supernova remnants
... dwarf) star – II- Explosion of a massive M>8M star Chandra 1999 Chandra 2000 • We will distinguish between – SN explosions (the actual events and the next few years) and – Remnants - what happens over the next few thousand years. SN 1987A observed in 1999, 2000 SNRs enrich the ISM by dispersing mat ...
... dwarf) star – II- Explosion of a massive M>8M star Chandra 1999 Chandra 2000 • We will distinguish between – SN explosions (the actual events and the next few years) and – Remnants - what happens over the next few thousand years. SN 1987A observed in 1999, 2000 SNRs enrich the ISM by dispersing mat ...
The Transfer Equation
... Class Problems • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You wa ...
... Class Problems • You want to detect the faint star of an unresolved binary system comprising a B5V star and an M0V companion. What wavelength regime would you choose to try to detect the M0V star? What is the ratio of the flux from the B star to the flux from the M star at that wavelength? • You wa ...
Stellar Evolution II
... before collapsing to form stars – very massive stars are rare • Stars with masses above 50 MSUN are unstable – nuclear reactions in their core produce energy at such a fast rate that they blow off their outer layers, losing mass. ...
... before collapsing to form stars – very massive stars are rare • Stars with masses above 50 MSUN are unstable – nuclear reactions in their core produce energy at such a fast rate that they blow off their outer layers, losing mass. ...
Stars off the Main Sequence - ScienceEducationatNewPaltz
... Outer shell of H around core ignites, prolonging life of star ...
... Outer shell of H around core ignites, prolonging life of star ...
Lec10
... Falling into a black hole • Signals sent from the freely falling observer would be time dilated and redshifted. • Once inside the event horizon, no communication with the universe outside the event horizon is possible. • But incoming signals from external world can enter. • Time travel and other fa ...
... Falling into a black hole • Signals sent from the freely falling observer would be time dilated and redshifted. • Once inside the event horizon, no communication with the universe outside the event horizon is possible. • But incoming signals from external world can enter. • Time travel and other fa ...
WG2 Overview Protons and Ions Accelerators (G
... Major initiatives are well underway for ion accelerators for nuclear astrophysics, such as FRIB, RAON and others. With the success of SNS, high intensity proton accelerator projects are progressing, such as ESS, PIP-II, Indian SNS, along with ADS ambitions, such as CADS and IADS. The aim of WG2 is t ...
... Major initiatives are well underway for ion accelerators for nuclear astrophysics, such as FRIB, RAON and others. With the success of SNS, high intensity proton accelerator projects are progressing, such as ESS, PIP-II, Indian SNS, along with ADS ambitions, such as CADS and IADS. The aim of WG2 is t ...
white dwarfs, neutron stars, black hole
... and very dramatic, in store for stars which are some 5 or more times as massive as our Sun. After the outer layers of the star have swollen into a red supergiant (i.e., a very big red giant), the core begins to yield to gravity and starts to shrink. As it shrinks, it grows hotter and denser, and a n ...
... and very dramatic, in store for stars which are some 5 or more times as massive as our Sun. After the outer layers of the star have swollen into a red supergiant (i.e., a very big red giant), the core begins to yield to gravity and starts to shrink. As it shrinks, it grows hotter and denser, and a n ...
Supernova Stalking - Susanna Kumlien Reportage
... survey Palomar Transient Factory – has successfully been scanning the sky through observations by its telescopes in California. “The best part of it is that we are spread all over the globe, so someone is always looking through the data. And that our automated processes allow for an unprecedentedly ...
... survey Palomar Transient Factory – has successfully been scanning the sky through observations by its telescopes in California. “The best part of it is that we are spread all over the globe, so someone is always looking through the data. And that our automated processes allow for an unprecedentedly ...
Wednesday, April 23 - Otterbein University
... thrown into space by supernovae – Condense into new stars and planets – Elements heavier than iron form during supernovae explosions ...
... thrown into space by supernovae – Condense into new stars and planets – Elements heavier than iron form during supernovae explosions ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... • At the center of the crab nebula, astronomers have identified a peculiar, compact star (a “pulsar”) that … – At visible wavelengths is difficult to see; – At radio wavelengths is a powerful “light-house” beacon that flashes on and off 33 times every second! ...
... • At the center of the crab nebula, astronomers have identified a peculiar, compact star (a “pulsar”) that … – At visible wavelengths is difficult to see; – At radio wavelengths is a powerful “light-house” beacon that flashes on and off 33 times every second! ...
Friday, April 26
... • Expect one in our galaxy about every hundred years • Six in the last thousand years; none since 1604 ...
... • Expect one in our galaxy about every hundred years • Six in the last thousand years; none since 1604 ...
When were some of the first elements discovered? Ten elements
... When neutrons and protons are combined to form an element, energy is released and some mass is “transformed” into energy according to E = mc2 where c is the speed of light and m is the mass transformed. Since different amounts of energy are released depending on the element or isotope formed relativ ...
... When neutrons and protons are combined to form an element, energy is released and some mass is “transformed” into energy according to E = mc2 where c is the speed of light and m is the mass transformed. Since different amounts of energy are released depending on the element or isotope formed relativ ...
The “Tuning Fork” Diagram Galaxy Properties 1 “Early”
... • Applied to nuclei of spirals Î presence of massive black holes • Also often applied to ...
... • Applied to nuclei of spirals Î presence of massive black holes • Also often applied to ...
How Stars Work: Ay 122 - Fall 2004 - Lecture 7
... laws / equations needed to describe structure: • Conservation of mass • Conservation of energy (at each radius, the change in the energy flux equals the local rate of energy release) • Equation of hydrostatic equilibrium (at each radius, ...
... laws / equations needed to describe structure: • Conservation of mass • Conservation of energy (at each radius, the change in the energy flux equals the local rate of energy release) • Equation of hydrostatic equilibrium (at each radius, ...
File
... electron. (2) Because of the law of conservation of momentum, the resulting products of the decay must have a total momentum of zero, which the observed proton and electron clearly do not. (Furthermore, if there are only two decay products, they must come out back-to-back.) (3) Therefore, we need to ...
... electron. (2) Because of the law of conservation of momentum, the resulting products of the decay must have a total momentum of zero, which the observed proton and electron clearly do not. (Furthermore, if there are only two decay products, they must come out back-to-back.) (3) Therefore, we need to ...
ASTR3007/4007/6007, Class 6: Nuclear Reactions 10 March In this
... reaction just involves taking a fixed number of nucleons and moving them to the left or right on this plot. The energy released or absorbed in the process is just the number of nucleons involved multiplied by the change in binding energy per nucleon. The first thing to notice about this plot is tha ...
... reaction just involves taking a fixed number of nucleons and moving them to the left or right on this plot. The energy released or absorbed in the process is just the number of nucleons involved multiplied by the change in binding energy per nucleon. The first thing to notice about this plot is tha ...
Exam 4 Study Guide
... comprehensive. This guide includes topics which might not be on this exam (but which might be on the final). It is also possible that something not specifically mentioned on the guide may be on the exam. However, remember everything on the exam is in the slides in some form. You may NOT use this ...
... comprehensive. This guide includes topics which might not be on this exam (but which might be on the final). It is also possible that something not specifically mentioned on the guide may be on the exam. However, remember everything on the exam is in the slides in some form. You may NOT use this ...
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.