S Black Holes By: Alex Saladna

Where do Black Holes come from? Collapse of stars- caused when protons that carry momentum outward begin to no longer be produced. As a result the star caves under its own gravity. 1Alex Saladna

White Dwarf Caused by the collapse of smaller stars and are essentially the burning remnants of the star’s core. The star will eventually cool and the result will be a black dwarf. 2Alex Saladna

Neutron stars Large stars can form neutron stars when they collapse. These are extremely dense stars that actually turn protons and electrons into neutrons due to the immense gravity. 3Alex Saladna

Caused when a star collapses and gravity is so great that a certain critical density is reached to the point where a black hole is formed. The black hole proceeds to eat its way out of the sun and releases gamma ray bursts from both ends.(This happens before the star even explodes) Black Holes 4Alex Saladna

Black Hole Structure Accretion disk- Super heated material swirling around the black hole Event horizon- “The point of no return” Quasi Periodic Oscillation- Used to determine size of a black hole and is caused by material moving along the inner edge of the accretion disk. 5Alex Saladna

Particle Jet Jets are cause when energetic gas accrete in a black hole but the black hole is unable to absorb the energy. As a result some of it is shot out in the form of energetic particles. 6Alex Saladna

Gravitational Lensing The Castle on the Mall Light is bent around the object to the point where we can see the back of the castle These rings of light that are formed are called Einstein Rings 7Alex Saladna

Schwarzschild Radius Radius of a sphere such that if the mass of an object were compressed to the size of this sphere it would take the speed of light to escape it. With blackholes the radius is actually smaller than the Schwarzschild Radius. Larger black holes have a larger density while smaller black holes have a high density and a small Schwarzschild radius 8Alex Saladna

Detecting black holes Black holes absorb light and pretty much everything that it encounters so how do we know they exist? The same way glass(which is invisible) distorts light so do black holes. We can detect black holes by observing such distortions in light 9Alex Saladna

Work Cited "Black Holes." The Kavli Institute for Particle Astrophysics and Cosmology. Stanford, n.d. Web. 30 Nov "Black Holes - NASA Science." Black Holes - NASA Science. N.p., n.d. Web. 17 Nov "Exploring Black Holes with Chandra X-ray Observatory." Exploring Black Holes. Harvard, n.d. Web. 18 Nov "Frequently Asked Questions About Black Holes." Frequently Asked Questions About Black Holes. Virginia Tech, n.d. Web. 18 Nov "HubbleSite: Black Holes: Gravity's Relentless Pull Interactive: Encyclopedia." HubbleSite: Black Holes: Gravity's Relentless Pull Interactive: Encyclopedia. N.p., n.d. Web. 18 Nov Zhankui, Lu, and Mo H. J. "CLASSICAL BULGES, SUPERMASSIVE BLACKHOLES AND AGN FEEDBACK: EXTENSION TO LOW-MASS GALAXIES." Arvix. N.p., 17 July Web. 18 Nov Alex Saladna10

Work Cited Images "Black Hole." Wikipedia. Wikimedia Foundation, 29 Nov Web. 29 Nov "Black Holes - Viewing Gallery." Black Holes - Viewing Gallery. N.p., n.d. Web. 29 Nov "Black Holes." The Kavli Institute for Particle Astrophysics and Cosmology. Stanford, n.d. Web. 30 Nov "CASTLES Survey." Gravitational Lens Data Base. N.p., n.d. Web. 29 Nov "Charged Black Holes: The Reissner-Nordström Geometry." Charged Black Holes: The Reissner- Nordström Geometry. N.p., n.d. Web. 29 Nov Dumé, Belle. "X-rays Light up Gamma-ray Burst." Physicsworld.com. N.p., 28 Jan Web. 29 Nov Dunbar, Brian. NASA. NASA, 02 Aug Web. 29 Nov Dunbar, Brian. NASA. NASA, n.d. Web. 29 Nov "Life Cycle of a Star: White Dwarf." Prezi.com. N.p., n.d. Web. 29 Nov "NICER Mission Set to Reveal the Secrets of Neutron Stars." SciTech Daily. N.p., n.d. Web. 29 Nov Alex Saladna

QUESTIONS? 12 Alex Saladna