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Department News and Colloquium

Physics & Astronomy Colloquium at CSU Long Beach

Physics Colloquium

Signatures of Nanoflares

in the Solar Corona

Dr. Ana Cadavid

March 19, 2018
Time: 11:15 am
Refreshments will be served at 10:45 am in HSCI-224.

Although a unifying explanation for the heating of the solar corona remains elusive, observations and numerical simulations indicate the importance of impulsive energy releases. A framework is provided by the nanoflare model in which generic, small impulsive heating events occur at sub-resolution scales. Because direct observations cannot probe these physical processes, indirect analyses are needed to uncover consequences or “signatures.” After an overview of the problem of coronal heating, the observational data, and the nanoflare properties, I will present the results of an investigation of the temporal correlations and scaling characteristics of the fluctuations of extreme ultraviolet (EUV) intensity emission in different coronal regions. By using a combination of analysis methods which include multifractal detrended fluctuation analysis, I will classify the solar emissions in the context of other impulsive processes. Results are compared to those for simulated intensities from a model of impulsive bursts plus noise, and for the ohmic dissipation in a Reduced Magnetohydrodynamic model for coronal loop heating.

All Physics students & faculty should attend!

See the colloquium schedule and its archive of previous talks

Colloquia are scheduled to start Mondays at 11:15am sharp in Peterson Hall 1, Room PH1-223. 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!


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

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 and Family Endowment
  • 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!

Colloquia Schedule

Academic Year 2017-2018

Date Title Speaker and Affiliation
September 11 Physics Department Meet and Mix Faculty and Staff,
California State University, Long Beach
September 18 Constraining Planet Formation with Directly Imaged Exoplanets Prof. Quinn Konopacky,
University of California, San Diego
September 25 Neutron Stars: Challenges and Opportunities Prof. Thomas Klähn,
California State University, Long Beach
October 2 Topological Order in Condensed Matter Physics Prof. Michael R. Peterson,
California State University, Long Beach
October 9 A Paradigmatic Study of Exo-Academia Economic Opportunites in the Absence of a Physics Doctorate John Milligan,
Logical Approach Engineering
October 16 Scanning Tunneling Microscopy of Graphene: Hydrogen Desorption and Nitrogen Doping Prof. Li Gao,
California State University, Northridge
October 23 Majorana Materializes Prof. Jason Alicea,
California Institute of Technology
October 30 What is a skyrmion? Dr. Hector Ochoa,
University of California, Los Angeles
Novemeber 6 Force Sensing by Bacteria Prof. Albert Siryaporn,
University of California, Irvine
Novemeber 13 Density Functional Theory and its Applications to Physics and Chemistry Dr. Kurt Fredrickson,
Applied Materials (Sunnyvale, CA)
Novemeber 27 A Curious Supergravity Story Prof. Zvi Bern,
University of California, Los Angeles
December 4 The Next Questions in Neutrino Physics Prof. Ryan Patterson,
California Institute of Technology
January 29 Chasing the Sun Dr. David Yu,
DULY Research Inc.
February 5 Superconductivity versus Magnetism in Electron-Doped Iron Selenide Prof. Jose Rodriguez,
Department of Physics and Astronomy, CSU Los Angeles
February 12 A Brief Introduction to Rotor Dynamics Dr. Louis Komzsik,
University of California, Irvine
February 21 Cannibals in the Standard Model Craig D. Roberts,
Argonne National Laboratory, IL
February 26 The Forces that Keep Our Cells Alive Dr. Wylie Ahmed,
California State University, Fullerton
March 12 Artificial Intelligence and Quantum Many-Body Physics Ehsan Khatami,
San Jose State University
March 19 Artificial Intelligence and Quantum Many-Body Physics Dr. Ana Cadavid,
CSU Northridge