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  Encyclopedia of Keywords > Science > Astronomy > Universe > Galaxies > Redshift   Michael Charnine

Keywords and Sections
FACTOR
PHOTOMETRY
GRAVITY
QUANTISATION
EMITTER
MAARTEN SCHMIDT
AVERAGE REDSHIFT
RECESSIONAL VELOCITY
REDSHIFT PAGE
LIGHT ESCAPING
GRAVITATIONAL REDSHIFT EFFECT
MEDIAN REDSHIFT
ALTERNATIVE REDSHIFT THEORIES
LAST SCATTERING
GALAXY REDSHIFT SURVEYS
LAS CAMPANAS REDSHIFT SURVEY
BASIC INTERPRETATIONS
REDSHIFT VALUES
DOPPLER REDSHIFT
LOWER REDSHIFT
HIGH REDSHIFT
EXERCISE
INCREASING
CHANGING
LOOK
COMPONENT
FIRST
LITERATURE
GREATER
ANALYSIS
HIGHER
VALUE
ASSUMING
SOURCE
PROPAGATION
MAP
SKY
METHOD
VARIATIONS
GRAPH
PLOT
TYPE
RELATIONSHIP
WAY
MILKY WAY
SOLAR SYSTEM
Review of Short Phrases and Links

    This Review contains major "Redshift"- related terms, short phrases and links grouped together in the form of Encyclopedia article.

Definitions

  1. A redshift is a shift in the frequency of a photon toward lower energy, or longer wavelength.
  2. A redshift is a measure of the distance to an object.
  3. Redshift is a measure of how much the wavelengths of light are shifted to longer wavelengths. (Web site)
  4. Redshift is the amount by which light is shifted toward the red end of an object's spectrum by the expansion of the universe.
  5. Redshift is a measure of how fast galaxies are moving away from Earth. (Web site)

Factor

  1. We observe the redshift of a supernova which tells us by what the factor the Universe has expanded since the supernova exploded.

Photometry

  1. However, photometry does allow at least for a qualitative characterization of a redshift.

Gravity

  1. For gravity, the effect is called a gravitational redshift.
  2. Hence, gravity is terminated by redshift of gauge boson force-causing exchange radiation over such massive distances, and there's no global curvature. (Web site)

Quantisation

  1. Finally, there have been occasional claims of evidence of quantisation of redshift.

Emitter

  1. In general, gravitational redshift is an indicator of black hole mass and spin as well as for the inclination angle of the emitter, e.g.

Maarten Schmidt

  1. The most distant quasar now surpasses a quasar discovered in 1991 at a redshift of 4.89 by astronomers Donald Schneider, Maarten Schmidt and James Gunn.

Average Redshift

  1. Find the average redshift from these data. (Web site)

Recessional Velocity

  1. The recessional velocity of a galaxy is usually measured from the redshift observed in its emitted electromagnetic radiation.

Redshift Page

  1. My suggestion is to further split the Redshift page, creating new cosmological redshift and relativistic doppler effect articles.

Light Escaping

  1. An example of gravitational redshift is light escaping from the surface of a neutron star.

Gravitational Redshift Effect

  1. The gravitational redshift effect, by which the wavelength of light increases as it moves away from a massive object.

Median Redshift

  1. The total number of galaxies selected is 196, with a median redshift of 0.01 and a maximum redshift of 0.07. (Web site)

Alternative Redshift Theories

  1. Alternative redshift theories are those that are presumed to have not been caused by one of three generally accepted causes of redshift (i.e. (Web site)

Last Scattering

  1. They determined the thickness of the surface of last scattering to be 195 ± 2 in redshift, or kyr.

Galaxy Redshift Surveys

  1. This approach to estimating distances from the redshift alone has become a major industry with galaxy redshift surveys. (Web site)
  2. Galaxy redshift surveys The distribution of galaxies in local redshift surveys is highly clumpy, with the Supergalactic Plane seen in full glory.

Las Campanas Redshift Survey

  1. The Las Campanas Redshift Survey (LCRS) consists of 26418 redshifts for galaxies selected from a CCD-based catalog measured in a Kron-Cousins R-band.

Basic Interpretations

  1. See the mechanisms section below for some basic interpretations that follow when either a redshift or blue shift is observed.

Redshift Values

  1. Find the average redshift and the range of redshift values. (Web site)

Doppler Redshift

  1. A more complete treatment of the Doppler redshift requires considering relativistic effects associated with motion of sources close to the speed of light.
  2. A Doppler redshift arises when an object moves away from us.

Lower Redshift

  1. They must have a redshift z 0.8, as an irregular galaxy at lower redshift would be too red. (Web site)
  2. If anybody would like to show us a small physically-interacting companion with a LOWER redshift than its host galaxy, please post a link. (Web site)

High Redshift

  1. Best of all was to have supernovae at high redshift where the effect would not be subtle. (Web site)
  2. Finally, the statistical variation in the number of scatterings will lead to a broadening of spectral lines at high redshift which is not seen. (Web site)
  3. At high redshift there exists the DEEP2 Redshift Survey.

Exercise

  1. Enter the redshift of one galaxy from Exercise 2. (Web site)

Increasing

  1. Conversely, if the distance between that object and the Earth is increasing, then the observed redshift of that object is increased. (Web site)

Changing

  1. In one view, the spatial positions of galaxies are changing, and this causes the redshift.

Look

  1. Let us now look into the details of the concept of "redshift". (Web site)

Component

  1. The redshift component that is already understood by everyone, is that caused by the object's velocity-vector relative to the Earth. (Web site)
  2. In general, for this component of redshift, younger objects have higher redshifts. (Web site)

First

  1. We work out the first and second order Modified Friedmann equations and present the upper redshift bounds when these approximations are valid.
  2. The first derives from relative velocities as divulged by the measured redshift of radiation wavelengths (see below for details). (Web site)
  3. Recently, the first direct determination of the gravitational redshift of spectral lines produced in the neutron star photosphere has been obtained [ 74].

Literature

  1. Detailed and referenced photometry, position, and redshift data, have been taken from large compilations and from the literature.

Greater

  1. In the three succeeding spectal images, the horizontal arrow carries to the position of the two dark H and K lines after each greater redshift. (Web site)
  2. The more distant the galaxy, the greater the redshift. (Web site)

Analysis

  1. It was this object in Virgo, 3 C 273, that was first identified as a non-stellar object, by Maarten Schmidt, from the analysis of its redshift. (Web site)

Higher

  1. Since the universe is expanding, the more distant galaxies are receding at a faster rate and thus have a higher redshift. (Web site)
  2. Infrared searches are more useful for finding more distant (higher redshift) clusters.

Value

  1. The process of enlarging space leads to a lengthening of the wavelength of light - hence the progressive drop in the redshift value of z. (Web site)
  2. The gravitational redshift detected came within ten percent of the computed value.

Assuming

  1. Distances implied by assuming the validity of the Hubble relation between redshift and distance.

Source

  1. The redshift of an object is the amount by which the spectral lines in the source are shifted to the red.
  2. Gravitational redshift is observed if the receiver is located at higher gravitational potential than the source.

Propagation

  1. Thus there can be no redshift due to the Compton effect unless there is a change in the direction of propagation. (Web site)

Map

  1. To improve the resolution of the map, data from galaxies both with and without redshift information were used. (Web site)

Sky

  1. But it turns out that only almost every galaxy in the sky has a redshift in its spectrum. (Web site)
  2. These objects look like stars on an image of the sky, but their spectra show strong emission lines at high redshift. (Web site)

Method

  1. This method, like type Ia supernovae studies, measures distance as a function of redshift and traces the acceleration of the Universe directly. (Web site)

Variations

  1. To determine the redshift, features in the spectrum such as spectral line, spectral line, or other variations in light intensity, are searched for.

Graph

  1. When a Hubble's law -type plot of quasar magnitudes versus redshift is made, a graph with a diffuse scatter and no clear linear relation is generated.

Plot

  1. Each dot in this plot marks a galaxy whose distance is estimated from its redshift by using Hubble's Law. (Web site)
  2. As an example, consider the plot below showing galaxies from the Las Campanas Redshift Survey (provided by Ned Wright). (Web site)

Type

  1. Consequently, this type of redshift is called the Doppler redshift. (Web site)

Relationship

  1. Hubble knew that, and he came upo with the redshift - distance relationship when he proved that smaller & dimmer galaxies had biger redshifts.

Way

  1. Determining the redshift of an object in this way requires a frequency- or wavelength-range. (Web site)

Milky Way

  1. The final step on the distance ladder is redshift, the reddening of starlight in galaxies that are moving away from the Milky Way as the universe expands. (Web site)
  2. Nereid - your suggestion of using the SMC and the Milky Way is interesting, since the redshift component is due to the proper motion of the SMC toward us. (Web site)

Solar System

  1. The motion of the solar system, assuming a doppler interpretation, adds a real component to every redshift. (Web site)
  2. RedShift 4 allows you to recreate a view of the night sky from anywhere in the Solar System from 4700BC to 9999AD.

Categories

  1. Science > Astronomy > Universe > Galaxies
  2. Hubble
  3. Information > Science > Astronomy > Universe
  4. Spectrum
  5. Wavelengths

Related Keywords

    * Astronomers * Astronomy * Atomic Hydrogen * Big Bang * Billion Light-Years * Blueshift * Blue Shift * Constant * Cosmological * Cosmological Redshift * Cosmology * Distances * Distant * Distant Galaxies * Distant Galaxy * Doppler Effect * Doppler Shift * Earth * Effect * Effects * Energy * Estimate * Evolution * Expanding * Expanding Universe * Expansion * First Galaxy * Frequency * Galaxies * Galaxy * General Relativity * Gravitational Redshift * Hubble * Hubble Images * Hubble Redshift * Large-Scale Structure * Light * Luminosity * Magnitude * Measure * Model * Moving * Objects * Observation * Observations * Observer * Photons * Proportional * Quasar * Quasars * Redshifts * Red End * Relation * Scale Factor * Scattering * Shift * Slipher * Space * Spectra * Spectral * Spectrum * Supernova * Supernovae * Survey * Time * Time Dilation * Universe * Vacuum * Vast Distances * Wavelength * Wavelengths
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  Short phrases about "Redshift"
  Originally created: May 14, 2008.
  Links checked: May 01, 2013.
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