Deep Space Mystery Note Form 3
... The core could have temperatures of billions of degrees Celsius. Iron atoms are so squeezed so much. The forces of their nuclei create a recoil of the squeezed core. Then is the supernova. Type II Type II Binary stars are when there are two stars and they revolve around each other. In ...
... The core could have temperatures of billions of degrees Celsius. Iron atoms are so squeezed so much. The forces of their nuclei create a recoil of the squeezed core. Then is the supernova. Type II Type II Binary stars are when there are two stars and they revolve around each other. In ...
Observing at Other Wavelengths
... X-Rays: The Origins Astronomical X-ray sources were first found unexpectedly in the 1960s, in rocket experiments. They come from highly energetic sources ...
... X-Rays: The Origins Astronomical X-ray sources were first found unexpectedly in the 1960s, in rocket experiments. They come from highly energetic sources ...
Benchmark lesson
... Compared with the Earth, the Sun is huge. A single sunspot on the Sun’s surface may be larger than the entire planet we live on. However, when compared to other stars, our Sun is not very large or very hot. It is an average star. Some stars are much smaller than the Sun while other stars can be more ...
... Compared with the Earth, the Sun is huge. A single sunspot on the Sun’s surface may be larger than the entire planet we live on. However, when compared to other stars, our Sun is not very large or very hot. It is an average star. Some stars are much smaller than the Sun while other stars can be more ...
Theme 6 – Observing at Other Wavelengths
... The Physics Defines the Wavelength To study cool gas, we need to work with radio waves, with wavelengths of centimetres or even metres – at least ten thousand times the wavelength of optical light. Imagine smearing out the dots of light in this picture of Orion to ten thousand times their size! All ...
... The Physics Defines the Wavelength To study cool gas, we need to work with radio waves, with wavelengths of centimetres or even metres – at least ten thousand times the wavelength of optical light. Imagine smearing out the dots of light in this picture of Orion to ten thousand times their size! All ...
BlackHolesOLD - Montgomery College
... Black Holes: Accreted matter disappears beyond the event horizon without a trace. ...
... Black Holes: Accreted matter disappears beyond the event horizon without a trace. ...
Chapter 15: The Deaths of Massive Stars
... 3. The binary pulsar system has been perfect for studying predictions of general relativity; it was the first instance of the use of general relativity to calculate a stellar property, and the first precise determination of the mass of a neutron star. 4. This system indirectly confirms general relat ...
... 3. The binary pulsar system has been perfect for studying predictions of general relativity; it was the first instance of the use of general relativity to calculate a stellar property, and the first precise determination of the mass of a neutron star. 4. This system indirectly confirms general relat ...
Test#4
... a) the mean distance from the Earth to the Sun b) the distance to the closest star c) 3.26 light years d) the size of the Earth’s orbit 3. The direction in the sky that our solar system is moving toward is called the a) Apex b) Solar Peak c) Solar asymptote d) stellar destination 4. Which is brighte ...
... a) the mean distance from the Earth to the Sun b) the distance to the closest star c) 3.26 light years d) the size of the Earth’s orbit 3. The direction in the sky that our solar system is moving toward is called the a) Apex b) Solar Peak c) Solar asymptote d) stellar destination 4. Which is brighte ...
Chapter 16 Lesson 2: What is a Star
... 1. Irregular galaxies are probably young galaxies with their stars are still forming. Constellations a. Ursa Major is a constellation, an area of the sky and all the stars seen in that area, in the Milky Way. 1. A constellation is like a star’s address in which scientists use to help them locate sta ...
... 1. Irregular galaxies are probably young galaxies with their stars are still forming. Constellations a. Ursa Major is a constellation, an area of the sky and all the stars seen in that area, in the Milky Way. 1. A constellation is like a star’s address in which scientists use to help them locate sta ...
ppt
... pinwheel (we’ll see other examples). Structure difficult to detect because we live inside galaxy – literally can’t see the forest for the trees… Careful measurement reveals spiral arms, and shows that the disk is rotating differentially. ...
... pinwheel (we’ll see other examples). Structure difficult to detect because we live inside galaxy – literally can’t see the forest for the trees… Careful measurement reveals spiral arms, and shows that the disk is rotating differentially. ...
The Fate of Massive Stars
... Hotter --> Higher Luminosity cutoff Greater mass-loss/stellar winds for cooler stars at lower luminosities Stellar winds important contribution to ISM Massive Stars ability to quench star formation Massive stars rare (1 in 1,000,000) but important role in the evolution of galaxies ...
... Hotter --> Higher Luminosity cutoff Greater mass-loss/stellar winds for cooler stars at lower luminosities Stellar winds important contribution to ISM Massive Stars ability to quench star formation Massive stars rare (1 in 1,000,000) but important role in the evolution of galaxies ...
Our Sun Produces Bizarre Radiation Bursts—Now NASA Knows Why
... during a flare would interact locally with the sun’s surface and produce gamma rays that are close to the active region. But Fermi has also seen gamma rays coming from the sun even when no flares are erupting on the side it can see. Now, scientists think they know what’s happening. Working with NASA ...
... during a flare would interact locally with the sun’s surface and produce gamma rays that are close to the active region. But Fermi has also seen gamma rays coming from the sun even when no flares are erupting on the side it can see. Now, scientists think they know what’s happening. Working with NASA ...
Review: How does a star`s mass determine its life story?
... same place cannot be in the same state • Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 Msun . I call it the Oppenheimer ...
... same place cannot be in the same state • Neutron degeneracy pressure can no longer support a neutron star against gravity if its mass exceeds about 3 Msun . I call it the Oppenheimer ...
Spinar Paradigm
... event. A spinar can be viewed as an intermediate state of a collapsing object whose lifetime is determined by the time scale of dissipation of the angular momentum. As Lipunova & Lipunov (1998) pointed out, the centrifugal barrier could explain the long (from several seconds to several hours) durati ...
... event. A spinar can be viewed as an intermediate state of a collapsing object whose lifetime is determined by the time scale of dissipation of the angular momentum. As Lipunova & Lipunov (1998) pointed out, the centrifugal barrier could explain the long (from several seconds to several hours) durati ...
Galaxies
... concentration (3%) heavy elements Population II – red, old, found in bulge and halo, elliptical orbits, low concentration of heavy elements Probably smooth transition between end members (i.e. the sun). ? Population III ? – pure H and He ...
... concentration (3%) heavy elements Population II – red, old, found in bulge and halo, elliptical orbits, low concentration of heavy elements Probably smooth transition between end members (i.e. the sun). ? Population III ? – pure H and He ...
Essay - CLC Charter School
... much energy as the sun will in a life- time, and the explosion is equivalent to the power in a 1028 megaton bomb (i.e., a few octillion nuclear warheads). How Do Supernovae Occur Supernovae occur when the star’s core fusion process runs out of fuel. The outward pressure drops, causing the gravitatio ...
... much energy as the sun will in a life- time, and the explosion is equivalent to the power in a 1028 megaton bomb (i.e., a few octillion nuclear warheads). How Do Supernovae Occur Supernovae occur when the star’s core fusion process runs out of fuel. The outward pressure drops, causing the gravitatio ...
NOVAE and SUPERNOVAE
... Occur only in stars whose masses are greater than 8 M. At the end of its life, massive stars form an iron core by fusing silicon. The iron core forms in a few days. Fusion ends at this point. The core has a mass of about 2 M. The iron core cannot support itself and collapses, from a size of ...
... Occur only in stars whose masses are greater than 8 M. At the end of its life, massive stars form an iron core by fusing silicon. The iron core forms in a few days. Fusion ends at this point. The core has a mass of about 2 M. The iron core cannot support itself and collapses, from a size of ...
Cosmology Î Bottom-Up formation of structures
... • Plug into equations for luminosity or angular size distance as needed (Ned Wright’s Cosmology Calculator) ...
... • Plug into equations for luminosity or angular size distance as needed (Ned Wright’s Cosmology Calculator) ...
Document
... distant galaxy. • Astronomers considered (briefly) the possibility of an alien civilization sending the regular pulses. ...
... distant galaxy. • Astronomers considered (briefly) the possibility of an alien civilization sending the regular pulses. ...
The Milky Way - Houston Community College System
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host galaxies at large (cosmological) distances. ...
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host galaxies at large (cosmological) distances. ...
Neutron Star
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host galaxies at large (cosmological) distances. ...
... Later discovered with X-ray and optical afterglows lasting several hours – a few days Many have now been associated with host galaxies at large (cosmological) distances. ...
Topic 6 Introduction
... for dispersing pre-processed elements into the interstellar medium for further processing during (new) star formation • SN are the death throes of massive stars – Typical kinetic energy release: 1044 J – Typical total energy release: 1046 J (100x that of the Sun for 10 billion years) – Temporari ...
... for dispersing pre-processed elements into the interstellar medium for further processing during (new) star formation • SN are the death throes of massive stars – Typical kinetic energy release: 1044 J – Typical total energy release: 1046 J (100x that of the Sun for 10 billion years) – Temporari ...
15.2 Characteristics of Stars
... • X-Rays: Your doctor uses them to look at your bones and your dentist to look at your ...
... • X-Rays: Your doctor uses them to look at your bones and your dentist to look at your ...
PSC100 Transparant Replacement for Chapter 8 Measurement of
... * Measure time for reflected signal to return to Earth. * Calculate distance as speed of light x time of travel. Stellar Parallax * Measure angle to star at two different times. * Use largest base line possible, the diameter of Earth’s orbit around the Sun * This means data readings must be taken 6 ...
... * Measure time for reflected signal to return to Earth. * Calculate distance as speed of light x time of travel. Stellar Parallax * Measure angle to star at two different times. * Use largest base line possible, the diameter of Earth’s orbit around the Sun * This means data readings must be taken 6 ...
PowerPoint - Chandra X
... with the explosion center inferred from proper motions of the oxygen-rich optical filaments, and confirms the idea that Puppis A resulted from an asymmetric explosion accompanied by the recoil of the neutron star. The kinetic energy associated with the transverse motion of the neutron star is only a ...
... with the explosion center inferred from proper motions of the oxygen-rich optical filaments, and confirms the idea that Puppis A resulted from an asymmetric explosion accompanied by the recoil of the neutron star. The kinetic energy associated with the transverse motion of the neutron star is only a ...
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.