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Cosmic noise, the Glossary

Cosmic noise, also known as galactic radio noise, is a physical phenomenon derived from outside of the Earth's atmosphere.^[1]

41 relations: ARCADE, Arno Allan Penzias, Atomic nucleus, Bandwidth (signal processing), Bell Labs, Big Bang, Celestial sphere, Cosmic microwave background, Earth, Earth's magnetic field, Electron, Galactic Center, Galaxy, Hertz, Holmdel Horn Antenna, Ionization, Ionosphere, Johnson–Nyquist noise, Karl Guthe Jansky, Magnetic energy, Meteorite, Microwave, Milky Way, Nobel Prize in Physics, Optics, Outer space, Photosphere, Proton, Quasar, Radio frequency, Radio receiver, Radio wave, Radiometer, Research balloon, Robert H. Dicke, Robert Woodrow Wilson, Solar flare, Solar wind, Stellar corona, Sun, Universe.
Astronomical radio sources
Noise

ARCADE

Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE) is a program which utilizes high-altitude balloon instrument package intended to measure the heating of the universe by the first stars and galaxies after the big bang and search for the signal of relic decay or annihilation.

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Arno Allan Penzias

Arno Allan Penzias (April 26, 1933 – January 22, 2024) was an American physicist and radio astronomer.

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Atomic nucleus

The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.

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Bandwidth (signal processing)

Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.

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Bell Labs

Bell Labs is an American industrial research and scientific development company credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B, C, C++, S, SNOBOL, AWK, AMPL, and others.

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Big Bang

The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature.

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Celestial sphere

In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth.

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Cosmic microwave background

The cosmic microwave background (CMB or CMBR) is microwave radiation that fills all space in the observable universe. Cosmic noise and cosmic microwave background are astronomical radio sources.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.

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Electron

The electron (or in nuclear reactions) is a subatomic particle with a negative one elementary electric charge.

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Galactic Center

The Galactic Center is the barycenter of the Milky Way and a corresponding point on the rotational axis of the galaxy.

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Galaxy

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity.

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Hertz

The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second.

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Holmdel Horn Antenna

The Holmdel Horn Antenna is a large microwave horn antenna that was used as a satellite communication antenna and radio telescope during the 1960s at the Bell Telephone Laboratories facility located on Crawford Hill in Holmdel Township, New Jersey, United States.

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Ionization

Ionization (or ionisation specifically in Britain, Ireland, Australia and New Zealand) is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes.

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Ionosphere

The ionosphere is the ionized part of the upper atmosphere of Earth, from about to above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere.

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Johnson–Nyquist noise

Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.

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Karl Guthe Jansky

Karl Guthe Jansky (October 22, 1905 – February 14, 1950) was an American physicist and radio engineer who in April 1933 first announced his discovery of radio waves emanating from the Milky Way in the constellation Sagittarius.

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Magnetic energy

The potential magnetic energy of a magnet or magnetic moment \mathbf in a magnetic field \mathbf is defined as the mechanical work of the magnetic force on the re-alignment of the vector of the magnetic dipole moment and is equal to: E_\text.

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Meteorite

A meteorite is a rock that originated in outer space and has fallen to the surface of a planet or moon.

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Microwave

Microwave is a form of electromagnetic radiation with wavelengths shorter than other radio waves (as originally discovered) but longer than infrared waves.

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Milky Way

The Milky Way is the galaxy that includes the Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.

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Nobel Prize in Physics

The Nobel Prize in Physics (Nobelpriset i fysik) is an annual award given by the Royal Swedish Academy of Sciences for those who have made the most outstanding contributions to mankind in the field of physics.

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Optics

Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it.

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Outer space

Outer space (or simply space) is the expanse that exists beyond Earth's atmosphere and between celestial bodies.

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Photosphere

The photosphere is a star's outer shell from which light is radiated.

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Proton

A proton is a stable subatomic particle, symbol, H+, or 1H+ with a positive electric charge of +1 e (elementary charge).

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Quasar

A quasar is an extremely luminous active galactic nucleus (AGN).

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Radio frequency

Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around.

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Radio receiver

In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form.

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Radio wave

Radio waves are a type of electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically with frequencies below 300 gigahertz (GHz) and wavelengths greater than, about the diameter of a grain of rice.

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References

[1] https://en.wikipedia.org/wiki/Cosmic_noise

Cosmic noise, the Glossary

Table of Contents

See also

Astronomical radio sources

Noise

References