Gone in a flash: supernovae in the survey era
... have been observed, recorded and studied by humans for nearly 2000 years, since the first descriptions of “guest stars” appeared in the records of Chinese astronomers. These relatively nearby galactic supernovae, appearing brighter in the sky than Venus – perhaps bright enough to cast shadows – must ...
... have been observed, recorded and studied by humans for nearly 2000 years, since the first descriptions of “guest stars” appeared in the records of Chinese astronomers. These relatively nearby galactic supernovae, appearing brighter in the sky than Venus – perhaps bright enough to cast shadows – must ...
Old Sample Exam #2
... _____ 3) How long can a star run on gravity without nuclear fusion? (in years) a) 1031 b) 1012 c) 1010 d) 107 e) 100 _____ 4) What element cannot be nuclear burned to release energy? a) oxygen b) iron c) hydrogen d) uranium e) helium _____ 5) Planetary nebulae are often shaped like a(n) a) hourglass ...
... _____ 3) How long can a star run on gravity without nuclear fusion? (in years) a) 1031 b) 1012 c) 1010 d) 107 e) 100 _____ 4) What element cannot be nuclear burned to release energy? a) oxygen b) iron c) hydrogen d) uranium e) helium _____ 5) Planetary nebulae are often shaped like a(n) a) hourglass ...
Time From the Perspective of a Particle Physicist
... • new nuclei form photons, n, and p strike shell around core see in SN debris • p + e n + neutrino (and nuclei decaying) 1. Burst of neutrinos. 1000 times more energy than from light (photons) ...
... • new nuclei form photons, n, and p strike shell around core see in SN debris • p + e n + neutrino (and nuclei decaying) 1. Burst of neutrinos. 1000 times more energy than from light (photons) ...
ASTRONOMY 12 Problem Set 4 – Due March 10, 2016 1) After
... upper right, lower left, or lower right?). Incidentally, this makes Type IIp supernovae useful standard candles. We don’t know their radius directly but can calculate it from the age of the supernova and its expansion rate (as determined by spectral line widths) and then calculate their luminosity, ...
... upper right, lower left, or lower right?). Incidentally, this makes Type IIp supernovae useful standard candles. We don’t know their radius directly but can calculate it from the age of the supernova and its expansion rate (as determined by spectral line widths) and then calculate their luminosity, ...
Type Ia Supernovae as distance indicators
... •What makes type Ia supernovae good distance indicators? –Very common • Average-mass progenitor ...
... •What makes type Ia supernovae good distance indicators? –Very common • Average-mass progenitor ...
Supernovae — Oct 21 10/21/2011 • Outline
... Pressure on the walls of the box is caused by the gas hitting the walls. Gas transfers momentum to the walls. Mental picture: Marbles hit the walls; wall pushes back. ...
... Pressure on the walls of the box is caused by the gas hitting the walls. Gas transfers momentum to the walls. Mental picture: Marbles hit the walls; wall pushes back. ...
Chapter 27 Stars and Galaxies
... Some white dwarfs do not just cool and die. They will have one or more large explosions and become a nova A supernova is a star that has such a tremendous explosion that it blows itself apart. Before a supernova all of the stars elements will be fused into iron ...
... Some white dwarfs do not just cool and die. They will have one or more large explosions and become a nova A supernova is a star that has such a tremendous explosion that it blows itself apart. Before a supernova all of the stars elements will be fused into iron ...
ASTR100 Homework #5 Solutions Chapter 11 #29, 31 Due
... Decide whether the statement makes sense or does not. Explain clearly. If you could look inside the Sun today, you’d find that its core contains a much higher proportion of helium and a lower proportion of hydrogen than it did when the Sun was born. This statement makes sense because over the last 4 ...
... Decide whether the statement makes sense or does not. Explain clearly. If you could look inside the Sun today, you’d find that its core contains a much higher proportion of helium and a lower proportion of hydrogen than it did when the Sun was born. This statement makes sense because over the last 4 ...
Constants and Equations
... please calculate the absolute magnitude of a Type Ia Supernova during its peak brightness. (5 pt.) 21) Assume a Type Ia Supernova is 163 Mly away from Earth, please calculate the brightest apparent magnitude of this supernova. 22) Please calculate the wavelength of Hα spectral line in nm. ...
... please calculate the absolute magnitude of a Type Ia Supernova during its peak brightness. (5 pt.) 21) Assume a Type Ia Supernova is 163 Mly away from Earth, please calculate the brightest apparent magnitude of this supernova. 22) Please calculate the wavelength of Hα spectral line in nm. ...
Lund Observatory Department of Astronomy and Theoretical Physics
... 3. The structure of a massive star in a stadium where the energy production almost has ceased can be shown by a schematic figure. Draw such a figure and specify the main elements found in different regions of the star. 4. 4 He is produced both at Big Bang and in stars. While the production of helium on ...
... 3. The structure of a massive star in a stadium where the energy production almost has ceased can be shown by a schematic figure. Draw such a figure and specify the main elements found in different regions of the star. 4. 4 He is produced both at Big Bang and in stars. While the production of helium on ...
Chapter 16
... The supernova explosion is caused when the overlying layers of the stellar atmosphere free-fall onto the core and literally bounce – off, creating a shock wave that blows off all the other overlying layers, in a spectacular explosion, that we know as a Supernova. The supernova explosion produces so ...
... The supernova explosion is caused when the overlying layers of the stellar atmosphere free-fall onto the core and literally bounce – off, creating a shock wave that blows off all the other overlying layers, in a spectacular explosion, that we know as a Supernova. The supernova explosion produces so ...
Bez tytułu slajdu
... The neutron ball is similar to a giant atomic nucleus with Z=1057. With such a big compression, neutrons start to "crowd-up", following the Pauli's rule, which does not allow them to be in the same quantum state. It is energetically useful to replace some neutrons with protons, or even by isolated q ...
... The neutron ball is similar to a giant atomic nucleus with Z=1057. With such a big compression, neutrons start to "crowd-up", following the Pauli's rule, which does not allow them to be in the same quantum state. It is energetically useful to replace some neutrons with protons, or even by isolated q ...
Powerpoint
... • Often strong radio sources • Fainter at peak than SN Ia by about 1.5 magnitudes. Otherwise similar light curve. ...
... • Often strong radio sources • Fainter at peak than SN Ia by about 1.5 magnitudes. Otherwise similar light curve. ...
Exploding Massive Stars:
... First steps toward understanding the role of magnetic fields… What impact will they have on the collapse and postbounce dynamics? How much do they factor into generating the explosion? ...
... First steps toward understanding the role of magnetic fields… What impact will they have on the collapse and postbounce dynamics? How much do they factor into generating the explosion? ...
Comet Pan-Starrs 12 March 2013
... • Massive stars (M>8M) make large cores – Massive star (core collapse) supernovae are Type II ...
... • Massive stars (M>8M) make large cores – Massive star (core collapse) supernovae are Type II ...
Study Guide_galaxies, Tools, and Stars Test
... 6. Name and describe the 3 types of galaxies. 7. Where is our solar system located in the Milky Way galaxy? 8. What is a light year? 9. What contains all the matter and energy that exists? 10. Name two types of optical telescopes. 11. What do radio telescopes receive and where do they come from? 12. ...
... 6. Name and describe the 3 types of galaxies. 7. Where is our solar system located in the Milky Way galaxy? 8. What is a light year? 9. What contains all the matter and energy that exists? 10. Name two types of optical telescopes. 11. What do radio telescopes receive and where do they come from? 12. ...
Presentation available here - Lunar and Planetary Institute
... All core collapse explosions are asymmetric, maybe produced by magnetic jets. How can this be proved? Gamma-ray bursts are caused by jets of material moving at nearly the speed of light. Do they mark the birth of black holes? At least some gamma-ray bursts (and maybe all) arise in supernova ex ...
... All core collapse explosions are asymmetric, maybe produced by magnetic jets. How can this be proved? Gamma-ray bursts are caused by jets of material moving at nearly the speed of light. Do they mark the birth of black holes? At least some gamma-ray bursts (and maybe all) arise in supernova ex ...
Plotting Supernova Light Curves
... galaxy M100, taken with the Faulkes Telescopes. The software package, SalsaJ will be used to carry out photometry on the supernova in the galaxy and standard star (a star which has already had its magnitude accurately calculated) close to the galaxy. The images you will use were taken on different d ...
... galaxy M100, taken with the Faulkes Telescopes. The software package, SalsaJ will be used to carry out photometry on the supernova in the galaxy and standard star (a star which has already had its magnitude accurately calculated) close to the galaxy. The images you will use were taken on different d ...
What is a star`s life cycle?
... Write true if the statement is true. If the statement is false, change the underlined term to make the statement true. ____________________ 1. A star changes its heat into energy. ____________________ 2. In 1987, a protostar was observed in the Large Magellanic Cloud. ____________________ 3. During ...
... Write true if the statement is true. If the statement is false, change the underlined term to make the statement true. ____________________ 1. A star changes its heat into energy. ____________________ 2. In 1987, a protostar was observed in the Large Magellanic Cloud. ____________________ 3. During ...
Type I SuperNova
... The two might collide and form one star, which will collapse due to its mass and cause the carbon-detonation supernova. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
... The two might collide and form one star, which will collapse due to its mass and cause the carbon-detonation supernova. The carbon/oxygen fuse explosively, blowing the entire system into space and leaving nothing behind. ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... supernovae—stars exploding in cataclysmic stellar suicide—but did not act like familiar supernovae. Instead of brightening over a period of maybe three weeks (about 20 days), they seemed to take nearly three months (about 80 days). At first, no host galaxy could be found, so Howell and his colleague ...
... supernovae—stars exploding in cataclysmic stellar suicide—but did not act like familiar supernovae. Instead of brightening over a period of maybe three weeks (about 20 days), they seemed to take nearly three months (about 80 days). At first, no host galaxy could be found, so Howell and his colleague ...
Degeneracy pressure Normal/degeneracy pressure White dwarfs — Oct 10
... • Records of Sung Dynasty • In the first year of the period Chih-ho, …, a guest star appeared several degrees SE of Thien-kuan. After more than a year it gradually became invisible.−p578. ...
... • Records of Sung Dynasty • In the first year of the period Chih-ho, …, a guest star appeared several degrees SE of Thien-kuan. After more than a year it gradually became invisible.−p578. ...
a Supernova!
... But there is 100x as much energy again in the form of rapidly-moving material (kinetic energy)… and 100 times as much again in the form of neutrinos. That is, the energy in the form of neutrinos is 10,000 times as much as the visible light it produces!! ...
... But there is 100x as much energy again in the form of rapidly-moving material (kinetic energy)… and 100 times as much again in the form of neutrinos. That is, the energy in the form of neutrinos is 10,000 times as much as the visible light it produces!! ...
History of supernova observation
The known history of supernova observation goes back to 185 CE, when, supernova SN 185 appeared, the oldest appearance of a supernova recorded by humankind. Several additional supernovae within the Milky Way galaxy have been recorded since that time, with SN 1604 being the most recent supernova to be observed in this galaxy.Since the development of the telescope, the field of supernova discovery has expanded to other galaxies. These occurrences provide important information on the distances of galaxies. Successful models of supernova behavior have also been developed, and the role of supernovae in the star formation process is now increasingly understood.