Magneto-gravitational coupling and the missing mass problem in galactic dynamics / Babur M. Mirza.

Format:

Book

Author/Creator:

Mirza, Babur M., author.

Contributor:

Craig M. Merrihue Memorial Fund.

Language:

English

Subjects (All):

Astronomy--Mathematics.

Astronomy.

Galactic dynamics.

Physical Description:

ix, 105 pages : illustrations ; 21 cm

Place of Publication:

Newcastle upon Tyne : Cambridge Scholars Publishing, 2023.

Summary:

In this book, rotation dynamics of galaxies is described using coupled field equations for the gravitational and electromagnetic fields. Relativistic frame-dragging effect is one of the consequences predicted by the general theory of relativity for rotating masses. However, except for strong gravitational sources, the spacetime dragging is too weak to produce significant modifications around rotating astrophysical systems. Here it is shown that, in the case of gravitational and magnetic field coupling, the effects of magnetic field energy density are enhanced. An outward dragging caused by the coupled effect of the magnetic field and the background spacetime can produce significant increase in the rotational velocities of galaxies. This has important implications for the missing mass problem in galactic dynamics. Other consequences of the magneto-gravitational coupling, such as galactic size, age, and the luminosity-mass relation, consolidate the model of galactic dynamics. -- Publisher

Contents:

Introduction

Gravitational Field

Maxwell Equations

Galactic Dynamics

Notes:

Includes bibliographical references.

Local Notes:

Acquired for the Penn Libraries with assistance from the Craig M. Merrihue Memorial Fund.

ISBN:

1527551725

9781527551725

OCLC:

1406070505

Publisher Number:

99996358549