Deep Space Mystery Note Form 2
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
... During this short interval, a supernova can radiate as much energy as our Sun could emit over its life span. The explosion expels much or all of the star’s material and causes a shock wave into the surrounding interstellar medium. The interstellar medium is the gas and dust that exists between the s ...
Miss Nevoral - Ms. Nevoral`s site
... 2. Explain why scientific theories are not considered the final truth/fact about something. Theories are developed with existing information. The main ideas about a theory may change if new evidence arises or there is a breakthrough with technology, etc. Therefore, we can not say that a theory is a ...
... 2. Explain why scientific theories are not considered the final truth/fact about something. Theories are developed with existing information. The main ideas about a theory may change if new evidence arises or there is a breakthrough with technology, etc. Therefore, we can not say that a theory is a ...
Astrophysics Presentation
... temperatures and disappeared at others Different lines appear with different degrees of ionisation – which results from different temperatures ...
... temperatures and disappeared at others Different lines appear with different degrees of ionisation – which results from different temperatures ...
poster
... above the circum-stellar absorption layer. We constrain the model space from the observed X-ray parameters and, adding information from the literature, we build a physical model that interprets the X-ray emission in terms of an outflow. We find that only a very small fraction of the total mass loss ...
... above the circum-stellar absorption layer. We constrain the model space from the observed X-ray parameters and, adding information from the literature, we build a physical model that interprets the X-ray emission in terms of an outflow. We find that only a very small fraction of the total mass loss ...
Supernovae – the biggest bangs since the Big Bang
... day. The outer layers squeeze down on the core and it explodes. Astronomers call this a “Type II supernova”. Stars that end as Type II supernovae range in mass from 8 to (maybe) 100 times that of the Sun. Because the amount of material that explodes varies from object to object, these supernovae ...
... day. The outer layers squeeze down on the core and it explodes. Astronomers call this a “Type II supernova”. Stars that end as Type II supernovae range in mass from 8 to (maybe) 100 times that of the Sun. Because the amount of material that explodes varies from object to object, these supernovae ...
Astronomy 102, Spring 2003 Solutions to Review Problems
... star is older? Which star started its life with more mass? Given that we’ve talked about how far apart stars are in the galaxy, they almost never run into each other. (It’s a different matter in the cores of globular clusters, and even right at the center of our galaxy, but consider the Solar neighb ...
... star is older? Which star started its life with more mass? Given that we’ve talked about how far apart stars are in the galaxy, they almost never run into each other. (It’s a different matter in the cores of globular clusters, and even right at the center of our galaxy, but consider the Solar neighb ...
galaxy.
... April 1920: the Curtis-Shapely debate Shapely (Harvard): Argued that spiral nebulae were inside our galaxy for several reasons • Galaxy was huge (he didn’t know about dust). • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, ...
... April 1920: the Curtis-Shapely debate Shapely (Harvard): Argued that spiral nebulae were inside our galaxy for several reasons • Galaxy was huge (he didn’t know about dust). • van Maanen’s observations showed that one spiral nebula, M 101, could be observed to rotate. It it were outside our galaxy, ...
Far Ultraviolet Spectroscopic Explorer
... Supernovae and their remnants (ghosts!) form a fascinating and complex part of the ongoing process of stellar evolution, energizing and enriching the interstellar medium. Individual objects show a variety of characteristics that do not always track the “standard model.” Collectively, SNRs can affect ...
... Supernovae and their remnants (ghosts!) form a fascinating and complex part of the ongoing process of stellar evolution, energizing and enriching the interstellar medium. Individual objects show a variety of characteristics that do not always track the “standard model.” Collectively, SNRs can affect ...
Sample final exam
... moving toward M31 and that the Large Magellenic Cloud [LMC] is moving toward us.” First, explain what we observe about these galaxies (M31, the LMC) that shows they are moving in the directions the text states. I thought motion was all relative; if the Milky Way is moving toward M31, then M31 is mov ...
... moving toward M31 and that the Large Magellenic Cloud [LMC] is moving toward us.” First, explain what we observe about these galaxies (M31, the LMC) that shows they are moving in the directions the text states. I thought motion was all relative; if the Milky Way is moving toward M31, then M31 is mov ...
A105 Stars and Galaxies
... The Galactic Center in X-rays This false-color image of the central region of our Milky Way Galaxy was made with the Chandra X-ray telescope. The bright, point-like source at the center of the image was produced by a huge X-ray flare in the vicinity of the supermassive black hole. ...
... The Galactic Center in X-rays This false-color image of the central region of our Milky Way Galaxy was made with the Chandra X-ray telescope. The bright, point-like source at the center of the image was produced by a huge X-ray flare in the vicinity of the supermassive black hole. ...
stellar remenants
... around the center of mass between them. • Guestamate the mass of visible star, then using Kepler’s 3rd Law, calculate the mass of the other object. • If mass is too large for neutron star or white dwarf, most likely a black ...
... around the center of mass between them. • Guestamate the mass of visible star, then using Kepler’s 3rd Law, calculate the mass of the other object. • If mass is too large for neutron star or white dwarf, most likely a black ...
main characteristics of the emission from elliptical galaxies
... primarly due to a halo of extremely hot gas in which ellipticals seem to be embedded. After a brief classi cation, the two main processes linked to these phenomena will be described, together with the informations we can collect thanks to them. Eventually, we will take a quick look at the other regi ...
... primarly due to a halo of extremely hot gas in which ellipticals seem to be embedded. After a brief classi cation, the two main processes linked to these phenomena will be described, together with the informations we can collect thanks to them. Eventually, we will take a quick look at the other regi ...
Lecture 7 Stars and Galaxies and Nebula, (Oh My!) Feb 18 2003
... Outer layers of gas are blown off from the core of a star. The core often goes on to become a white dwarf. The eject gas is illuminated by the remaining star. This is the fate of most stars, including our own Sun. ...
... Outer layers of gas are blown off from the core of a star. The core often goes on to become a white dwarf. The eject gas is illuminated by the remaining star. This is the fate of most stars, including our own Sun. ...
Lec12
... move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
... move into spiral arms 2. Squeezing of clouds triggers star formation 3. Young stars flow out of spiral arms ...
Document
... equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of th ...
... equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of th ...
AGN jets
... equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of th ...
... equivalent isotropic luminosity 1049 erg/s. Collimation θ2/2 ~ 10-2 – 10-3. θ – jet opening angle. EGRET detected 66 (+27) sources of this type. New breakthrough is expected after the launch of GLAST. Several sources have been detected in the TeV range by ground-based gamma-ray telescopes. All of th ...
HW6 due - Yale Astronomy
... The sun will collide with another star of the same size (radius = 1 Rsun) if it comes within a distance of 2Rsun of that star. (Their edges will just touch if they come within a distance ...
... The sun will collide with another star of the same size (radius = 1 Rsun) if it comes within a distance of 2Rsun of that star. (Their edges will just touch if they come within a distance ...
Return both exam and scantron sheet when you
... 47. The cosmological redshift is caused by (a) gravity. (b) expansion of space. (c) light passing through gas and dust. (d) Doppler effect. 48. Astronomers have determined the mass of the supermassive black hole at the center of the Milky Way by (a) measuring its Schwarzschild radius RS against back ...
... 47. The cosmological redshift is caused by (a) gravity. (b) expansion of space. (c) light passing through gas and dust. (d) Doppler effect. 48. Astronomers have determined the mass of the supermassive black hole at the center of the Milky Way by (a) measuring its Schwarzschild radius RS against back ...
www.astro.utu.fi
... The white dwarfs capture WIMPS, which eventually annihilate, providing energy White dwarfs glow hotter and brighter than they otherwise would, at the toasty temperature of 60 K entire galaxy glows with same luminosity as Sun! this fuel source will eventually run out too, and stars begin to fade ...
... The white dwarfs capture WIMPS, which eventually annihilate, providing energy White dwarfs glow hotter and brighter than they otherwise would, at the toasty temperature of 60 K entire galaxy glows with same luminosity as Sun! this fuel source will eventually run out too, and stars begin to fade ...
The Main Features of the X
... molecular cloud falling into the plane of the Galaxy Cygnus Superbubble/Loop: nearby superbubble from the explosion of many Sne, 14 times the size (at 400 pc in diameter) of the Cynus Loop, a 20,000 year old SNR emitting thermal bremsstrahlung as soft x-rays. North Polar Spur (NPS)/Loop 1: The NPS i ...
... molecular cloud falling into the plane of the Galaxy Cygnus Superbubble/Loop: nearby superbubble from the explosion of many Sne, 14 times the size (at 400 pc in diameter) of the Cynus Loop, a 20,000 year old SNR emitting thermal bremsstrahlung as soft x-rays. North Polar Spur (NPS)/Loop 1: The NPS i ...
galaxies
... • young stars! only a few million years old • may still be surrounded by nebula from which they formed • located in the spiral arms of a galaxy • example: Pleiades ...
... • young stars! only a few million years old • may still be surrounded by nebula from which they formed • located in the spiral arms of a galaxy • example: Pleiades ...
Galaxies Powerpoint
... gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
... gas, and dust in space that are held together by gravity. • The largest galaxies contain more than a trillion stars. Smaller galaxies may have only a few million. • Scientists estimate the number of stars from the size and brightness of the galaxy. ...
MSL Electromagnetic Spectrum
... Doppler Effect Summary Motion toward or away from an observer causes a shift in the observed wavelength of light: • blueshift (shorter wavelength) motion toward you ...
... Doppler Effect Summary Motion toward or away from an observer causes a shift in the observed wavelength of light: • blueshift (shorter wavelength) motion toward you ...
Gamma-ray burst
Gamma-ray bursts (GRBs) are flashes of gamma rays associated with extremely energetic explosions that have been observed in distant galaxies. They are the brightest electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several hours. The initial burst is usually followed by a longer-lived ""afterglow"" emitted at longer wavelengths (X-ray, ultraviolet, optical, infrared, microwave and radio).Most observed GRBs are believed to consist of a narrow beam of intense radiation released during a supernova or hypernova as a rapidly rotating, high-mass star collapses to form a neutron star, quark star, or black hole. A subclass of GRBs (the ""short"" bursts) appear to originate from a different process – this may be due to the merger of binary neutron stars. The cause of the precursor burst observed in some of these short events may be due to the development of a resonance between the crust and core of such stars as a result of the massive tidal forces experienced in the seconds leading up to their collision, causing the entire crust of the star to shatter.The sources of most GRBs are billions of light years away from Earth, implying that the explosions are both extremely energetic (a typical burst releases as much energy in a few seconds as the Sun will in its entire 10-billion-year lifetime) and extremely rare (a few per galaxy per million years). All observed GRBs have originated from outside the Milky Way galaxy, although a related class of phenomena, soft gamma repeater flares, are associated with magnetars within the Milky Way. It has been hypothesized that a gamma-ray burst in the Milky Way, pointing directly towards the Earth, could cause a mass extinction event.GRBs were first detected in 1967 by the Vela satellites, a series of satellites designed to detect covert nuclear weapons tests. Hundreds of theoretical models were proposed to explain these bursts in the years following their discovery, such as collisions between comets and neutron stars. Little information was available to verify these models until the 1997 detection of the first X-ray and optical afterglows and direct measurement of their redshifts using optical spectroscopy, and thus their distances and energy outputs. These discoveries, and subsequent studies of the galaxies and supernovae associated with the bursts, clarified the distance and luminosity of GRBs. These facts definitively placed them in distant galaxies and also connected long GRBs with the explosion of massive stars, the only possible source for the energy outputs observed.