powerpoint - Physics @ IUPUI
... • No matter what the size of star, with the exception of the Brown Dwarf, all fuse hydrogen into helium in the core (using either p-p chain or CNO cycle). • Eventually each of them will run out of fuel. • What happens next? Well, stay tuned. It all depends on the size of the star. ...
... • No matter what the size of star, with the exception of the Brown Dwarf, all fuse hydrogen into helium in the core (using either p-p chain or CNO cycle). • Eventually each of them will run out of fuel. • What happens next? Well, stay tuned. It all depends on the size of the star. ...
Massive stars as thermonuclear reactors and their explosions
... of matter with mass, e.g. protons and neutrons. Because of the high entropy as the universe expanded, there was time to manufacture elements only upto helium and the major products of cosmic nucleosynthesis remained the light elements hydrogen and helium2 . Stars formed from this primordial matter. ...
... of matter with mass, e.g. protons and neutrons. Because of the high entropy as the universe expanded, there was time to manufacture elements only upto helium and the major products of cosmic nucleosynthesis remained the light elements hydrogen and helium2 . Stars formed from this primordial matter. ...
Outline2a
... As the gas cloud collapses, the protostar gets smaller and smaller (and, due to the increased central pressure), hotter and hotter. Accretion will cause the mass of the protostar to increase more than 100 times. The star will move towards its place on the ...
... As the gas cloud collapses, the protostar gets smaller and smaller (and, due to the increased central pressure), hotter and hotter. Accretion will cause the mass of the protostar to increase more than 100 times. The star will move towards its place on the ...
PowerPoint Presentation - Center for Gravitational Wave Physics
... 1e-8--1e-7 Msun/year (depending on the accreting WD mass) ...
... 1e-8--1e-7 Msun/year (depending on the accreting WD mass) ...
Review: How does a star`s mass determine its life story?
... faster as they are squeezed into a very small space. • As a white dwarf’s mass approaches 1.4MSun, its electrons must move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun, the white dwarf limit (or Chandrasekhar limit). ...
... faster as they are squeezed into a very small space. • As a white dwarf’s mass approaches 1.4MSun, its electrons must move at nearly the speed of light. • Because nothing can move faster than light, a white dwarf cannot be more massive than 1.4MSun, the white dwarf limit (or Chandrasekhar limit). ...
Sample final exam
... a. Supermassive black hole at the center of the Milky Way b. Evidence for the Big Bang c. The universe is accelerating its expansion ...
... a. Supermassive black hole at the center of the Milky Way b. Evidence for the Big Bang c. The universe is accelerating its expansion ...
Homework #1 Solutions
... The proton has an initial acceleration of 3.4 ×1018 m/s2 toward the electron and the electron has an initial acceleration of 6.3 ×1021 m/s2 toward the proton. E VALUATE : The force the electron exerts on the proton is equal in magnitude to the force the proton exerts on the electron, but the acceler ...
... The proton has an initial acceleration of 3.4 ×1018 m/s2 toward the electron and the electron has an initial acceleration of 6.3 ×1021 m/s2 toward the proton. E VALUATE : The force the electron exerts on the proton is equal in magnitude to the force the proton exerts on the electron, but the acceler ...
Accretion Friction Braking in Stellar Metamorphosis
... The answer is that they do not. You do not build planets in outer space by slamming rocks together at any appreciable velocity, because they will bounce off each other like billiard balls or obliterate each other like artillery shells. Since planets are not formed by rocks slamming into each other a ...
... The answer is that they do not. You do not build planets in outer space by slamming rocks together at any appreciable velocity, because they will bounce off each other like billiard balls or obliterate each other like artillery shells. Since planets are not formed by rocks slamming into each other a ...
Review: How does a star`s mass determine its life story?
... horizon because nothing can go faster than light. No escape means there is no more contact with something that falls in. It increases the hole mass, changes the spin or charge, but otherwise ...
... horizon because nothing can go faster than light. No escape means there is no more contact with something that falls in. It increases the hole mass, changes the spin or charge, but otherwise ...
Document
... 1. Binary system: • A sub-Chandrasekhar white dwarf • A less dense companion star 2. Gravity strips material off companion star 3. Dwarf gets more and more massive 4. Mass exceeds Chandrasekhar limit (1.4 Msun) 5. Kablooey 6. Kablooey has a certain absolute magnitude 7. Kablooey is very very bright. ...
... 1. Binary system: • A sub-Chandrasekhar white dwarf • A less dense companion star 2. Gravity strips material off companion star 3. Dwarf gets more and more massive 4. Mass exceeds Chandrasekhar limit (1.4 Msun) 5. Kablooey 6. Kablooey has a certain absolute magnitude 7. Kablooey is very very bright. ...
Supernova Neutrinos
... The earth is just a silly ball To them, through which they simply pass, Like dustmaids down a drafty hall Or photons through a sheet of glass. They snub the most exquisite gas, ...
... The earth is just a silly ball To them, through which they simply pass, Like dustmaids down a drafty hall Or photons through a sheet of glass. They snub the most exquisite gas, ...
Asymptotic Giant Branch
... The solid and dashed lines are from theoretical models calculated for a 1.5 solar mass star with varying mass of the 13C pocket. The solid line corresponds to ⅔ of the standard mass (which is 4×10−6 solar masses). The upper and lower dashed curve represent the envelope of a set of calculations where ...
... The solid and dashed lines are from theoretical models calculated for a 1.5 solar mass star with varying mass of the 13C pocket. The solid line corresponds to ⅔ of the standard mass (which is 4×10−6 solar masses). The upper and lower dashed curve represent the envelope of a set of calculations where ...
document
... NUCLEOSYNTHESIS ENDED AT THIS POINT. A CLOUD OF NUCLEI, ELECTRONS, PROTONS, AND PHOTONS EXISTED AT THIS POINT - A ...
... NUCLEOSYNTHESIS ENDED AT THIS POINT. A CLOUD OF NUCLEI, ELECTRONS, PROTONS, AND PHOTONS EXISTED AT THIS POINT - A ...
Exam: ETEN15 Accelerators, Particles and Fields, March 14
... Determine the position (x(t), y(t), z(t)) of the proton for t > 0. b) At what time T does the proton come back to the origin when E0 = 0? c) Assume that E0 > 0 and that the speed of the proton is non-relativistic. Determine the position (x(t), y(t), z(t)) of the proton for t > 0. d) Assume that E0 > ...
... Determine the position (x(t), y(t), z(t)) of the proton for t > 0. b) At what time T does the proton come back to the origin when E0 = 0? c) Assume that E0 > 0 and that the speed of the proton is non-relativistic. Determine the position (x(t), y(t), z(t)) of the proton for t > 0. d) Assume that E0 > ...
Star Formation: Interstellar Gas and Dust
... This material ejected in 1843. • Major brightening recorded. • Ejected 3 M • 2nd brightest star in sky at that time. Brightness Î ...
... This material ejected in 1843. • Major brightening recorded. • Ejected 3 M • 2nd brightest star in sky at that time. Brightness Î ...
Atoms, Molecules and Ions
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. All atoms of a given element are identical, having the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. 2. Compounds are composed of ...
... Dalton’s Atomic Theory (1808) 1. Elements are composed of extremely small particles called atoms. All atoms of a given element are identical, having the same size, mass and chemical properties. The atoms of one element are different from the atoms of all other elements. 2. Compounds are composed of ...
Gone in a flash: supernovae in the survey era
... in the figures. The top panel shows an overview of the last 130 years, while the bottom panel focuses on the last 20 years and the future. ...
... in the figures. The top panel shows an overview of the last 130 years, while the bottom panel focuses on the last 20 years and the future. ...
Gravitational Waves from Neutron Stars
... after the bounce the star is composed of • low entropy, lepton rich core with trapped υs • high entropy, low density, accreting mantle • after Sn explosion, in a few tens of seconds extensive neutrino losses reduce lepton pressure and the mantle contracts: the radius of the PNS is now ~ 20-30 km To ...
... after the bounce the star is composed of • low entropy, lepton rich core with trapped υs • high entropy, low density, accreting mantle • after Sn explosion, in a few tens of seconds extensive neutrino losses reduce lepton pressure and the mantle contracts: the radius of the PNS is now ~ 20-30 km To ...
P-nuclei
p-Nuclei (p stands for proton-rich) are certain proton-rich, naturally occurring isotopes of some elements between selenium and mercury which cannot be produced in either s- or r-process.