Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gemini Observatory Probes Galaxy’s Churning Core

25.03.2002


Image: Jon Lomberg


Astronomers using the Gemini North Telescope on Hawaii’s Mauna Kea report that they have created a three-dimensional movie of a powerful, active galaxy located some 70 million light years away. The addition of a new instrument, the Integral Field Unit (IFU), to the Gemini telescope enabled the group to study light from the galaxy NGC1068 in much greater detail. From a single still of NGC1068, the IFU generated data on the physical conditions and velocities of galactic material throughout the image. This information, in turn, allowed the astronomers to create an animated picture that provides a fresh look at the workings of the galaxy, including an enormous pair of jets bursting out of a suspected black hole at its core. Two reports on these findings will appear in the Conference Series of the Astronomical Society of the Pacific.

The benefit of using the advanced Gemini telescope, the scientists say, stems from its capacity for capturing and refining light. In this case, the IFU transmits the enormous volume of light collected by Gemini through hundreds of tiny optical fibers, each of which bears a micro-lens at its tip. The optical fibers send the light to an advanced spectrograph, which produces a single spectrum for each fiber--1500 in all. From that data, the researchers can describe and track the motions of gas or stars at any point in the image. "When we play back our movie of the galaxy NGC1068, we see a three-dimensional view of the core," says Bryan Miller, the Gemini instrument scientist for IFUs. Of particular interest are the two jets that extend out from the galaxy’s center. Gemini scientist Jean-Rene Roy compares the shockwave-type effect the enormous jets inflict on the galaxy’s surrounding gaseous disk to that of "a huge wave smashing onto a galactic shoreline."

More advanced IFUs may provide better images still. Within the next two years, for instance, new optical and near-infrared IFUs will be used on both Gemini North and a sister telescope in Chile. These new systems should produce some of the highest resolution images obtainable by telescopes, enabling astronomers to study in even closer detail the dynamics of distant galaxies.


Greg Mone | Scientific American
Further information:
http://www.gemini.edu/media/IFUImages.html

More articles from Physics and Astronomy:

nachricht Studying fundamental particles in materials
17.01.2017 | Max-Planck-Institut für Struktur und Dynamik der Materie

nachricht Seeing the quantum future... literally
16.01.2017 | University of Sydney

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

17.01.2017 | Materials Sciences

Smart homes will “LISTEN” to your voice

17.01.2017 | Architecture and Construction

VideoLinks
B2B-VideoLinks
More VideoLinks >>>