The Korean 1592--1593 Record of a Guest Star: Animpostor`of the
... During the last thousand years, five supernova (SN) events in the Milky Way have been witnessed and recorded in history books of East Asian and/or European countries: SN 1006, 1054, 1181, 1572, and 1604 (Stephenson & Green 2002). Each of them was visible to the naked eye in the night sky over a peri ...
... During the last thousand years, five supernova (SN) events in the Milky Way have been witnessed and recorded in history books of East Asian and/or European countries: SN 1006, 1054, 1181, 1572, and 1604 (Stephenson & Green 2002). Each of them was visible to the naked eye in the night sky over a peri ...
Observers` Forum - British Astronomical Association
... secondary towards the primary, but because it has substantial angular momentum it forms an accretion disc around the primary. In the case of HR Lyr, much of the light at quiescence probably comes from this accretion disc, HR Lyr between 2009 June 29 and 2010 Oct 28. Data from the BAA VSS so the rece ...
... secondary towards the primary, but because it has substantial angular momentum it forms an accretion disc around the primary. In the case of HR Lyr, much of the light at quiescence probably comes from this accretion disc, HR Lyr between 2009 June 29 and 2010 Oct 28. Data from the BAA VSS so the rece ...
PH607lec12
... Within a few minutes, the flux of a faint source increased by a factor of 5-6 and fainted again after about 30 min. The flare was found to have happened within a few milli-arcseconds of the position of Sgr A*. The short rise-and-decay times told us that the source of the flare was located within les ...
... Within a few minutes, the flux of a faint source increased by a factor of 5-6 and fainted again after about 30 min. The flare was found to have happened within a few milli-arcseconds of the position of Sgr A*. The short rise-and-decay times told us that the source of the flare was located within les ...
Geol. 655 Isotope Geochemistry
... engaged in this work would have referred to themselves simply as physicists). We noted this began with Thomson, who built the first mass spectrometer and discovered Ne consisted of 2 isotopes (actually, it consists of three, but one of them, 21Ne is very much less abundant than the other two, and Th ...
... engaged in this work would have referred to themselves simply as physicists). We noted this began with Thomson, who built the first mass spectrometer and discovered Ne consisted of 2 isotopes (actually, it consists of three, but one of them, 21Ne is very much less abundant than the other two, and Th ...
Dark Matter Search
... • As we start the third year of operations, we have only scratched the surface of what the Fermi Gamma-ray Space Telescope can do. – The gamma-ray sky is changing every day, so there is always something new to learn about the extreme Universe. ...
... • As we start the third year of operations, we have only scratched the surface of what the Fermi Gamma-ray Space Telescope can do. – The gamma-ray sky is changing every day, so there is always something new to learn about the extreme Universe. ...
D109-08x
... galaxies. The images, taken over several wavelengths, provide evidence of the "galactic assault and battery," namely, gas being stripped from the doomed galaxy, called C153. The composite photograph at left was made by combining the four images at right, taken in X-ray, radio, and visible wavelength ...
... galaxies. The images, taken over several wavelengths, provide evidence of the "galactic assault and battery," namely, gas being stripped from the doomed galaxy, called C153. The composite photograph at left was made by combining the four images at right, taken in X-ray, radio, and visible wavelength ...
22 pm - Starmap
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
... As a starting point, face North, holding the map in your eyesight direction, with its North down. As you change the direction, rotate the map accordingly. The objects listed on the first page can be observed with naked eyes, in clear skies, with moderate light pollution. Close your eyes one minute a ...
EvoluGon of high mass stars Solar-‐type stars end their lives by
... These are stars composed almost en=rely of neutrons, with radii ≈ 10 km, leh over aher a core-‐collapse supernova. They are supported against gravita=onal collapse by neutron degeneracy pressure. Their ...
... These are stars composed almost en=rely of neutrons, with radii ≈ 10 km, leh over aher a core-‐collapse supernova. They are supported against gravita=onal collapse by neutron degeneracy pressure. Their ...
Universe Discovery Guides: January
... the next generations of stars, rocky planets, and life — like you! But how does that wealth of elements get out of that storehouse deep inside the star? Well, that’s the next phase in the life of Betelgeuse. Betelgeuse will eventually explode as a supernova blasting its store of heavy elements out i ...
... the next generations of stars, rocky planets, and life — like you! But how does that wealth of elements get out of that storehouse deep inside the star? Well, that’s the next phase in the life of Betelgeuse. Betelgeuse will eventually explode as a supernova blasting its store of heavy elements out i ...
Chapter 9 / Adobe Acrobat Document
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
... to those aboard the shuttle—seven astronauts died during the Challenger launch disaster and another seven astronauts died when Columbia broke up on re-entry. 28. Hubble and Humason’s distance-redshift relationship: the universe’s expansion has been confirmed by observations at very large distances a ...
copyright 2002 scientific american, inc.
... a compact space, the photons must be so densely packed that they should interact and prevent one another from escaping. The situation is like a crowd of people who are running for the exit in such a panic that that nobody can get out. But if the gamma rays are unable to escape, how can we be seeing ...
... a compact space, the photons must be so densely packed that they should interact and prevent one another from escaping. The situation is like a crowd of people who are running for the exit in such a panic that that nobody can get out. But if the gamma rays are unable to escape, how can we be seeing ...
Main Types of Galaxies
... Irregular Galaxies • Do not fit into any other category. • Chaotic mix of stars, gas and dust • Usually found near large spiral galaxies who may be distorting their shape. ...
... Irregular Galaxies • Do not fit into any other category. • Chaotic mix of stars, gas and dust • Usually found near large spiral galaxies who may be distorting their shape. ...
Galaxies Powerpoint
... Irregular Galaxies • Do not fit into any other category. • Chaotic mix of stars, gas and dust • Usually found near large spiral galaxies who may be distorting their shape. ...
... Irregular Galaxies • Do not fit into any other category. • Chaotic mix of stars, gas and dust • Usually found near large spiral galaxies who may be distorting their shape. ...
Universe 8e Lecture Chapter 24 Galaxies
... cluster of galaxies is not large enough to account for the observed motions of the galaxies; a large amount of unobserved mass must also be present. This situation is called the dark-matter problem. Hot intergalactic gases in rich clusters account for a small part of the unobserved mass. These gases ...
... cluster of galaxies is not large enough to account for the observed motions of the galaxies; a large amount of unobserved mass must also be present. This situation is called the dark-matter problem. Hot intergalactic gases in rich clusters account for a small part of the unobserved mass. These gases ...
Galaxy5
... stars retained their orbits and made the halo of the Galaxy. • The gas collided and sunk to the center. The Milky Way was built up piece-meal in this fashion. • Today, galaxy interactions between the primary spiral galaxy and its satellites are much less frequent, because there are few satellites re ...
... stars retained their orbits and made the halo of the Galaxy. • The gas collided and sunk to the center. The Milky Way was built up piece-meal in this fashion. • Today, galaxy interactions between the primary spiral galaxy and its satellites are much less frequent, because there are few satellites re ...
ASTR 1101-001 Spring 2008 - Louisiana State University
... • Easily (and now frequently) detected in other galaxies. (Statistically, every galaxy should display 1-3 supernovae every 100 yrs.) • The light display from each SN generally can be categorized as one of several standard “types”: – Type Ia – Type Ib, Ic – Type II ...
... • Easily (and now frequently) detected in other galaxies. (Statistically, every galaxy should display 1-3 supernovae every 100 yrs.) • The light display from each SN generally can be categorized as one of several standard “types”: – Type Ia – Type Ib, Ic – Type II ...
Document
... • The scenario that leads to nova explosions can produce an even wilder phenomenon. • In the early 1900s `novae’ were sometimes observed in other galaxies and were used to help set the distances to galaxies. • But, when it became clear that even the nearest galaxies were much further away than anyon ...
... • The scenario that leads to nova explosions can produce an even wilder phenomenon. • In the early 1900s `novae’ were sometimes observed in other galaxies and were used to help set the distances to galaxies. • But, when it became clear that even the nearest galaxies were much further away than anyon ...
How many stars are in the Milky Way Galaxy?
... • The center of this distribution shows the location of the galactic center. ...
... • The center of this distribution shows the location of the galactic center. ...
Stellar Evolution
... • The core runs out of fuel! • Shell fusion begins outside the core. • Eventually the process shell fusion creates too much outward pressure and energy which explosively pushes out the outer layers of the star and produce a ...
... • The core runs out of fuel! • Shell fusion begins outside the core. • Eventually the process shell fusion creates too much outward pressure and energy which explosively pushes out the outer layers of the star and produce a ...
the summary
... A GRB afterglow can be observed over a broad range of wavelengths: from X-rays, ultraviolet to optical, infrared and radio waves. All of this radiation is light; only the energy per photon (or equivalently wavelength, or frequency) is different. While the initial gamma-rays are observed from space w ...
... A GRB afterglow can be observed over a broad range of wavelengths: from X-rays, ultraviolet to optical, infrared and radio waves. All of this radiation is light; only the energy per photon (or equivalently wavelength, or frequency) is different. While the initial gamma-rays are observed from space w ...
Integrative Studies 410 Our Place in the Universe
... Universe • measure distances to other galaxies using the periodluminosity relationship for Cepheid variables • Type I supernovae also used to measure distances – Predictable luminosity – a standard candle ...
... Universe • measure distances to other galaxies using the periodluminosity relationship for Cepheid variables • Type I supernovae also used to measure distances – Predictable luminosity – a standard candle ...
30.2 PowerPoint Stellar Evolution
... Stingray nebula (Hen-1357), the youngest known planetary nebula. ...
... Stingray nebula (Hen-1357), the youngest known planetary nebula. ...
Small Wonders: Andromeda
... there - especially when you compare it to the two foreground stars that flank it. At mag 13.7, it's a somewhat dim target tho, so the more aperture you can throw at this, the better your chances of finding it. It's certainly doable in a 10" scope from a decent site, and more than likely is catchable ...
... there - especially when you compare it to the two foreground stars that flank it. At mag 13.7, it's a somewhat dim target tho, so the more aperture you can throw at this, the better your chances of finding it. It's certainly doable in a 10" scope from a decent site, and more than likely is catchable ...
Life Stages of High
... • Energy released by the collapse of the core drives outer layers into space. • The Crab Nebula is the remnant of the supernova seen in A.D. 1054. ...
... • Energy released by the collapse of the core drives outer layers into space. • The Crab Nebula is the remnant of the supernova seen in A.D. 1054. ...
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.