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• W3100835006 abstract "Pulsars around the massive black hole (MBH) in the Galactic center (GC) are expected to be revealed by upcoming facilities (e.g., the Square Kilometer Array). Under a full relativistic framework with the pulsar approximated as a test particle, we investigate the constraints on the spinning of the MBH by monitoring the timing of surrounding pulsars. For GC pulsars orbiting closely around the MBH (e.g., ≲1000 au), we find that full relativistic treatment in modeling accurately their timing signals can be necessary, as the relativistic signals are orders of magnitude larger than the time-of-arrival measurement accuracies. Although usually there are near degeneracies among MBH spin parameters, the constraints on the spinning of the MBH are still very tight. By continuously monitoring a normal pulsar in orbits with a period of ∼2.6 yr and an eccentricity of 0.3–0.9 under a timing precision of 1–5 ms, within ∼8 yr the spin magnitude and the orientations of the GC MBH can be constrained with error of and , respectively. Even for pulsars in orbits similar to the detected star S2/S0-2 or S0-102, we find that the spinning of the MBH can still be constrained within 4–8 yr, with the most significant constraints provided near the pericenter passage. If the proper motion of the pulsars with astrometric accuracy of 10 μas can also be collected along with the timing measurement, then the position, velocity, mass, and distance to the solar system of the MBH can be constrained to ∼10 μas, ∼1 μas yr−1, , and ∼1 pc, respectively." @default.
• W3100835006 created "2020-11-23" @default.
• W3100835006 creator A5007522323 @default.
• W3100835006 creator A5024652814 @default.
• W3100835006 date "2017-10-27" @default.
• W3100835006 modified "2023-10-01" @default.
• W3100835006 title "Probing the Spinning of the Massive Black Hole in the Galactic Center via Pulsar Timing: A Full Relativistic Treatment" @default.
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• W3100835006 doi "https://doi.org/10.3847/1538-4357/aa8f47" @default.
• W3100835006 hasPublicationYear "2017" @default.
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