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Search results in Astrophysics from PIRSA

1609 - 1620 of 2233 Results

Observable consequences of small field models of inflation

Ramy Brustein Ben-Gurion University of the Negev
October 06, 2009

PIRSA:09100102
High Energy Physics

Astrophysics
Meet a Scientist - Dr. Olivier Dore

Olivier Dore National Aeronautics and Space Administration
October 05, 2009

PIRSA:09100188
Astrophysics
Meet a Scientist - Dr. Ghazal Geshnizjani

Ghazal Geshnizjani Perimeter Institute for Theoretical Physics
October 05, 2009

PIRSA:09100193
Astrophysics
Meet a Scientist - Chanda Prescod-Weinstein

Chanda Prescod-Weinstein University of New Hampshire
October 05, 2009

PIRSA:09100185
General Relativity & Quantum Cosmology

Astrophysics
Meet a Scientist - Prof. Robert Brandenberger

Robert Brandenberger McGill University - Department of Physics
October 05, 2009

PIRSA:09100197
Astrophysics
Meet a Scientist - Prof. Neta A. Bahcall

Neta Bahcall Princeton University
October 05, 2009

PIRSA:09100189
Astrophysics
Meet a Scientist - Dr. Jean-Luc Lehners

Jean-Luc Lehners Self Employed
October 05, 2009

PIRSA:09100186
High Energy Physics

Astrophysics
Meet a Scientist - Prof. Neal Weiner

Neal Weiner New York University (NYU)
October 05, 2009

PIRSA:09100187
High Energy Physics

Astrophysics
Meet a Scientist - Prof. Alessandra Buonanno

Alessandra Buonanno Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
October 05, 2009

PIRSA:09050097
Astrophysics
Meet a Scientist - Prof. Andreas Albrecht

Andreas Albrecht University of California, Davis
October 05, 2009

PIRSA:09100190
Astrophysics
Brane interactions: the origin of space-time dimensionality and the physics of cosmic superstrings

Mairi Sakellariadou King's College London
September 30, 2009

PIRSA:09090000
General Relativity & Quantum Cosmology

Astrophysics
Noncomutative Effects in Primordial Density Fluctuations

Babar Qureshi Lahore University of Management Sciences
September 29, 2009

PIRSA:09090102
Astrophysics

Observable consequences of small field models of inflation

Ramy Brustein Ben-Gurion University of the Negev
October 06, 2009

PIRSA:09100102
High Energy Physics

Astrophysics
TBA
Meet a Scientist - Dr. Olivier Dore

Olivier Dore National Aeronautics and Space Administration
October 05, 2009

PIRSA:09100188
Astrophysics
The origin and evolution of the largest observable structures in the universe (much larger than entire galaxies); understanding why the expansion of the universe is accelerating. Observational techniques: cosmic microwave background, gravitational lensing and gravity waves.
Meet a Scientist - Dr. Ghazal Geshnizjani

Ghazal Geshnizjani Perimeter Institute for Theoretical Physics
October 05, 2009

PIRSA:09100193
Astrophysics
String- and M-theory inspired scenarios for the cosmology of the early universe. Replacing the unphysical Big Bang-like beginning of our universe with bouncing scenarios of accelerated expansion followed by familiar evolution.
Meet a Scientist - Chanda Prescod-Weinstein

Chanda Prescod-Weinstein University of New Hampshire
October 05, 2009

PIRSA:09100185
General Relativity & Quantum Cosmology

Astrophysics
Cosmology and cosmological implications of quantum gravity. Observable effects in cosmology help to identify the limits of general relativity, which could potentially be surpassed by modified theories of gravity and/or quantum gravity.
Meet a Scientist - Prof. Robert Brandenberger

Robert Brandenberger McGill University - Department of Physics
October 05, 2009

PIRSA:09100197
Astrophysics
Cosmology as a natural meeting ground for fundamental theory (e.g. superstring theory or quantum gravity) and observations. Exploring how seeds laid down in the very early universe developed into the large scale structure we observe in the universe today.
Meet a Scientist - Prof. Neta A. Bahcall

Neta Bahcall Princeton University
October 05, 2009

PIRSA:09100189
Astrophysics
Observational cosmology, with particular focus on the formation and evolution of large scale structures in our universe like clusters of galaxies as large as 500 million light years. “Weighing” the universe, and mapping out the mysterious dark matter it contains.
Meet a Scientist - Dr. Jean-Luc Lehners

Jean-Luc Lehners Self Employed
October 05, 2009

PIRSA:09100186
High Energy Physics

Astrophysics
What, exactly, happened around the time of the Big Bang? Exploring new models inspired by superstring theory and supergravity, e.g. ones in which we live on “branes” that collide with a “big bang”. Satellite experiments to test such models.
Meet a Scientist - Prof. Neal Weiner

Neal Weiner New York University (NYU)
October 05, 2009

PIRSA:09100187
High Energy Physics

Astrophysics
Physics beyond the standard model: theories of elementary particles with extra space dimensions (large, small, warped and flat); supersymmetry; grand unification; dark matter; inflation and dark energy; as well as relationships between the different subjects.
Meet a Scientist - Prof. Alessandra Buonanno

Alessandra Buonanno Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI)
October 05, 2009

PIRSA:09050097
Astrophysics
Cosmology of the early universe; theory and detection of gravitational waves, e.g. from the violent last stages of inspiral as two orbiting black holes coalesce. Using cutting edge quantum physics in designing practical, ultra sensitive gravitational wave detectors.
Meet a Scientist - Prof. Andreas Albrecht

Andreas Albrecht University of California, Davis
October 05, 2009

PIRSA:09100190
Astrophysics
Implications of high-energy elementary particle physics for physics of the early universe and its evolution (Big Bang, creation of matter, formation of galaxies, etc). And vice-versa: implications of observable cosmological data for fundamental physics.
Brane interactions: the origin of space-time dimensionality and the physics of cosmic superstrings

Mairi Sakellariadou King's College London
September 30, 2009

PIRSA:09090000
General Relativity & Quantum Cosmology

Astrophysics
Collisions and subsequent decays of higher dimensional branes leave behind three-dimensional branes, one of which could play the role of our universe. This process also leads to the production of one-dimensional branes, D-strings, and fundamental ones (F-strings), known as cosmic superstrings. In the first part of this talk, I will discuss the mechanism we have proposed in order to explain the origin of the space-time dimensionality, while in the second part I will review formation and dynamics of cosmic superstrings.
Noncomutative Effects in Primordial Density Fluctuations

Babar Qureshi Lahore University of Management Sciences
September 29, 2009

PIRSA:09090102
Astrophysics
Near the Planckian scales, quantum gravity is expected to drastically change the structure of spacetime, one feature of which may be noncomutativity of the coordinates. Based on the recent advances in quantum field theories on such noncommutative spaces, I will consider the fluctuations of inflaton and look for possible noncommutative corrections in the CMB. Anisotropy and non-gaussianity are the result. The resultant distribution is then compared with ACBAR, CBI and WMAP data to constrain the scale of noncommutativity parameter.

Title	Date	Collection	Type	Info
Observable consequences of small field models of inflation	2009‑10‑06	Cosmology and Gravitation	Scientific Series	View details
Meet a Scientist - Dr. Olivier Dore	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Dr. Ghazal Geshnizjani	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Chanda Prescod-Weinstein	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Prof. Robert Brandenberger	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Prof. Neta A. Bahcall	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Dr. Jean-Luc Lehners	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Prof. Neal Weiner	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Prof. Alessandra Buonanno	2009‑10‑05	Meet a Scientist		View details
Meet a Scientist - Prof. Andreas Albrecht	2009‑10‑05	Meet a Scientist		View details
Brane interactions: the origin of space-time dimensionality and the physics of cosmic superstrings	2009‑09‑30	PIAF 09' New Perspectives on the Quantum State	Scientific Series	View details
Noncomutative Effects in Primordial Density Fluctuations	2009‑09‑29	Cosmology and Gravitation	Scientific Series	View details

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Observable consequences of small field models of inflation

Meet a Scientist - Dr. Olivier Dore

Meet a Scientist - Dr. Ghazal Geshnizjani

Meet a Scientist - Chanda Prescod-Weinstein

Meet a Scientist - Prof. Robert Brandenberger

Meet a Scientist - Prof. Neta A. Bahcall

Meet a Scientist - Dr. Jean-Luc Lehners

Meet a Scientist - Prof. Neal Weiner

Meet a Scientist - Prof. Alessandra Buonanno

Meet a Scientist - Prof. Andreas Albrecht

Brane interactions: the origin of space-time dimensionality and the physics of cosmic superstrings

Noncomutative Effects in Primordial Density Fluctuations

Observable consequences of small field models of inflation

Meet a Scientist - Dr. Olivier Dore

Meet a Scientist - Dr. Ghazal Geshnizjani

Meet a Scientist - Chanda Prescod-Weinstein

Meet a Scientist - Prof. Robert Brandenberger

Meet a Scientist - Prof. Neta A. Bahcall

Meet a Scientist - Dr. Jean-Luc Lehners

Meet a Scientist - Prof. Neal Weiner

Meet a Scientist - Prof. Alessandra Buonanno

Meet a Scientist - Prof. Andreas Albrecht

Brane interactions: the origin of space-time dimensionality and the physics of cosmic superstrings

Noncomutative Effects in Primordial Density Fluctuations