Uniform radial motion of sound in a relativistic fluid ball

1996 ◽  
Vol 240 (2) ◽  
pp. 187-193 ◽  
Author(s):  
Neeraj Pant
Keyword(s):  
Radial Motion ◽  
Relativistic Fluid ◽  
Fluid Ball

scholarly journals Astrometric Radial Velocities From Hipparcos

1998 ◽  
Vol 11 (1) ◽  
pp. 564-564
Author(s):  
D. Dravins ◽  
L. Lindegren ◽  
S. Madsen ◽  
J. Holmberg
Keyword(s):  
Radial Velocity ◽  
High Precision ◽  
Radial Velocities ◽  
Radial Motion ◽  
Spectral Lines ◽  
Parallel Program ◽  
Stellar Surface ◽  
Space Astrometry ◽  
Stellar Motion ◽  
Surface Convection

Abstract Space astrometry now permits accurate determinations of stellar radial motion, without using spectroscopy. Although the feasibility of deducing astrometric radial velocities from geometric projection effects was realized already by Schlesinger (1917), only with Hipparcos has it become practical. Such a program has now been carried out for the moving clusters of Ursa Major, Hyades, and Coma Berenices. Realized inaccuracies reach about 300 m/s (Dravins et al. 1997). Discrepancies between astrometric and spectroscopic radial velocities reveal effects (other than stellar motion) that affect wavelength positions of spectral lines. Such are caused by stellar surface convection, and by gravitational redshifts. A parallel program (Gullberg & Dravins 1997) is analyzing high-precision spectroscopic radial velocities for different spectral lines in these stars, using the ELODIE radial-velocity instrument atHaute-Provence.

scholarly journals GEODESIC STRUCTURE OF THE SCHWARZSCHILD BLACK HOLE IN RAINBOW GRAVITY

2009 ◽  
Vol 24 (18) ◽  
pp. 1443-1451 ◽  
Author(s):  
CARLOS LEIVA ◽  
JOEL SAAVEDRA ◽  
JOSÉ VILLANUEVA
Keyword(s):  
Black Hole ◽  
Test Particle ◽  
Radial Motion ◽  
Schwarzschild Black Hole ◽  
Geodesic Structure

In this paper we study the geodesic structure of the Schwarzschild black hole in rainbow gravity analyzing the behavior of null and time-like geodesic. We find that the structure of the geodesics essentially does not change when the semiclassical effects are included. However, we can distinguish different scenarios if we take into account the effects of rainbow gravity. Depending on the type of rainbow functions under consideration, inertial and external observers see very different situations in radial and non-radial motion of a test particle.

Radial Motion of a Spinning Test Body in the Field of a Black Hole

1972 ◽  
Vol 6 (10) ◽  
pp. 3035-3036 ◽  
Author(s):  
R. F. O'Connell
Keyword(s):  
Black Hole ◽  
Test Body ◽  
Radial Motion

scholarly journals Radial Motion of Myosin Heads in Isolated Intact Rat Myocardium in Diastole

2011 ◽  
Vol 100 (3) ◽  
pp. 584a
Author(s):  
Gerrie P. Farman ◽  
HsiaoMan Hsu ◽  
David Gore ◽  
Edward J. Allen ◽  
Kelly Q. Schoenfelt ◽  
...  
Keyword(s):  
Radial Motion ◽  
Rat Myocardium
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