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Todd Suomela

[0806.0377] A Hemispherical Power Asymmetry from Inflation - 0 views

arxiv.org/0806.0377

astronomy astrophysics observatory physics

shared by Todd Suomela on 13 Jun 08 - Cached
  • Todd Suomela on 13 Jun 08
     
    Measurements of temperature fluctuations by the Wilkinson Microwave Anisotropy Probe (WMAP) indicate that the fluctuation amplitude in one half of the sky differs from the amplitude in the other half. We show that such an asymmetry cannot be generated during single-field slow-roll inflation without violating constraints to the homogeneity of the Universe. In contrast, a multi-field inflationary theory, the curvaton model, can produce this power asymmetry without violating the homogeneity constraint. The mechanism requires the introduction of a large-amplitude superhorizon perturbation to the curvaton field, possibly a pre-inflationary remnant or a superhorizon curvaton-web structure. The model makes several predictions, including non-Gaussianity and modifications to the inflationary consistency relation, that will be tested with forthcoming CMB experiments.
Sandra Flores

Surface and core of the Earth in its sights - 0 views

Surface and core of the Earth in its sightsOn September 10, the Russian Plesetsk cosmodrome to be brought from the ESA GOCE satellite into orbit to determine the gravitational field and the referen...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Surface and core of the Earth in its sights - 0 views

Surface and core of the Earth in its sightsOn September 10, the Russian Plesetsk cosmodrome to be brought from the ESA GOCE satellite into orbit to determine the gravitational field and the referen...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Astro Biology

Earth's magnetic field has flipped - 0 views

www.astrobio.net/...eld-flip-within-human-lifetime

news from nasa solar system planets in our

shared by Astro Biology on 20 Oct 14 - No Cached
  • Astro Biology on 20 Oct 14
     
    The new discovery indicates that the intensity of Earth's magnetic field is decreasing 10 times faster, leading some geophysicists to predict a reversal within a few thousand years.
  • Astro Biology on 20 Oct 14
     
    The new discovery indicates that the intensity of Earth's magnetic field is decreasing 10 times faster, leading some geophysicists to predict a reversal within a few thousand years.
Sandra Flores

The origin of 'soft' gamma radiation - 0 views

image

started by Sandra Flores on 09 Jan 15 no follow-up yet
Janos Haits

Virtual Solar Terrestrial Observatory VSTO Home - 0 views

www.vsto.org

Astronomy science space solar universe physics cosmology Astrophysics

shared by Janos Haits on 12 Feb 12 - Cached
  • Janos Haits on 12 Feb 12
     
    The Virtual Solar Terrestrial Observatory (VSTO) is a unified semantic environment serving data from diverse data archives in the fields of solar, solar-terrestrial, and space physics (SSTSP), currently:
Kalyan Roy

Hubble Unveils Stunning Star Birth in M83 | Universe Today - 1 views

www.universetoday.com/...ils-stunning-star-birth-in-m83

Astronomy

shared by Kalyan Roy on 06 Nov 09 - Cached
  • Kalyan Roy on 06 Nov 09
     
    It appears Hubble's new Wide Field Camera 3 (WFC3) is working. And how! The new camera installed during Servicing Mission 4 in May has delivered the most
Janos Haits

Encyclopedia of Astronomy and Astrophysics - 1 views

eaa.crcpress.com

encyclopedia universe planetary Astrophysics physics cosmology astronomy science galactic space

shared by Janos Haits on 23 Feb 11 - Cached
  • Janos Haits on 23 Feb 11
     
    This unique resource covers the entire field of astronomy and astrophysics and this online version includes the full text of over 2,750 articles, plus sophisticated search and retrieval functionality, links to the primary literature, and is frequently updated with new material. An active editorial team, headed by the Encyclopedia's editor-in-chief, Paul Murdin, oversees the continual commissioning, reviewing and loading of new and revised content.
Janos Haits

Exoplanet Exploration: Planets Beyond our Solar System - 2 views

exoplanets.nasa.gov

exploration planets solar system system nasa science education research technology Space universe planetary galactic cosmology exoplanets planet extrasolar astronomie astronomy solar

shared by Janos Haits on 23 Feb 17 - Cached
  • Janos Haits on 23 Feb 17
     
    'The Exoplanet Exploration Program (ExEP) is responsible for implementing NASA's plans for the discovery and understanding of planetary systems around nearby stars. ExEP plays an important function in exoplanet research, by laying out a long-term view of the entire field and charting out a strategic timeline of missions and instruments."
Sandra Flores

Fifth ATV's Georges Lemaître - 1 views

The fifth and final current proposed Automated Transfer Vehicle (ATV) of the European Space Agency will carry the name "Georges Lemaître". The Belgian theologian and astrophysicists is considered t...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

How can I shorten my Astro-Studies ? - 0 views

Do you have to study really five years physics to make astronomy or you can also directly available to study astronomy and astrophysics? Is it true that the lectures are in English?As a rule, no di...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Doctorat in Astronomy ? - 0 views

I would love to do a doctorate in astronomy. What are the chances to find accommodation for a doctoral thesis in the private sector?The positions at universities and research institutions in the fi...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Doctorat in Astronomy ? - 0 views

I would love to do a doctorate in astronomy. What are the chances to find accommodation for a doctoral thesis in the private sector?The positions at universities and research institutions in the fi...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Sandra Flores

How can I shorten my Astro-Studies ? - 0 views

Do you have to study really five years physics to make astronomy or you can also directly available to study astronomy and astrophysics? Is it true that the lectures are in English?As a rule, no di...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Janos Haits

Mars by Kenneth Field - 0 views

carto.maps.arcgis.com/...index.html

mars map ASTRONOMY Space universe science galactic cosmology solar application planetary

shared by Janos Haits on 21 May 19 - No Cached
  • Janos Haits on 21 May 19
     
    planet mars
Sergio Perez

SFT_preprint-EN_2_col.pdf - 0 views

Unified field theory Quantum gravity vacuum Strong nuclear force Dark matter energy

shared by Sergio Perez on 29 Jan 24 - No Cached
  • Sergio Perez on 29 Jan 24
     
    Unification theory with no extra dimensions. The first part unifies the strong nuclear force with the gravitational force in a mathematical way; the quantum vacuum is treated as a deformable system by the strong nuclear force. The second part unifies the nuclear force with the quantum vacuum in a hypothetical structure; the quantum vacuum is treated as a supersymmetric and metastable system with properties related to the different types of particles' motion.
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