Featured Research

from universities, journals, and other organizations

Possibly primordial gravitational waves, but galactic dust not ruled out: Nuanced account of stunning patterns in the microwave sky

Date:
June 19, 2014
Source:
American Physical Society
Summary:
Following a thorough peer-review process, the researchers who previously announced the detection of B-mode polarization in a patch of the microwave sky have published their findings. Their research provides some evidence that the signals they have found may be the result of gravitational waves from the earliest moments of the universe's existence and thus might constitute the first observation of phenomena from the rapid expansion of the universe known as the inflationary period.

Following a thorough peer-review process, the researchers who previously announced the detection of B-mode polarization in a patch of the microwave sky have published their findings today in the journal Physical Review Letters. The researchers provide some evidence that the signals they have found may be the result of gravitational waves from the earliest moments of the universe's existence and thus might constitute the first observation of phenomena from the rapid expansion of the universe known as the inflationary period.

The results from the BICEP2 experiment, the second generation of the Background Imaging of Cosmic Extragalactic Polarization experiment, are controversial in the astrophysics community, with various experts proposing that the signal may be an artifact resulting from distortions created by Galactic dust. The BICEP2 collaboration addresses these claims directly, changing, removing and adding some analyses, but they acknowledge that they cannot rule out the possibility that dust may be partly or entirely responsible for the gravitational-wave-like signals. They anticipate that forthcoming data will resolve this question about their potentially groundbreaking research.

Further information about the significance of the BICEP2 research is available in a special edition of the publication Physics, including a Viewpoint article (http://physics.aps.org/articles/v7/64) by Lawrence Krauss, a Physics Focus overview (http://physics.aps.org/articles/v7/65) by journalist David Lindley discussing a selection of recent Physical Review Letters theory articles on the wide-ranging implications of the finding for cosmology, particle physics and even dark-matter models, and an Editorial by the PRL Editors.


Story Source:

The above story is based on materials provided by American Physical Society. Note: Materials may be edited for content and length.


Journal References:

  1. P. A. R. Ade et al. Detection of B-Mode Polarization at Degree Angular Scales by BICEP2. Phys. Rev. Lett., 19 June 2014 DOI: 10.1103/PhysRevLett.112.241101
  2. Eds. Editorial: Signals from the Dawn of Time? Physical Review Letters, 2014; 112 (24) DOI: 10.1103/PhysRevLett.112.240001

Cite This Page:

American Physical Society. "Possibly primordial gravitational waves, but galactic dust not ruled out: Nuanced account of stunning patterns in the microwave sky." ScienceDaily. ScienceDaily, 19 June 2014. <www.sciencedaily.com/releases/2014/06/140619125529.htm>.
American Physical Society. (2014, June 19). Possibly primordial gravitational waves, but galactic dust not ruled out: Nuanced account of stunning patterns in the microwave sky. ScienceDaily. Retrieved September 21, 2014 from www.sciencedaily.com/releases/2014/06/140619125529.htm
American Physical Society. "Possibly primordial gravitational waves, but galactic dust not ruled out: Nuanced account of stunning patterns in the microwave sky." ScienceDaily. www.sciencedaily.com/releases/2014/06/140619125529.htm (accessed September 21, 2014).

Share This



More Matter & Energy News

Sunday, September 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

What This MIT Sensor Could Mean For The Future Of Robotics

What This MIT Sensor Could Mean For The Future Of Robotics

Newsy (Sep. 20, 2014) MIT researchers developed a light-based sensor that gives robots 100 times the sensitivity of a human finger, allowing for "unprecedented dexterity." Video provided by Newsy
Powered by NewsLook.com
MIT BioSuit A New Take On Traditional Spacesuits

MIT BioSuit A New Take On Traditional Spacesuits

Newsy (Sep. 19, 2014) The MIT BioSuit could be an alternative to big, bulky traditional spacesuits, but the concept needs some work. Video provided by Newsy
Powered by NewsLook.com
New Music With Recycled Instruments at Colombia Fest

New Music With Recycled Instruments at Colombia Fest

AFP (Sep. 19, 2014) Jars, bottles, caps and even a pizza box, recovered from the trash, were the elements used by four musical groups at the "RSFEST2014 Sonorities Recycling Festival", in Colombian city of Cali. Duration: 00:49 Video provided by AFP
Powered by NewsLook.com
Virtual Reality Headsets Unveiled at Tokyo Game Show

Virtual Reality Headsets Unveiled at Tokyo Game Show

AFP (Sep. 18, 2014) Several companies unveiled virtual reality headsets at the Tokyo Game Show, Asia's largest digital entertainment exhibition. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins