The new formula for gravitational radiation energy loss Applications to the axisymmetric two-body problem and the binary pulsar

1986 ◽  
Vol 304 ◽  
pp. 671 ◽  
Author(s):  
F. I. Cooperstock ◽  
P. H. Lim
Keyword(s):  
Energy Loss ◽  
Gravitational Radiation ◽  
Body Problem ◽  
Radiation Energy ◽  
Binary Pulsar ◽  
Two Body Problem ◽  
Radiation Energy Loss ◽  
New Formula

The new formula for gravitational-radiation energy loss and the axially symmetric two-body problem

1986 ◽  
Vol 64 (2) ◽  
pp. 134-139 ◽  
Author(s):  
F. I. Cooperstock ◽  
P. H. Lim
Keyword(s):  
Equation Of State ◽  
Energy Loss ◽  
Gravitational Radiation ◽  
Body Problem ◽  
Radiation Energy ◽  
Axially Symmetric ◽  
Two Body Problem ◽  
Radiation Energy Loss ◽  
Order Of Magnitude ◽  
New Formula

We present the new formula for gravitational-radiation energy loss that replaces the familiar quadrupole formula. The new formula helps to clarify why the quadrupole formula works when it does. The origin of the correction tensor is discussed and then applied to the axially symmetric two-body problem. With the conventional equation of state, ε = ε(P), the correction tensor vanishes and the radiation is that of the bulk-motion quadrupole formula. This is to be compared with our earlier result with an unconventional equation of state giving more radiation and with that of critics claiming dominant radiation via internal motions with the quadrupole formula. An order-of-magnitude calculation is performed for a binary system, where it is found that there is the potential for contributions from nonlinear terms to be as significant as those from the linear terms after(Gm/α)−5/6 orbits. This occurs after ~102 years for the binary pulsar PSR1913 + 16.

scholarly journals Gamma?Radiation Absorption Coefficients of Various Materials Allowing for Bremsstrahlung and Other Secondary Radiations

1961 ◽  
Vol 14 (4) ◽  
pp. 443 ◽  
Author(s):  
JW Allison
Keyword(s):  
Absorption Coefficient ◽  
Energy Loss ◽  
Basic Assumption ◽  
Radiation Energy ◽  
Radiation Absorption ◽  
Annihilation Radiation ◽  
Total Absorption ◽  
Absorption Coefficients ◽  
Radiation Energy Loss ◽  
Total Absorption Coefficient

Existing calculations of the total absorption coefficient are generally based on the assumption that all the primary radiation energy which is converted into Comptonscattered radiation escapes from the material without significant absorption. This paper extends this basic assumption to include fluorescent and annihilation radiation and bremsstrahlung, and new values of the photoelectric, Compton, pair production, and total absorption coefficients are determined in the energy range O� 01-100 MeV for hydrogen, nitrogen, oxygen, argon, aluminium, iron, lead, air, and water. For comparison purposes revised values of the total absorption coefficient, allowing for the Compton radiation energy loss only, are also determined for these materials, using the most recent data for the component coefficients.

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