Sentences with phrase «galactic dust»

The BICEP2 instrument can not distinguish the cosmic contribution from other sources directly, so, measurements of galactic dust collected by other sources, such as the Planck satellites were used.

Editor's note: The findings reported in this story were later found to be caused by galactic dust.

Data from the South Pole experiment BICEP2 and the Planck probe point to galactic dust as a confounding signal

Data from the BICEP2 telescope (shown) may have provided the first evidence of gravitational waves and cosmic inflation, but scientists aren't sure how galactic dust affects the signal.

But because of galactic dust in the way, it has been difficult to use parallax on stars on the opposite side of the galaxy.

Yellow and red patches contain the most galactic dust.

Since astronomers don't know much about how strongly galactic dust polarizes light, researchers involved in the Background Imaging of Cosmic Extragalactic Polarization, or BICEP, experiment relied on whatever information they could get their hands on.

DUSTY DATA The BICEP2 team used a map of the entire sky (left) to estimate the effect of galactic dust on their measurements.

The image on the left is in visible light, and the image on the right is in infrared; the marked difference between the two images shows how infrared radiation can penetrate galactic dust.

But teasing out this primordial signal is difficult, as swirls in the CMB could also be caused by galactic dust, and confidence had started to wane by the official publication of the BICEP2 results in June.

This suggests that cold, dark clouds of galactic dust could contain seeds of life

But the team later had to backtrack on these claims, after it turned out they hadn't accounted for the effects of galactic dust.

Now details of a new analysis of their results have leaked, and they seem to reveal that galactic dust is the likely cause of their observations.

But upon further review, galactic dust may have been responsible for...

The evidence they have reported fails to convince me that the signal they interpret as being caused by gravitational waves is not, in fact, caused by galactic dust.

With only a single frequency reading, we can not tell if the B - mode signal is caused by galactic dust or by gravitational waves.

But upon further review, galactic dust may have been responsible for the signal instead.

It later turned out to be galactic dust.

And in the abstract to the final version, the team writes that its models of galactic dust «are not sufficiently constrained by external public data to exclude the possibility of dust emission bright enough to explain the entire excess signal.»

«Detecting the Rayleigh signal is challenging because the frequency range where Rayleigh scattering has the biggest effect is contaminated by «noise» and foregrounds, such as galactic dust,» lead author Elham Alipour said.

What if the sun happened to be brighter during the Holocene, or perhaps the Earth was passing through a galactic dust cloud, which dimmed the sun, during the Ice Age.»