Wheres the matter? MS1512-cB58 (arrowed) may be surrounded by it.
Light bending reveals clumps of matter around early galaxy.
European astronomers have got their first glimpse of the soup of matter that surrounded a galaxy in the early Universe, just 3 billion years after the Big Bang. Their results provide clues as to how this matter got together, which is crucial to understanding why the Universe looks the way it does today1.
The 12-billion-year-old galaxy is called MS 1512-cB58. It is not the earliest galaxy known, but because of a cosmic coincidence it is by far the brightest of its vintage.
This is crucial information to astronomers. They know that matter cooled and slowly clumped together after the Big Bang, forming stars and galaxies. But how much of this stuff there was, and how quickly it came together, is a mystery.
Savaglio’s results suggest that it happened relatively quickly. "If 12 billion years ago there were already clusters of clouds, it means that the Universe was in a very evolved state," she says.
Chuck Steidel, who studies galaxy formation at the California Institute of Technology in Pasadena, is cautious about drawing conclusions from measurements of a single galaxy. He views Savaglio’s findings rather as proof that galaxies can be used to do background surveys of matter in the Universe.
Unfortunately MS 1512-cB58 is the only galaxy that can be used to study the distribution of matter using today’s technology. Future telescopes - like the proposed Next Generation Space Telescope - may be able to probe the matter surrounding galaxies just as old without the help of a gravitational lens. This should make thousands of galaxies available for study.
Savaglio’s team bent over backwards to see the magnified galaxy. MS 1512-cB58 lies in the Earth’s northern skies, yet the VLT is in the south. There are northern telescopes more powerful than the VLT, but none is sensitive enough to the ultraviolet light that Savaglio’s team were looking for. So they pointed the telescope just above the horizon in the Chile’s northern sky to see MS 1512-cB58. "It was practically lying down," recalls Savaglio.
TOM CLARKE | © Nature News Service
Long-lived storage of a photonic qubit for worldwide teleportation
12.12.2017 | Max-Planck-Institut für Quantenoptik
Telescopes team up to study giant galaxy
12.12.2017 | International Centre for Radio Astronomy Research
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
11.12.2017 | Event News
08.12.2017 | Event News
07.12.2017 | Event News
12.12.2017 | Earth Sciences
12.12.2017 | Power and Electrical Engineering
12.12.2017 | Life Sciences