PENYIMPANGAN GRAVITASI NEWTON SEBAGAI KONSEKUENSI GEOMETRI DAN HUBUNGANNYA DENGAN MATERI GELAP

KOMALA, MUHAMMAD KHAIDIR and Bama, Akhmad Aminuddin and Poerwono, Pradanto (2019) PENYIMPANGAN GRAVITASI NEWTON SEBAGAI KONSEKUENSI GEOMETRI DAN HUBUNGANNYA DENGAN MATERI GELAP. Undergraduate thesis, Sriwijaya University.

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Abstract

The incompatibility of Newton's gravitational theory and Keppler's law to explaining the rotational velocity curves of stars in galaxies became the basis for the development of the hypothesis of dark matter by scientists in the 20th century. This hypothesis is more widely accepted to complement Newton's theory of gravity and Keppler's law, rather than trying to re-analyze the possible that Newton's theory of gravity and Keppler's law still need to improve. Not only that, Newton's theory of gravity also doesn’t obey Einstein's special relativity postulate, that light is the maximum speed. Based on this, we have modified Newton's equations of gravity, assuming Newton's theory of gravity also obeys Einstein's postulate of relativity, that gravity propagates in space at a finite speed, but the value is undefined. As a consequence of the perceived gravitational force on moving matter being delayed, the perceived gravitational force also changes, depending on the direction it moves, to the initial position of the source of the gravitational force. Therefore, the difference in gravitational force data can be retrieved based on the rotation curve as a change in gravitational force due to the delay of the gravitational force propagating in space. Beside that, the data also calculated the value of the velocity of gravity propagating in space by using the system of interaction of two stars with the same mass, and both orbit the center of mass with the distance of each star is the same but the positions of the two are opposite. From Newton's modified gravity equation, we got an equation that can explain the curve of increasing the rotational speed of the stars. This makes it quite clear, that following Einstein's relativity postulate, Newton's modified theory of gravity can explain the rotational velocity curves of stars in galaxies without having to cover the Newton's gravitational theory and Keppler's law with the dark matter hypothesis.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	gravity , dark matter
Subjects:	Q Science > QB Astronomy > QB349-421 Theoretical astronomy and celestial mechanics Q Science > QC Physics > QC1-999 Physics Q Science > QC Physics > QC120-168.85 Descriptive and experimental mechanics
Divisions:	08-Faculty of Mathematics and Natural Science > 45201-Physics (S1)
Depositing User:	Users 3196 not found.
Date Deposited:	20 Nov 2019 08:55
Last Modified:	20 Nov 2019 08:55
URI:	http://repository.unsri.ac.id/id/eprint/17351

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