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Bow Shock

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Bow shock is a term used to describe something that may occur during the creation of a bow wave: the bowed shape of oncoming waves around an impenetrable object.

 


Bow Shock
The boundary between the undisturbed solar wind and the region being deflected around the planet or comet
Breccia ...

Bow shock --a sharp front formed in the solar wind ahead of the magnetosphere, marked by a sudden slowing-down of the flow near Earth. It is quite similar to the shock forming ahead of the wing of a supersonic airplane.

Bow Shock - The region where the solar wind is slowed as it impinges on the Earth's magnetosphere
Broad Line Region - The high-density region in a quasar where broad emission lines are formed ...

[edit] Bow shock
Main article: Bow shock
It is hypothesised that the Sun also has a bow shock as it travels through the interstellar medium, as shown in the figure.

Bow shock around the very young star LL Ori.
Stars form in dense molecular clouds within galaxies. These clouds of dust and gas obscure the early stages of stellar formation from optical telescopes.

Bow shock The supersonic shock wave on the sunward side of the Earth caused by the blast of the solar wind against the Earth's magnetosphere. Solar wind is slowed to subsonic speeds and heated very rapidly as it arrives at the bow shock.

BOW SHOCK
A bow shock is a supersonic shock wave that is formed as the interacts with the outermost layer of a planet's (or a highly conducting ionosphere).

A bow shock in space is created when two streams of gas collide. The intense solar wind from the young star featured in the center of this image is colliding with the slow-moving gas that is evaporating away from the center of the nebula (right of ...

Because the bow shock acts like a balloon when hit, oscillating in and out, Cassini actually crossed it several times, resulting in the seven sonic booms depicted above. Red denotes louder waves, and blue quieter.

A bow wave or bow shock is the progressive disturbance propagated through a fluid such as water or air as the result of displacement by the foremost point of an object moving through it.

magnetosheath (Earth's Magnetosphere Glossary - GSFC) The region between the magnetopause and the bow shock, containing solar wind which has been slowed down by passage through the bow shock.

Using simulations of a planet and its bow shock transiting a star and investigating various shock geometries, orientations and densities, Vidotto and her team have reproduced the dip in ultraviolet light observed in WASP-12b.

As the solar wind (the flow of charged particles streaming outward from the Sun) impacts a planet at supersonic speeds, it generally forms a bow shock on the sunward side of the planet--that is, a standing wave of plasma that slows down, heats, ...

An additional feature is a collision-free bow shock which forms in the solar wind ahead of Earth, typically at 13.5 RE on the sunward side.

The imaginary surface at which the solar wind is first deflected is called the bow shock.

Before a star finishes forming, around a tenth of the matter around it may be ejected by infalling through its accretion disk and then being blown out by bi-polar jets (more NASA photos) to produce two giant lobes of molecular gas, and bow shocks ...

During the end of FE or the beginning of NE, a bow shock crossing may be identified through data from the magnetometer, the plasma instrument and plasma wave instrument as the spacecraft flies into a planet's magnetosphere and leaves the solar wind.

At about 75 Jupiter radii from the planet, the interaction of the magnetosphere with the solar wind generates a bow shock.

It was not heading toward the Sun, but the bow shock caused the storm. The number of sunspots is also up. This caused the northern lights to appear on the 18th. Another three CMEs left the Sun on the 20th! ...

Another hop, skip, and a jump takes us to the heliopause, where the stream of particles emitted by the Sun collides with the galactic gases of interstellar space, forming a so-called "bow shock.

(Photo D) HH47 is more than a trillion km in length, or nearly 0.1pc. This photo shows one of its jets plowing through interstellar space, creating bow shocks in the process.
LEARNING GOALS
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It forms an obstacle in the path of the solar wind, causing it to be diverted around it, at a distance of about 70,000 km (before it reaches that boundary, typically 12,000­15,000 km upstream, a bow shock forms).

The precise shape and location of the heliopause is not known but it is probably similar in shape to the Earth's magnetosphere and the bow shock is probably about 110 - 160 AU from the Sun.

the re-entry vehicle as it skids and then enters the atmosphere at extremely high temperatures. In the vacuum chamber connected to the nozzle, a heat-shield tile array model is tested for durability and is photographed as it experiences a bow shock ...

See also: Solar, Sun, Earth, Field, Orbit