PPT
... Here Em and Bm are the amplitudes of the fields and, w and k are the angular frequency and angular wave number of the wave, respectively. ...
... Here Em and Bm are the amplitudes of the fields and, w and k are the angular frequency and angular wave number of the wave, respectively. ...
#1 - Electromagnetic Spectrum Intro
... g. Ultraviolet, visible, and a limited portion of the infrared spectrum (sometimes called shortwave radiation) drive our earth system. What happens to them when they reach Earth? (Remember ...
... g. Ultraviolet, visible, and a limited portion of the infrared spectrum (sometimes called shortwave radiation) drive our earth system. What happens to them when they reach Earth? (Remember ...
Incredible Shrinking Stars
... smaller than the stellar core. The stellar core was rotating (because it was part of a rotating star). When the core collapses, the rotation is concentrated (sort of) in the neutron. Consequently, tbe neutron star ends up spinning very rapidly 4. The interior of a neutron star consists of neutrons. ...
... smaller than the stellar core. The stellar core was rotating (because it was part of a rotating star). When the core collapses, the rotation is concentrated (sort of) in the neutron. Consequently, tbe neutron star ends up spinning very rapidly 4. The interior of a neutron star consists of neutrons. ...
docx
... basics of how electromagnetic radiation transfers energy from one location to another. You may have even practiced generating your own waves by oscillating a current in a wire producing a constantly changing electric and magnetic field, and thus an EM wave. Astronomers have long been using their lab ...
... basics of how electromagnetic radiation transfers energy from one location to another. You may have even practiced generating your own waves by oscillating a current in a wire producing a constantly changing electric and magnetic field, and thus an EM wave. Astronomers have long been using their lab ...
The Life and Death of Stars
... At least 3 x the mass of our Sun Gravity wins – it collapses to a point Singularity This is known as a Black Hole The escape velocity is greater than the speed of light Nothing can escape the Event Horizon, including light ...
... At least 3 x the mass of our Sun Gravity wins – it collapses to a point Singularity This is known as a Black Hole The escape velocity is greater than the speed of light Nothing can escape the Event Horizon, including light ...
Introduction to Accretion Phenomena in Astrophysics
... • Algol's magnitude is usually near-constant at 2.1, but regularly dips to 3.4 during the several hour long interval which happens every 2 days, 20 hours and 49 minutes. • John Goodricke (1764-1786). He was awarded Copley Medal for the solution of the Algol mystery, 1783! ...
... • Algol's magnitude is usually near-constant at 2.1, but regularly dips to 3.4 during the several hour long interval which happens every 2 days, 20 hours and 49 minutes. • John Goodricke (1764-1786). He was awarded Copley Medal for the solution of the Algol mystery, 1783! ...
Gravity simplest fusion
... • When a neutron star forms, the pull of gravity is so great that it overrides the electron degeneracy pressure of the atoms of the star. • The electrons are forced into their respective nuclei, where they combine with protons to form neutrons. This greatly decreases the size of each atom, and allow ...
... • When a neutron star forms, the pull of gravity is so great that it overrides the electron degeneracy pressure of the atoms of the star. • The electrons are forced into their respective nuclei, where they combine with protons to form neutrons. This greatly decreases the size of each atom, and allow ...
The electromagnetic Spectrum
... The permittivity (ε) of a medium is a measure of its ability to hold an electric field. ε0 = the permeability of empty space ε 0 = (4 π X 8,988 X 10-7) -1 wave velocity = (ε0 Xμ 0 )-1/2 = 2,288 X 108 m.s-1 This is very close to the measured value of 3,13 X 108 m.s-1 ...
... The permittivity (ε) of a medium is a measure of its ability to hold an electric field. ε0 = the permeability of empty space ε 0 = (4 π X 8,988 X 10-7) -1 wave velocity = (ε0 Xμ 0 )-1/2 = 2,288 X 108 m.s-1 This is very close to the measured value of 3,13 X 108 m.s-1 ...
Quantum Mechanics of Black Holes
... or neutron degeneracy pressure (which would otherwise result in a white dwarf, or neutron star, respectively). Within the framework of classical general relativity (GR), the core collapses to a singularity that is cloaked in an event horizon before it can be viewed. Like a giant elementary particle, ...
... or neutron degeneracy pressure (which would otherwise result in a white dwarf, or neutron star, respectively). Within the framework of classical general relativity (GR), the core collapses to a singularity that is cloaked in an event horizon before it can be viewed. Like a giant elementary particle, ...
ANALYTICAL EFFECTS OF GRAVITATIONAL WAVES ON THE
... relativistic effects on the motion of a satellite moving arround an oblate body. Soffel et al. used Gauss' form of the planetary equations, and determined the secular, the short-periodic and the long-periodic relativistic perturbations using the Keplerian elements to the first order in h- Heimberger ...
... relativistic effects on the motion of a satellite moving arround an oblate body. Soffel et al. used Gauss' form of the planetary equations, and determined the secular, the short-periodic and the long-periodic relativistic perturbations using the Keplerian elements to the first order in h- Heimberger ...
Waves Guided Notes Packet 2
... A great example of wave reflection and the interesting patterns that result from it are waves on a string/slinky. Because the string has a short length, the wave quickly runs into a barrier and reflects backward. ...
... A great example of wave reflection and the interesting patterns that result from it are waves on a string/slinky. Because the string has a short length, the wave quickly runs into a barrier and reflects backward. ...
OVERVIEW ABSTRACT HST/COS chemical abundance analysis of
... progenitor mass of 28 Msolar and SNe exploding energy of 0.3 B (1B=1044 J). ✦ Detecting new Zn and Fe lines in UV spectrum of HE1327-2326 result in a larger Pop III progenitor mass (higher by 6.5 Msolar) than previous result [5]. ...
... progenitor mass of 28 Msolar and SNe exploding energy of 0.3 B (1B=1044 J). ✦ Detecting new Zn and Fe lines in UV spectrum of HE1327-2326 result in a larger Pop III progenitor mass (higher by 6.5 Msolar) than previous result [5]. ...
Neutron star - SharpSchool
... Studying the Lives of Stars Stars don’t last forever Each star is born, goes through its life cycle, and eventually die ...
... Studying the Lives of Stars Stars don’t last forever Each star is born, goes through its life cycle, and eventually die ...
Stan Woosley (UCSC)
... Total rotational kinetic energy for a neutron star E rot ~ 2 1052 (1 ms/P)2 (R/10 km)2 erg j R 2 ~ 6.31015 (1ms/P) (R/10 km)2 cm2 s-1 at M 1.4 M For the last stable orbit around a black hole in the collapsar model (i.e., the minimum j to make a disk) ...
... Total rotational kinetic energy for a neutron star E rot ~ 2 1052 (1 ms/P)2 (R/10 km)2 erg j R 2 ~ 6.31015 (1ms/P) (R/10 km)2 cm2 s-1 at M 1.4 M For the last stable orbit around a black hole in the collapsar model (i.e., the minimum j to make a disk) ...
Lec11_ch13_blackholes
... • The centers of galaxies appear to contain supermassive black holes--millions of solar masses in size! ...
... • The centers of galaxies appear to contain supermassive black holes--millions of solar masses in size! ...
dm - The Institute of Mathematical Sciences
... around the massive object and reach us. This is known as gravitational lensing. If dark matter exerts gravity as shown by the rotational curves, they should also cause gravitational lensing. This is hard to observe in our own galaxy but easier to observe in other astronomical objects through powerf ...
... around the massive object and reach us. This is known as gravitational lensing. If dark matter exerts gravity as shown by the rotational curves, they should also cause gravitational lensing. This is hard to observe in our own galaxy but easier to observe in other astronomical objects through powerf ...
Chapter 15. The Chandrasekhar Limit, Iron-56 and Core
... speed of light. The light from the supernova, although a mere 1% or so of its total energy, nonetheless may be enough to outshine its entire galaxy for a period of days or weeks. This is a core-collapse supernova. It represents the final evolutionary phase of a high mass star. ...
... speed of light. The light from the supernova, although a mere 1% or so of its total energy, nonetheless may be enough to outshine its entire galaxy for a period of days or weeks. This is a core-collapse supernova. It represents the final evolutionary phase of a high mass star. ...
Details of the measurement technique
... One important application of this tool is that we can measure the mass of the black hole in the center of each galaxy, with a precision that far exceeds what other methods can do in external galaxies. We measure masses so precisely because our measurements are based on the motion of gas very close ...
... One important application of this tool is that we can measure the mass of the black hole in the center of each galaxy, with a precision that far exceeds what other methods can do in external galaxies. We measure masses so precisely because our measurements are based on the motion of gas very close ...
Question paper - Unit 5 (6PH05) - January 2012
... 5 About 25% of the mass of our Universe is thought to consist of dark matter. A key property of dark matter is that it A absorbs all electromagnetic-radiation. B cannot be detected. C emits no detectable electromagnetic-radiation. D exerts no gravitational force. (Total for Question 5 = 1 mark) 6 Co ...
... 5 About 25% of the mass of our Universe is thought to consist of dark matter. A key property of dark matter is that it A absorbs all electromagnetic-radiation. B cannot be detected. C emits no detectable electromagnetic-radiation. D exerts no gravitational force. (Total for Question 5 = 1 mark) 6 Co ...