Zobrazeno 1 - 10
of 295
pro vyhledávání: '"Yong-Feng Huang"'
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 11 (2024)
According to the hypothesis that strange quark matter may be the true ground state of matter at extremely high densities, strange quark stars should be stable and could exist in the Universe. It is possible that pulsars may actually be strange stars,
Externí odkaz:
https://doaj.org/article/34dab878596149dda7635c2d182980f6
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 2, Pp 1-10 (2024)
Abstract FRB 180916 is an important repeating fast radio burst (FRB) source. Interestingly, the activity of FRB 180916 shows a well-regulated behavior, with a period of 16.35 days. The bursts are found to occur in a duty cycle of about 5 days in each
Externí odkaz:
https://doaj.org/article/ff52de949ad449bb957f9592864048a7
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
Seven possible ultra-low-mass and small-radius white dwarfs have been recently identified, with masses ranging from ∼0.02 M⊙ to ∼0.08 M⊙ and radii ranging from ∼ 4,270 km to 10670 km. The mass–radius measurements of these white dwarfs pos
Externí odkaz:
https://doaj.org/article/e9cc27e4a3f445b4af53735026233d7c
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 100 (2024)
About 25%–50% of white dwarfs (WDs) are found to be polluted by heavy elements. It has been argued that the pollution could be caused by the tidal disruption of an approaching planet around the WD, during which a large number of clumps would be pro
Externí odkaz:
https://doaj.org/article/7536d713a56f4678adf849fed398dfdc
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 81 (2024)
Particle-in-cell simulations have unveiled that shock-accelerated electrons do not follow a pure power-law distribution, but have an additional low-energy “thermal” part, which owns a considerable portion of the total energy of the electrons. Inv
Externí odkaz:
https://doaj.org/article/063000c2930c4fc996b15fe54fe01a8c
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 35 (2024)
Iron line spectroscopy has been one of the leading methods not only for measuring the spins of accreting black holes but also for testing fundamental physics. Basing on such a method, we present an analysis of a data set observed simultaneously by Nu
Externí odkaz:
https://doaj.org/article/90d2cad786384145ac4b6308c51f3c75
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 117 (2024)
Multiwavelength properties of the nearby supernova (SN)-associated low-luminosity GRB 171205A are investigated in depth to constrain its physical origin synthetically. The pulse width is found to be correlated with energy with a power-law index of
Externí odkaz:
https://doaj.org/article/46689419746e4b55bf7c60708d81298d
Publikováno v:
Physics Letters B, Vol 832, Iss , Pp 137204- (2022)
The ground state of matter may be strange quark matter (SQM), not hadronic matter. A whole sequence of SQM objects, ranging from strange quark stars and strange quark dwarfs to strange quark planets, can stably exist according to this SQM hypothesis.
Externí odkaz:
https://doaj.org/article/c44cbab7d6624745804208bf66bfdbae
Autor:
Chen-Ran Hu, Yong-Feng Huang
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 269, Iss 1, p 17 (2023)
Nearly 700 fast radio burst (FRB) sources have been detected so far, of which 29 are found to burst out repeatedly. Although a firm connection between at least some FRBs and magnetars has been established, the trigger mechanism and radiation process
Externí odkaz:
https://doaj.org/article/0f16c303c840461eb5f47da5ba5121bb
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 126 (2023)
The X-ray afterglow of many gamma-ray bursts (GRBs) exhibits a plateau phase before the normal power-law decay stage, which may be related to continued activities of the central engine. Tang et al. collected 174 such GRBs and confirmed the so-called
Externí odkaz:
https://doaj.org/article/6d05f1eeab794b55aa7fc06253b7c214