1,079 research outputs found
Constraining the Equation of State of Neutron Stars through GRB X-Ray Plateaus
The unknown equation of state (EoS) of neutron stars (NSs) is puzzling
because of rich non-perturbative effects of strong interaction there. A method
to constrain the EoS by using the detected X-ray plateaus of gamma-ray bursts
(GRBs) is proposed in this paper. Observations show some GRB X-ray plateaus may
be powered by strongly magnetized millisecond NSs. The properties of these NSs
should then satisfy: (i) the spin-down luminosity of these NSs should be
brighter than the observed luminosity of the X-ray plateaus; (ii) the total
rotational energy of these NSs should be larger than the total energy of the
X-ray plateaus. Through the case study of GRB 170714A, the moment of inertia of
NSs is constrained as , where is the critical
rotational period that an NS can achieve. The constraint of the radii of NSs
according to GRB 080607 is shown in Table 1.Comment: 6 pages, 2 figute, The Astrophysical Journal, 886:87, 2019 December
1, https://doi.org/10.3847/1538-4357/ab490
Infrared imaging - case studies and applications
Recent advancements in the manufacture of solid state detectors have led to significant improvements in the use and applications of infrared (IR) imaging. Compared with traditional imaging in visible light, infrared imaging has abilities to convey significant additional information. Applications in medicine require wavelengths in the range of 0.8 to 25 microns while metrology and astronomy, traditionally, require wavelengths in the range of 25 microns to 1 mm.
In this study, infrared imaging has been used as a tool to characterize a variety of objects and systems. Some of these case studies have been considered under conditions of thermodynamic non-equilibrium. The results obtained are analyzed by considering the radiative properties of various materials
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