A geyser of hot gas flowing from a star

Jul 03, 2012
The NASA/ESA Hubble Space Telescope has captured a new image of Herbig-Haro 110, a geyser of hot gas flowing from a newborn star. HH 110 appears different from most other Herbig-Haro objects: in particular, it appears on its own while they usually come in pairs. Astronomers think it may be a continuation of another object called HH 270, after it has been deflected off a dense cloud of gas. Credit: NASA, ESA and the Hubble Heritage team (STScI/AURA)

(Phys.org) -- The NASA/ESA Hubble Space Telescope has captured a new image of Herbig-Haro 110, a geyser of hot gas flowing from a newborn star.

Although Herbig-Haro (HH) objects come in a wide array of shapes, the basic configuration is usually the same. Twin jets of heated gas, ejected in opposite directions from a forming star, stream through . These outflows are fueled by gas falling onto the young star, which is surrounded by a disc of dust and gas. If the disc is the , the star is the gravitational engine, and the jets are the exhaust.

In Hubble's image of HH 110, one such turbulent streamer of gas can clearly be seen streaking across the frame.

The intricate structures within HH 110 and other Herbig-Haro objects exist because the jets are not being blown through a pure vacuum. When the energetic and fast-moving Herbig-Haro jets slam into colder gas, they form shock fronts that look and behave much like the bow waves that form in front of a boat. These so-called , which glow thanks to very , are a distinctive feature of Herbig-Haro objects.

The structure of HH 110 and other objects like it acts like a ticker-tape, recording the activity of the star that is the origin of the jet. Erratic outbursts from the star happen at times when more matter is falling in, and these are recorded as brighter knots or blobs within the Herbig-Haro object, which move along the jet over the years. Although the jets are very fast-moving, they are also very large: the streamer of gas in this image is around half a light-year in length. This means that the motion appears quite slow from our vantage point, even when measured over years.

By measuring the current speed and positions of blobs within a Herbig-Haro object, astronomers can rewind time, projecting the motion of the knots backwards to the moment when they were emitted. This in turn tells the scientists about the environment directly around the forming star.

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andreas_zita
not rated yet Jul 03, 2012
Is the star itself moving due to this jet?
Shelgeyr
2.2 / 5 (6) Jul 03, 2012
A geyser of hot gas flowing from a star

A "geyser"? Really? That's their choice of meaning-packed descriptive term? "...of hot gas?" They mean "plasma", actually, but it seems they're trying to avoid using the term.

...one such turbulent streamer of gas...

...One such Birkeland Current of plasma...

The intricate structures within HH 110 and other Herbig-Haro objects exist because...

...the laws governing electromagnetic phenomena dictate their scalable ordered patterns.

When the energetic and fast-moving Herbig-Haro jets slam into colder gas, they form...

Plasma double layers.

...astronomers can rewind time, projecting the motion of the knots backwards...

And for their next trick, Ladies and Gentlemen, watch them unscramble an egg! Right this way! Pay no attention to that man behind the curtain!
HannesAlfven
2.3 / 5 (6) Jul 03, 2012
That somebody would look at that object and, without skipping a beat, accept that it is the result of gravity is testament to the faith-based approach we see in science today. Rather than critically thinking about the claim, members of the public are simply placing faith in the conventional theorists that they've fully exhausted all of the possible explanations. News flash: They haven't.

It's not that the inference is truly somehow obvious; it's that the journalists treat it as such, and the readers -- who have themselves refused to learn about the behavior of laboratory plasmas -- are simply ill-equipped to realize how silly that inference is.

People need to turn off their information bubbles. Please, guys, learn the behavior of laboratory plasmas. One might consider it an important thing to know, considering that 99% of what we see with our telescopes is matter in the plasma state. We've only known it for more than 50 years now ..
A2G
2 / 5 (4) Jul 03, 2012
I can make this formation in a vacuum chamber very easily. But there is a lot more to it than just the EU model that is put forth. That is why I previously challenged Hannes to make some of these formations that they claim to fully understand. These are not Birkeland currents. Please stop reiterated that like other's do with DM, DE, etc.

But this can all be formed with magnetic fields and electricity. A complete disclosure of our findings should be online soon. I have still photos, but working on putting together a larger chamber and a low light video system to record it all.

You EU guys are on the right track, but still a long ways from the total answer. You have to have your magnetic fields just right and you speak very little of the EM fields structure required to truly make this formation occur. But once you have it right ejection jets are really cool to watch in action. BTW the ejection jets come out of the top of magnetic bubbles that trap matter.

Cool to see.