Supernova Stalking - Susanna Kumlien Reportage
... was conducted by Ariel Goobar, another member of the Stockholm team. The discovery made world news, and the eager reader of Loft Bookazine may recall a tidbit on the topic (Volume 1, 2014). The supernova in the galaxy of M82, also known as the Cigar Nebula, proved to be a Type 1a-supernova, a so-cal ...
... was conducted by Ariel Goobar, another member of the Stockholm team. The discovery made world news, and the eager reader of Loft Bookazine may recall a tidbit on the topic (Volume 1, 2014). The supernova in the galaxy of M82, also known as the Cigar Nebula, proved to be a Type 1a-supernova, a so-cal ...
Hitomi Observation of the Highly Obscured High-Mass X-ray
... of continuum and line components significantly decreased in this ten years while the equivalent widths increased. Unabsorbed luminosity in 2 to 10 keV is 5.8×1035 ergs/s, which is far below the Eddington limit of 1.8×1038 ergs/s for a neutron star of 1.4 M⊙ and hence permits moderate accretion. The ...
... of continuum and line components significantly decreased in this ten years while the equivalent widths increased. Unabsorbed luminosity in 2 to 10 keV is 5.8×1035 ergs/s, which is far below the Eddington limit of 1.8×1038 ergs/s for a neutron star of 1.4 M⊙ and hence permits moderate accretion. The ...
Notes - Michigan State University
... • core shrinks until degeneracy pressure sets in and halts collapse star is HOT (gravitational energy !) star is small WD M-R relation Hamada-Salpeter Ap.J. 134 (1961) 683 ...
... • core shrinks until degeneracy pressure sets in and halts collapse star is HOT (gravitational energy !) star is small WD M-R relation Hamada-Salpeter Ap.J. 134 (1961) 683 ...
The Cosmic Near-Infrared Background: Remnant light form
... absolute photometry imaging and spectroscopy experiment optimized to detect signatures of first-light galaxies present during reionization in the unresolved IR background. CIBER-I consists of a wide-field two-color camera for fluctuation measurements, a low-resolution absolute spectrometer for absol ...
... absolute photometry imaging and spectroscopy experiment optimized to detect signatures of first-light galaxies present during reionization in the unresolved IR background. CIBER-I consists of a wide-field two-color camera for fluctuation measurements, a low-resolution absolute spectrometer for absol ...
CH29 The Life of a Star
... THE UNIVERSE The Universe contains billions of galaxies with each galaxy containing billions of ...
... THE UNIVERSE The Universe contains billions of galaxies with each galaxy containing billions of ...
Slide 1
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo Cluster, which has three supergiant ellipticals (M87 contains accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 ric ...
... of the Virgo Cluster (a 'rich' cluster) and about 100 other clusters including Local Grp. We are falling toward Virgo Cluster, which has three supergiant ellipticals (M87 contains accretion disk indicating BH or WH in center--a quadrillion solar masses!) The Pisces-Cetus Complex: may include 400 ric ...
Our Galaxy -- The Milky Way PowerPoint
... – Most of the Milky Way’s mass is beyond the Sun • The visible mass cannot account for this mass • Much of the mass beyond the Sun is “dark matter” ...
... – Most of the Milky Way’s mass is beyond the Sun • The visible mass cannot account for this mass • Much of the mass beyond the Sun is “dark matter” ...
Galaxy1
... stars in the sky. This is because they have extremely large luminosity. They can be readily seen at great distances. • The stars in our little volume of the Galaxy are almost completely, low mass stars. • This means if we increased the volume that we are using to search for stars, we would start to ...
... stars in the sky. This is because they have extremely large luminosity. They can be readily seen at great distances. • The stars in our little volume of the Galaxy are almost completely, low mass stars. • This means if we increased the volume that we are using to search for stars, we would start to ...
the Full Chapter 6 -
... Hubble’s Deep Fields On 9 March 2004 astronomers at NASA and ESA released the deepest-ever image of the distant Universe, showing no less than ten thousand galaxies out to distances of some thirteen billion light-years. This Hubble Ultra Deep Field (left) still serves as a rich cosmological goldmin ...
... Hubble’s Deep Fields On 9 March 2004 astronomers at NASA and ESA released the deepest-ever image of the distant Universe, showing no less than ten thousand galaxies out to distances of some thirteen billion light-years. This Hubble Ultra Deep Field (left) still serves as a rich cosmological goldmin ...
Astronomy (stars, galaxies and the Universe)
... enormous explosion of concentrated matter and energy As it expanded, the Universe cooled Atoms formed after a few hundred million years The first stars and galaxies formed after about 200 million years ...
... enormous explosion of concentrated matter and energy As it expanded, the Universe cooled Atoms formed after a few hundred million years The first stars and galaxies formed after about 200 million years ...
lecture19 - Stony Brook University
... that are moving away from us with huge speeds, using the observed Doppler shifts of known spectral lines. This indicates that they are very very far away (we will make this connection between recessional velocity and distance clear later – it’s called the Hubble expansion of the universe). From the ...
... that are moving away from us with huge speeds, using the observed Doppler shifts of known spectral lines. This indicates that they are very very far away (we will make this connection between recessional velocity and distance clear later – it’s called the Hubble expansion of the universe). From the ...
color-stellar mass diagram
... more recent studies based on 39,000 galaxies from surveys DEEP2 and COMBO-17 (Faber et al 2007) have provided evidence also for evolution of the LF of red galaxies, with a decrease of MB* and an increase of φ* (parameters of the Schechter LF) ...
... more recent studies based on 39,000 galaxies from surveys DEEP2 and COMBO-17 (Faber et al 2007) have provided evidence also for evolution of the LF of red galaxies, with a decrease of MB* and an increase of φ* (parameters of the Schechter LF) ...
Messier Galaxies of #202541
... important tool used to indicate how an object will look. However, when it is finally located, the object’s brightness may appear much differently than expected. One reason is that the integrated magnitude value indicates the brightness of the extended object as if it was concentrated in a point sour ...
... important tool used to indicate how an object will look. However, when it is finally located, the object’s brightness may appear much differently than expected. One reason is that the integrated magnitude value indicates the brightness of the extended object as if it was concentrated in a point sour ...
Einstein
... This gives a value that’s a little high ~1.7M. A more accurate value of the limit than that given by this simple model requires adjusting for various factors, including electrostatic interactions between the electrons and nuclei and effects caused by nonzero temperature. A rigorous derivation of t ...
... This gives a value that’s a little high ~1.7M. A more accurate value of the limit than that given by this simple model requires adjusting for various factors, including electrostatic interactions between the electrons and nuclei and effects caused by nonzero temperature. A rigorous derivation of t ...
Types of Galaxies - Spring Branch ISD
... Life cycle of star –stages & outcomes for both low mass & high mass stars ...
... Life cycle of star –stages & outcomes for both low mass & high mass stars ...
Astronomy Study Guide
... Life cycle of star –stages & outcomes for both low mass & high mass stars ...
... Life cycle of star –stages & outcomes for both low mass & high mass stars ...
ASTRONOMY: WHAT DO YOU NEED TO KNOW
... Ionized gasses surrounding a white dwarf seen as the result of slow gas ejected by the red giant being compressed by the fast gases as the red giant collapses into a white dwarf Know the characteristics and lifespan characteristics of white dwarfs. Does not undergo nuclear fusion but rather contains ...
... Ionized gasses surrounding a white dwarf seen as the result of slow gas ejected by the red giant being compressed by the fast gases as the red giant collapses into a white dwarf Know the characteristics and lifespan characteristics of white dwarfs. Does not undergo nuclear fusion but rather contains ...
Volcanoes and Igneous Activity Earth - Chapter 4
... the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students exc ...
... the use of instructors in teaching their courses and assessing student learning. Dissemination or sale of any part of this work (including on the World Wide Web) will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students exc ...
Chapter 40
... • Largest stars have no force strong enough to stop them from contracting • Collapse until they disappear from observable universe…a black hole • Speed of collapse increases until it is faster than the speed of light, therefore we can’t see ...
... • Largest stars have no force strong enough to stop them from contracting • Collapse until they disappear from observable universe…a black hole • Speed of collapse increases until it is faster than the speed of light, therefore we can’t see ...
Stars, Galaxies, and the Universe Section 3 Stars, Galaxies, and the
... • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • Within 5 million light-years of the Milky Way are about 30 other galaxies. These galaxies and the Milky Way galaxy are collectively called the Local Group. ...
... • Two irregular galaxies, the Large Magellanic Cloud and Small Magellanic Cloud, are our closest neighbors. • Within 5 million light-years of the Milky Way are about 30 other galaxies. These galaxies and the Milky Way galaxy are collectively called the Local Group. ...
Supernovae - Michigan State University
... • core shrinks until degeneracy pressure sets in and halts collapse star is HOT (gravitational energy !) star is small WD M-R relation Hamada-Salpeter Ap.J. 134 (1961) 683 ...
... • core shrinks until degeneracy pressure sets in and halts collapse star is HOT (gravitational energy !) star is small WD M-R relation Hamada-Salpeter Ap.J. 134 (1961) 683 ...
Chapter 31 Galaxies & the Universe
... Astronomers have determined the shape of the Milky Way by using radio waves because they penetrate the interstellar gas and dust without being scattered or absorbed. ...
... Astronomers have determined the shape of the Milky Way by using radio waves because they penetrate the interstellar gas and dust without being scattered or absorbed. ...
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.