Estimating Microscopic Nuclear Data by Compact Star Observations
نویسندگان
چکیده
We studied recent observation data of pulsar masses and radii PSR J0740+6620, J0348+0432, J1614–2230 from different measurements, based on the extended version σ-ω model. Throughout our analysis, we assumed that these pulsars are maximal-mass compact stars, thus applied core approximation. Based linear relation between microscopic macroscopic parameters stars evaluated by model, estimated average Landau mass m L = 752.46 - 42.5 + 49.1 MeV compressibility K 261.7 28.0 57.2 MeV.
منابع مشابه
Panchromatic Observations of SN2011dh Point to a Compact Progenitor Star
We report the discovery and detailed monitoring of X-ray emission associated with the Type IIb SN2011dh using data from the Swift and Chandra satellites, placing it among the best studied X-ray supernovae to date. We further present millimeter and radio data obtained with the SMA, CARMA, and EVLA during Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA Nationa...
متن کاملModern compact star observations and the quark matter EoS
A hybrid equation of state (EoS) for dense matter is presented that satisfies phenomenological constraints from modern compact star (CS) observations which indicate high maximum masses (M ∼ 2M⊙) and large radii (R > 12 km). The corresponding isospin symmetric EoS is consistent with flow data analyses of heavy-ion collisions. The transition from nuclear to two-flavor color superconducting quark ...
متن کاملmodeling loss data by phase-type distribution
بیمه گران همیشه بابت خسارات بیمه نامه های تحت پوشش خود نگران بوده و روش هایی را جستجو می کنند که بتوانند داده های خسارات گذشته را با هدف اتخاذ یک تصمیم بهینه مدل بندی نمایند. در این پژوهش توزیع های فیزتایپ در مدل بندی داده های خسارات معرفی شده که شامل استنباط آماری مربوطه و استفاده از الگوریتم em در برآورد پارامترهای توزیع است. در پایان امکان استفاده از این توزیع در مدل بندی داده های گروه بندی ...
Equation of state at high densities and modern compact star observations
Recently, observations of compact stars have provided new data of high accuracy which put strong constraints on the high-density behaviour of the equation of state of strongly interacting matter otherwise not accessible in terrestrial laboratories. The evidence for neutron stars with high mass (M = 2.1±0.2M⊙ for PSR J0751+1807) and large radii (R > 12 km for RX J1856-3754) rules out soft equati...
متن کاملAustralia Telescope Compact Array Observations of the Oh Star Roberts 22: Resolved Images of Oh Emission
We have imaged the unusual OH/IR object G 284-0. Australia. The angular resolution of the OH images we present here is 6 ′′ (12000 AU at a distance of 2 kpc). We find OH emission, of extent 1. ′′ 5 (2800 AU), located inside the optical bipolar flow region (size 8 ′′) discovered by Allen et al. (1980) and imaged recently by Sahai et al. (1999) with the Hubble Space Telescope. We present astromet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Epj Web of Conferences
سال: 2022
ISSN: ['2101-6275', '2100-014X']
DOI: https://doi.org/10.1051/epjconf/202225913011