Results 1 to 10 of about 6,149,165 (381)
Orbital Period Refinement of CoRoT Planets with TESS Observations [PDF]
Frontiers in Astronomy and Space Sciences, 2021 CoRoT was the first space mission dedicated to exoplanet detection. Operational between 2007 and 2012, this mission discovered 37 transiting planets, including CoRoT-7b, the first terrestrial exoplanet with a measured size. The precision of the published
Peter Klagyivik +8 more
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4FGL J1318.2+6754: A Long Orbital-period Redback Candidate [PDF]
The Astrophysical Journal LettersBy combining the Fermi catalog and the single-lined spectroscopic binaries of Gaia Data Release 3 (DR3), we report a new candidate redback millisecond pulsar binary, which is recommended as a target for radio telescopes to detect pulsed signals.
Jie Lin +3 more
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The lower bound on the orbital period of Kerr–Newman black holes [PDF]
European Physical Journal C: Particles and FieldsBased on studies of orbital periods in Kerr black hole spacetimes, Hod conjectured the existence of a universal lower bound on the orbital period for compact objects.
Yan Peng
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The extreme orbital period in scalar hairy kerr black holes
Physics Letters B, 2019 In a very interesting paper, Hod has proven that the equatorial null circular geodesic provides the extreme orbital period to circle a kerr black hole, which is closely related to the Fermat's principle.
Yan Peng
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Orbital Rhabdomyosarcoma: Clinicodemographic Features and Outcomes from Turkey [PDF]
Indian Journal of OphthalmologyPurpose: To evaluate the clinical features, radiologic, and histopathologic characteristics of patients with orbital rhabdomyosarcoma (RMS). Methods: The records of 14 patients with histologically proven orbital rhabdomyosarcoma between November 2012 and
Burak Ulas +2 more
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Orbital Period Changes of Selected Two Semi-Deteached Binaries
Journal of Advanced Research in Natural and Applied Sciences, 2022 Since the data obtained from satellite data are very sensitive, the minima times of the target systems have obtained from Kepler (K2) and TESS observations.
Muhammed Faruk Yıldırım
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On Langmuir’s periodic orbit [PDF]
Archiv der Mathematik, 2022 Niels Bohr successfully predicted in 1913 the energy levels for the hydrogen atom by applying certain quantization rules to classically obtained periodic orbits. Many physicists tried to apply similar methods to other atoms. In his well-known 1921 paper, I.~Langmuir established numerically the existence of a periodic orbit in the helium atom considered
K. Cieliebak +2 more
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Modeling and Orbital Parameters of Kepler Heartbeat Stars
The Astrophysical Journal Supplement Series, 2023 Heartbeat stars (HBSs) are astrophysical laboratories for studying binaries with eccentric orbits. A catalog of 173 Kepler HBSs was reported by Kirk et al., and we have modeled 153 of them by using a corrected version of Kumar et al.'s model based on the
Min-Yu Li +6 more
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The Astrophysical Journal, 2023 The 4U 1820-30 is an ultra-compact low-mass X-ray binary (LMXB) near the center of the globular cluster NGC 6624. Its negative orbital period derivative, observed from the phase evolution of its sinusoidal-like orbital variation, contradicts the positive
Yi Chou, Yao-Wun Jhang
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The Astrophysical Journal, 2023 Studying a centi-parsec supermassive black hole binary (SMBHB) would allow us to explore a new parameter space in active galactic nuclei, and these objects are also potential sources of gravitational waves.
Wu Jiang +8 more
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