Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

IBEX sheds new light on solar system boundary

21.10.2015

In 14 papers published in the October 2015 Astrophysical Journal Supplement, scientists present findings from NASA's Interstellar Boundary Explorer, or IBEX, mission providing the most definitive analyses, theories and results about local interstellar space to date.

IBEX uses energetic neutral atom imaging to examine how our heliosphere, the magnetic bubble in which our sun and planets reside, interacts with interstellar space. IBEX created the first global maps showing these interactions and how they change over time. IBEX also directly measures interstellar neutral atoms flowing into the solar system; the journal's special issue focuses on these particles.


This is an artist's rendition of NASA's Interstellar Boundary Explorer, or IBEX, in space, where it collects observations of the boundaries of our solar system.

Credits: NASA

"Over the past six years, this fundamental work focused on our place in the solar system has become the gold standard for understanding our sun, our heliosphere and the interstellar environment around us," said David McComas, principal investigator of the IBEX mission at the Southwest Research Institute, or SwRI, in San Antonio, Texas.

Eight papers highlight the interstellar helium measurements taken by IBEX and the joint European Space Agency and NASA Ulysses spacecraft, which launched in 1990. These are the only two spacecraft to have directly measured the local interstellar flow of these helium atoms.

The studies resolved an inconsistency in the direction and temperature of the interstellar flow in the data gathered by Ulysses compared to those taken by IBEX. Both data sets now affirm that the local interstellar flow is significantly hotter than believed previously based on the Ulysses observations alone, and provide insight into the direction the heliosphere is moving through the local material in the galaxy, as well as how fast it is traveling.

Two papers examine aspects of determining the composition of interstellar particles, looking closely at oxygen, helium, and neon, as well as how those and other particles are effectively measured. The final four papers discuss analysis techniques and related theoretical considerations, such as the effects of radiation pressure and how planetary gravity affects the course of neutral atoms as they travel through the heliosphere.

"Collectively, these papers represent a huge step forward in our understanding of the interstellar medium in the heliophysics community," said McComas.

Initially a two-year mission, funding for IBEX has been extended through 2017, with the potential for mission extensions beyond that. IBEX is one of NASA's series of low-cost, rapidly developed Heliophysics Small Explorer space missions.

"For a Small Explorer, the scientific output has been tremendous," said Eric Christian, IBEX mission scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "These 14 new papers seven years after launch show just how exciting a mission this is."

The Southwest Research Institute in San Antonio, Texas, leads IBEX with teams of national and international partners. NASA Goddard manages the Explorers Program for the agency's Heliophysics Division within the Science Mission Directorate in Washington.

Susan Hendrix | EurekAlert!

More articles from Physics and Astronomy:

nachricht Observing and controlling ultrafast processes with attosecond resolution
20.02.2018 | Technische Universität München

nachricht Unconventional superconductor may be used to create quantum computers of the future
19.02.2018 | Chalmers University of Technology

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: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Rare find from the deep sea

20.02.2018 | Life Sciences

In living color: Brightly-colored bacteria could be used to 'grow' paints and coatings

20.02.2018 | Life Sciences

Observing and controlling ultrafast processes with attosecond resolution

20.02.2018 | Physics and Astronomy

VideoLinks
Science & Research
Overview of more VideoLinks >>>