External Seminars

The Origin of Exozodiacal Dust

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Amy Bonsor
• Wednesday 10 April 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Structure of the inner Milky Way through its red population

As the effect of interstellar extinction in the infrared, using bright red sources it is possible to penetrate the inner disc of the Galaxy. Red clump giants and red supergiants are two particularly useful populations to this aim, as they are bright on the NIR and while the former are dynamically relaxed, the latter trace very recent and massive stellar formation. In this talk I show how, using these stars, we can look for the traces of large structures such as the bar of the Milky Way.

• Part of Institute of Astronomy Seminars
• Speaker: Carlos Gonzalez (Alicante -> IoA)
• Wednesday 10 April 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Anthony Challinor (IoA)
• Wednesday 17 April 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

High Field Magnetic White Dwarfs Simulated in the Laboratory

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Paul Murdin (IoA)
• Wednesday 17 April 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

TBA

Abstract not available

• Part of Institute of Astronomy Galaxies Discussion Group
• Speaker: Rob Kennicutt (IoA)
• Friday 19 April 2013, 11:30-12:30
• Kavli LMR, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: CASU Folks
• Wednesday 24 April 2013, 13:15-14:15
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: [Reserved by IoA]
• Thursday 25 April 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Effective constitutive relations and variational principles for waves in composites

Abstract not available

This talk is in MR9, CMS

• Part of Fluid Mechanics (DAMTP)
• Speaker: John Willis (Damtp)
• Friday 26 April 2013, 16:00-17:00
• MR9, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Evolution of infalling group and cluster galaxies

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Yannick Bahe (IoA)
• Wednesday 01 May 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Anna Hourihane (IoA)
• Wednesday 01 May 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Detecting Gravitational Waves (and doing other cool physics) with Millisecond Pulsars

The first millisecond pulsar was discovered in 1982. Since that time their use as highly-accurate celestial clocks has improved continually, so that they are now regularly used to measure a variety of general relativistic effects and probe a variety of topics in basic physics, such as the equation of state of matter at supra-nuclear densities. One of their most exciting uses though, is the current North American (NANOGrav) and international (the International Pulsar Timing Array) efforts to directly detect nanohertz frequency gravitational waves, most likely originating from the ensemble of supermassive black hole binaries scattered throughout the universe. In this talk I’ll describe how we are using an ensemble of pulsars to try to make such a measurement, how we could make a detection within the next 5-10 years, and how we get a wide variety of very interesting secondary science from the pulsars in the meantime.

• Part of Institute of Astronomy Colloquia
• Speaker: Scott Ransom (NRAO)
• Thursday 02 May 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Galaxy formation on a moving mesh

Abstract not available

• Part of Institute of Astronomy Galaxies Discussion Group
• Speaker: Debora Sijacki (IoA)
• Friday 03 May 2013, 11:30-12:30
• Kavli LMR, IoA.

Title to be confirmed

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Peter Davidson (Engineering, Cambridge)
• Friday 03 May 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Steven Gratton (IoA/KICC)
• Wednesday 08 May 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Jonathan Gair (IoA)
• Wednesday 08 May 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

X-raying Galaxy Ecosystems

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Daniel Wang (UMass)
• Thursday 09 May 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Cytoplasmic streaming from microfilament self-organisation

Many plant cells exhibit large-scale active circulation of their entire fluid contents, a process termed cytoplasmic streaming. The driving mechanism is known: myosin-coated organelles entrain cytoplasm as they process along actin filament bundles fixed at the periphery. Still unknown, however, is the developmental process which constructs the well-ordered actin configurations required for coherent cell-scale flow. Experiments on streaming regeneration in Characean algal cells, whose longitudinal flow is perhaps the most regimented of all, suggest that microfilament self-organization is at work. We propose a robust model of streaming emergence that combines motor dynamics with both micro- and macroscopic hydrodynamics to explain how several independent processes, each ineffectual on its own, can reinforce to ultimately develop the patterns of streaming observed in the Characeae and other streaming species.

• Part of Fluid Mechanics (DAMTP)
• Speaker: Francis Woodhouse (Damtp)
• Friday 10 May 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Tiago Costa (IoA)
• Wednesday 15 May 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Merging Galactic, Stellar, and Planetary Dynamics

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Dimitri Veras (IoA)
• Wednesday 15 May 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Cosmology on a Moving Mesh

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Lars Hernquist (CfA)
• Thursday 16 May 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Cold dark matter: cusps and cores

Abstract not available

• Part of Institute of Astronomy Galaxies Discussion Group
• Speaker: Andrew Pontzen (Oxford)
• Friday 17 May 2013, 11:30-12:30
• Kavli LMR, IoA.

Title to be confirmed

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Roiy Sayag (Damtp)
• Friday 17 May 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Karin Lind (MPA -> IoA)
• Wednesday 22 May 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Thomas de Boer (Kapteyn -> IoA)
• Wednesday 22 May 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

New Ideas on Mechanisms of Angular Momentum Transport and Variability in Boundary Layers of Accretion Disks

Disk accretion onto a weakly magnetized central object, e.g. a white dwarf or a neutron star, is inevitably accompanied by the formation of a boundary layer near the surface, in which matter slows down from the highly supersonic orbital velocity of the disk to the rotational velocity of the star. Here I will describe a novel, robust mechanism of the angular momentum transport inside the astrophysical boundary layers. Using high resolution 2D and 3D hydrodynamical simulations in the equatorial plane of a boundary layer we generically find that the supersonic shear in the boundary layer excites non-axisymmetric quasi-stationary acoustic modes that are trapped between the surface of the star and a Lindblad resonance in the disk. These modes rotate in a prograde fashion, are stable for hundreds of orbital periods, and have a pattern speed that is less than and of order the rotational velocity at the inner edge of the disk. Dissipation of acoustic modes in weak shocks provides a universal mechanism for angular momentum and mass transport even in purely hydrodynamic (i.e. non-magnetized) boundary layers. Periodicity of these trapped modes may be relevant for explaining the variability seen in accreting compact objects.

• Part of Institute of Astronomy Colloquia
• Speaker: Roman Rafikov (Princeton)
• Thursday 23 May 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Simulations of damped Lyman-alpha systems

Abstract not available

• Part of Institute of Astronomy Galaxies Discussion Group
• Speaker: Simeon Bird
• Friday 24 May 2013, 11:30-12:30
• Kavli LMR, IoA.

DAMTP Second Year PhD talks

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Speaker to be confirmed
• Friday 24 May 2013, 14:00-17:40
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Matt Young (IoA)
• Wednesday 29 May 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Poul Alexander (IoA)
• Wednesday 29 May 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Astrophysics and Cosmology with Galaxy Clusters: the Role of Simulations

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Stefano Borgani (INAF Trieste)
• Thursday 30 May 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Erik Lindborg (KTH)
• Friday 31 May 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Suzie Alaghband-Zadeh (IoA)
• Wednesday 05 June 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Greg Madsen (Sydney -> IoA)
• Wednesday 05 June 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

The Formation Modes of z > 1 Galaxies and their Cosmological Implications

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Christopher Conselice (Nottingham)
• Thursday 06 June 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

New solutions of Laplace Tidal Equations over a sphere

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Nathan Paldor (The Hebrew University, Jerusalem)
• Friday 07 June 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: JD Diaz (IoA)
• Wednesday 12 June 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Iulia Simion (IoA)
• Wednesday 12 June 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

16th Cambridge/Oxford Applied Mathematics Meeting

Abstract not available

aka the Woolly Owl competition

• Part of Fluid Mechanics (DAMTP)
• Speaker: Speaker to be confirmed
• Thursday 13 June 2013, 10:45-17:35
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

Small Stars in Large Surveys - Large Surveys for Small Stars

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Boris Gänsicke (Warwick)
• Thursday 13 June 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Forming massive seed black holes by direct collapse

Abstract not available

• Part of Institute of Astronomy Galaxies Discussion Group
• Speaker: John Regan (IoA)
• Friday 14 June 2013, 11:30-12:30
• Kavli LMR, IoA.

The fluid mechanics wave-particle duality

Abstract not available

• Part of Fluid Mechanics (DAMTP)
• Speaker: Emmanuel Fort (Langevin Institute, ESPCI, Paris)
• Friday 14 June 2013, 16:00-17:00
• MR2, Centre for Mathematical Sciences, Wilberforce Road, Cambridge.

The stellar IMF and the earliest phase of the assembly of the Milky Way

The shape of the canonical IMF is briefly reviewed. Using the present day stellar populations in globular clusters as a constraint on their birth configurations these may be compared to observational data on star forming regions. Correlations appear, e.g. between the radius and the shape of the IMF versus the mass of the embedded cluster. Rather remarkable information is unearthed on the very earliest events that shaped the birth of the Milky Way galaxy.

• Part of Institute of Astronomy Seminars
• Speaker: Pavel Kroupa (Bonn)
• Wednesday 19 June 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Rob Nugent (Melbourne)
• Wednesday 19 June 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Stefan Kautsch (NSU)
• Wednesday 26 June 2013, 13:15-13:45
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Seminars
• Speaker: Ian Parry (IoA)
• Wednesday 26 June 2013, 13:45-14:15
• Sackler Lecture Theatre, IoA.

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Enrico Ramirez-Ruiz (UCSC)
• Thursday 03 October 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

The Origin of Spirals in Galaxies

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Jerry Sellwood (Rutgers)
• Thursday 10 October 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Tom Theuns (Durham)
• Thursday 17 October 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Speaker to be confirmed
• Thursday 24 October 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

Sackler Lecture 2013

• Part of The Sackler Lectures
• Speaker: Stefan Gillessen (MPE)
• Thursday 31 October 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4.00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Speaker to be confirmed
• Thursday 07 November 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: James Dunlop (Edinburgh)
• Thursday 14 November 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Rosalba Perna (Colorado)
• Thursday 21 November 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Speaker to be confirmed
• Thursday 28 November 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).

Title to be confirmed

Abstract not available

• Part of Institute of Astronomy Colloquia
• Speaker: Speaker to be confirmed
• Thursday 05 December 2013, 16:30-17:30
• Sackler Lecture Theatre, IoA (tea at 4:00 pm).