) have been subject to long X-rays/UV/optical monitoring campaigns. These campaigns reveal a strong correlation between the various UV a…

astro-ph.HE2024★ 60 cited

Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

F. Aharonian, F. Ait Benkhali, J. Aschersleben +161

SS 433 is a microquasar, a stellar binary system with collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.), finding a…

astro-ph.HE2024

A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data

Iuliana C. Niţu, Michael J. Keith, Caterina Tiburzi +26

Propagation effects are one of the main sources of noise in high-precision pulsar timing. For pulsars below an ecliptic latitude of , the ionised plasma in the solar wind…