Skip to Local Navigation
Skip to Content
California State University, Long Beach
Print this pageAdd this page to your favoritesSelect a font sizeSelect a small fontSelect a medium fontSelect a large font
 
Department News and Colloquium

Physics & Astronomy Colloquium at CSU Long Beach

Colloquium

Probing the Interior of Neutron Stars through Non-radial Oscillations

Prashanth Jaikumar
Dept. of Physics & Astronomy, CSU Long Beach

Monday, October 27, 2014
11:15am, HSCI-103
(Refreshments served at 10:45am in HSCI-224)


Fig: Figure: Periods of the fundamental l=2 p and g-modes and their overtones in a polytropic model of neutron stars. ν is the index of the polytrope.

Neutron stars are expected to support different kinds of fluid oscillation modes depending on the state of matter inside. Such oscillations have been connected to restoring forces (from the spectrum) and relaxation mechanisms (from the amplitude) that span different scales in the neutron star, from global modes to local torsional modes confined to the crust. In each case, the aim is to relate the amplitude and spectrum of these modes to the structure and composition of the neutron star. We present results from a series of studies of the r-mode, an axial mode that is intimately connected to gravitational waves, and show how it probes the equation of state. We examine the possibility of having deconfined quark matter inside neutron stars from the perspective of the r-mode. Finally, we will discuss some promising directions for research in this area, focusing on the possibility of using p-modes and g-modes to further discriminate between nucleonic and quark phases.

See the colloquium schedule and its archive of previous talks

Colloquia are scheduled to start Mondays at 11:15am sharp in Peterson Hall 2, Room 110 (PH2-110, map). Refreshments are served from 10:45am to 11:05am in Room HSCI-224 (next to the department office) and everyone is invited to mingle with faculty and students!

Coordinator:

For information and suggestions about the colloquium please contact the colloquium coordinator:
Prof. Prashanth Jaikumar, Phone: 562-985-5592, Email: pjaikuma@csulb.edu

Directions to Campus

  • Access to Campus
  • Campus Maps
  • Parking on campus: contact the coordinator of the colloquium. If not reachable, call the department office (562) 985-7925. If none of these are available at the time you need information, call (562) 985-4146 or go to the drive-through information booth at the main campus entrance (on Beach Drive, near the crossing to Bellflower).
  • Walk (or ask for a ride on an on-campus shuttle) to the department office: Hall of Sciences, Room 220 (HSCI-220). The coordinator will provide the necessary informations.
  • Any question or problem: call the colloquium coordinator or the department office (562) 985-7925.

Colloquia Sponsors:

We acknowledge with gratitude donations and support from the following present sponsors:

  • H.E. and H.B. Miller
  • Benjamin Carter
  • The American Physical Society
  • Anonymous

We also acknowledge with gratitude our past donors: The Forty-Niner Shops, Inc., The Northrop Grumman Foundation, Sandra Dana, Anonymous.

If you wish to support the Colloquium, please contact the colloquium coordinator or the department chair. Thank you!

Academic Year 2014-2015

Date Title Speaker and Affiliation
June 2 Development of Micro-Devices for Intra-Cellular Recordings in Awake Active Brains M. Barbic, HHMI
September 8 Physics Deparment Meet & Mix Faculty and
Students
September 15 Density Functional Theory: A great physics success story Kieron Burke, UC Irvine
September 22 BME/Medical Physics; Assisted management of cardiopulmonary diseases Christopher Druzgalski, CSULB
September 29 Radiationless Decay Studied by Time- Dependent Density Functional Theory Enrico Tapavicza, CSULB
October 6 Electronic correlations in multi-orbital systems and iron based superconductors Elena Bascones: ICMM, CSIC
October 13 Searches for Particle Dark Matter Tim Tait, UCI
October 20 Theoretical Approaches towards HIV Vaccine Designs and Prevention Efforts Ha Youn Lee, USC
October 27 Simulation and spectroscopy of many-body systems with cold atoms and molecules Wes Campbell, UCLA
November 3 Probing the Interior of Neutron Stars through Non-radial Oscillations Prashanth Jaikumar, CSULB
November 10
November 17
November 24
December 1
December 8
December 10

Colloquia Schedule