Astrofisika

"Tidak peduli bagaimana Alam Semesta ini berakhir, namun kemanakah kita akan pergi setelah tiada di alam ini?"

 ~Arip~

Frontiers and Controversies in Astrophysics 

 

 

Lecture 19 - Omega and the End of the Universe

 

 

 

Overview:

 

Class begins with a review of the issues previously addressed about the origin and fate of the universe. The role of gravity in the expansion of the universe is discussed and given as the reason why the rate of expansion cannot remain constant and will eventually slow down. The actual density of the universe is calculated using various methods. Finally, the unsolved problem of dark matter is addressed and two explanatory hypotheses are proposed. One is that the universe is comprised of WIMPs (Weakly Interactive Massive Particles) that fulfill two requirements: they have mass and do not interact with light. The second hypothesis is that dark matter is made of MACHOs (Massive Astrophysical Compact Halo Objects), which scientists have attempted to identify through gravitational lenses.

Problem sets/Reading assignment:

 

None assigned

Course Media

Transcript

html

Audio

mp3

Low Bandwidth Video

mov [100MB]

High Bandwidth Video

mov [500MB]

Resources:

Class Notes - Lecture 19 [PDF]


Sumber:

1. The University of Yale Open Course Ware

2. Professor Bailyn Websites

http://www.astro.yale.edu/bailyn/
http://www.astro.yale.edu/


Ucapan Terima Kasih:

1. Bapak. Prof. Dr. Ing. H. B. J. Habibie.

2. Departemen Pendidikan Nasional

3. Kementrian Riset dan Teknologi

4. Lembaga Penerbangan dan Antariksa Nasional


Disusun Ulang Oleh:

Arip Nurahman

Department of Physics, Indonesia University of Education

&

Follower Open Course Ware at MIT-Harvard University, Cambridge.USA.

Semoga Bermanfaat dan Terima Kasih