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Related papers: Galactic Centre Pulsars with the SKAO

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Pulsars in the Galactic centre promise to enable unparalleled tests of gravity theories and black hole physics and to serve as probes of the stellar formation history and evolution and the interstellar medium in the complex central region…

The discovery and timing of radio pulsars within the Galactic centre is a fundamental aspect of the SKA Science Case, responding to the topic of "Strong Field Tests of Gravity with Pulsars and Black Holes" (Kramer et al. 2004; Cordes et al.…

Instrumentation and Methods for Astrophysics · Physics 2015-01-05 R. P. Eatough , T. J. W. Lazio , J. Casanellas , S. Chatterjee , J. M. Cordes , P. B. Demorest , M. Kramer , K. J. Lee , K. Liu , S. M. Ransom , N. Wex

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 measurements of the spacetime around the supermassive black hole,…

High Energy Astrophysical Phenomena · Physics 2024-12-09 Zexin Hu , Lijing Shao

The high stellar density in the central parsecs around the Galactic Centre makes it a seemingly favourable environment for finding relativistic binary pulsars. These include pulsars orbiting other neutron stars, stellar-mass black holes or…

High Energy Astrophysical Phenomena · Physics 2021-08-25 R. P. Eatough , P. Torne , G. Desvignes , M. Kramer , R. Karuppusamy , B. Klein , L. G. Spitler , K. J. Lee , D. J. Champion , K. Liu , R. S. Wharton , L. Rezzolla , H. Falcke

The center of our Galaxy hosts a supermassive black hole, Sagittarius (Sgr) A*. Young, massive stars within 0.5 pc of SgrA* are evidence of an episode of intense star formation near the black hole a few Myr ago, which might have left behind…

Because of their extreme stellar densities, globular clusters are highly efficient factories of X-ray binaries and radio pulsars: per unit of stellar mass, they contain about 1000 times more of these exotic objects. Thus far, 345 radio…

The supermassive black hole at the Galactic center harbors a bound cluster of massive stars that should leave neutron-star remnants. Extrapolating from the available data, we estimate that 100-1000 radio pulsars may presently orbit Sgr A*…

Astrophysics · Physics 2009-11-10 Eric Pfahl , Avi Loeb

Radio pulsars in relativistic binary systems are unique tools to study the curved space-time around massive compact objects. The discovery of a pulsar closely orbiting the super-massive black hole at the centre of our Galaxy, Sgr A*, would…

Astrophysics of Galaxies · Physics 2015-06-11 R. P. Eatough , M. Kramer , B. Klein , R. Karuppusamy , D. J. Champion , P. C. C. Freire , N. Wex , K. Liu

In the past decade high resolution measurements in the infrared employing adaptive optics imaging on 10m telescopes have allowed determining the three dimensional orbits stars within ten light hours of the compact radio source at the center…

Astrophysics · Physics 2010-05-19 R. Genzel , V. Karas

Searching for radio pulsars orbiting around the Galactic centre black hole (BH), Sagittarius A$^\star$ (Sgr A$^\star$), represents a holy grail goal for large-area radio telescopes, in particular for the Square Kilometre Array. Follow-up…

High Energy Astrophysical Phenomena · Physics 2026-04-03 Lijing Shao , Zexin Hu

Pulsars, if existing and detectable in the immediate vicinity of the massive black hole (MBH) in the Galactic center (GC), may be used as a superb tool to probe both the environment and the metric of the central MBH. The recent discovery of…

Astrophysics of Galaxies · Physics 2015-06-18 Fupeng Zhang , Youjun Lu , Qingjuan Yu

With its extreme density of stars and stellar remnants, dense young massive clusters, high specific star formation rate, intense radiation field, high magnetic field strength, and properties of the interstellar medium that resemble those in…

The Galactic Center is the closest galactic nucleus that can be studied with unprecedented angular resolution and sensitivity. We summarize recent basic observational results on Sagittarius A* and the conditions for star formation in the…

We developed a numerical methodology to compute the fully-relativistic propagation time of photons emitted by a pulsar in orbit around a massive compact object, like the supermassive black hole Sagittarius A* in the Galactic Center, whose…

General Relativity and Quantum Cosmology · Physics 2023-07-20 Riccardo Della Monica , Ivan de Martino , Mariafelicia de Laurentis

Despite intensive searches, the only pulsar within 0.1 pc of the central black hole in our Galaxy, Sgr A*, is a radio-loud magnetar. Since magnetars are rare among the Galactic neutron star population, and a large number of massive stars…

High Energy Astrophysical Phenomena · Physics 2016-04-06 Dimitrios Giannios , Duncan R. Lorimer

The sheer number of pulsars discovered by the SKA, in combination with the exceptional timing precision it can provide, will revolutionize the field of pulsar astrophysics. The SKA will provide a complete census of pulsars in both the…

Astrophysics · Physics 2011-07-19 J. M. Cordes , M. Kramer , T. J. W. Lazio , B. W. Stappers , D. C. Backer , S. Johnston

BlackHoleCam is a project funded by a European Research Council Synergy Grant to build a complete astrophysical description of nearby supermassive black holes by using a combination of radio imaging, pulsar observations, stellar astrometry…

Pulsars orbiting the Galactic center black hole, Sgr A*, would be potential probes of its mass, distance and spin, and may even be used to test general relativity. Despite predictions of large populations of both ordinary and millisecond…

Astrophysics of Galaxies · Physics 2014-02-20 Jason Dexter , Ryan M. O'Leary

With 10 years of high-resolution imaging data now available on the stellar cluster in the Galactic Center, we analyze the dynamics of the stars at projected distances $\leq1.2''$ from the central black hole candidate Sagittarius A* (Sgr…

Astrophysics · Physics 2009-11-07 R. Schoedel , R. Genzel , T. Ott , A. Eckart

Pulsars in the Galactic Center (GC) are important probes of General Relativity, star formation, stellar dynamics, stellar evolution, and the interstellar medium. Despite years of searching, only a handful of pulsars in the central 0.5 deg…

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