Sentences with phrase «by 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.

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

Not exact matches

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.

Other effects, such as light scattering from cosmic dust and the synchrotron radiation generated by electrons moving around galactic magnetic fields within our own galaxy, can also produce these polarisation twists.

In addition, everything behind the galactic centre is shrouded by a dense wall of stars and dust, blanking out a whole area of the Milky Way map.

He is a specialist on active galactic nuclei, superbright galactic cores thought to be caused by giant black holes sucking in and heating up quantities of gas and dust.

But after the black hole settles down, Bluck says, conditions would be far more hospitable; no new stars would form and disrupt the galactic neighborhood by churning up gas and dust and emitting their own radiation.

The three concluded that there was a strong possibility that the signal could have been generated by cosmic dust in the galactic foreground rather than by gravitational waves.

Averaging over some 350 high - galactic - latitude patches of sky similar in size to the region observed by BICEP2, Puget reported that polarization from interstellar dust grains plays a significant role and might account for much of the BICEP2 signal that had been attributed to inflation - generated gravitational waves.

The most likely explanations involve radiation or outflows from an active galactic nucleus (AGN) that is strongly obscured by dust so that only a faint source can be seen associated with the nebula.

Many active galactic nuclei are surrounded by large, dark, donut - shaped clouds of gas and dust, as seen in this artist's rendering.

«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.

It is likely that the polarization arises because the dust grains are partially aligned by the galactic magnetic field.

Detection of the spiral's dust in a bi-symmetric structure provides strong evidence of its position deep inside the giant elliptical host while the vast amounts of radio, visual, and x-ray emissions are a result of the energy released by this continuing galactic merger (or «consumption» of a satellite galaxy).

SDSS studies have probed the dark matter environments of quasars through clustering measurements, revealed populations of quasars whose central engines are hidden by obscuring dust, captured changes in quasar spectra that show clouds moving in the gravitational grip of the central black hole, and allowed a comprehensive census of the much fainter accreting black holes (active galactic nuclei, or AGN) in present - day galaxies.

We are treated to thundering galactic fight sequences, accompanied by Wagnerian music, and some eerie scenes in which characters appear to turn to dust in front of our eyes.