Abstract: Ion heating by friction with neutral particles is known to have a significant impact on the F-region ion temperature in the presence of large electric fields, particularly when the ions become supersonic relative to the neutral background population with which they collide. However, what has not been fully characterized is the impact this heating has on ion temperature anisotropy, as well as the influence of these non-Maxwellian velocity distributions on the shape and interpretation of incoherent radar spectra. To study this, reconstructions of incoherent radar spectra made from Monte-Carlo simulations of velocity distributions are being analyzed along-side radar campaigns capable of giving insight into such things as the collision cross-section of different collisions (such as the resonant charge exchange of O+ ions with O). For this research, an experiment was devised to scrutinize the plasma along the magnetic meridian so as to extract electric field and ion temperature information at altitudes where frictional heating plays an important role. The results of this work indicate that, as expected, the line-of-sight component of the plasma drift extracted from different altitudes is consistent throughout the ionosphere above 150 km. However, owing to competition with processes such as heat exchange with electrons, neutral atmospheric uncertainties, and heat conduction from above, extracting information about the effect of frictional heating is difficult unless the electric field is very strong. Here, the first electric field and ion temperature results from these special magnetic meridian scanning modes will be shown.
Title: Space Weather: Finding Field-Aligned Currents during Substorms
Abstract: Near-Earth space is a region whose dynamics are best described by plasmas and the currents they form. To understand the chain of events that leads to space weather phenomena, the connections of the solar wind to the magnetosphere to the ionosphere by such currents need to be understood. In particular, during substorms currents are formed between the magnetosphere and the ionosphere, and a view of incoming and outgoing currents would illustrate the structure of what is called the substorm current wedge. Two scientific tools are considered to do just that in this presentation: the magnetometers aboard the Iridium satellite constellation in the AMPERE project and the radar network SuperDARN. A comparison between AMPERE and SuperDARN methods will be given, as well as the results for a superposed epoch analysis for AMPERE (SuperDARN results up-and-coming).
Our first speaker for the PEGASUS summer student seminar series is Devon Huyghebaert, whose research utilizes the ICEBEAR radar system. Please join us this Tuesday at 3:00 pm in the lounge for cookies and refreshments beforehand.
Title: The ICEBEAR Radar – Hardware and Capabilities
Abstract: Ionospheric radars will be discussed, with a focus on E-region radars and the new ICEBEAR radar.
The talk will delve into the workings of radar systems and signal processing, culminating with an introduction to the ICEBEAR radar. How are radio waves affected by plasma? What can we learn by probing a plasma hundreds of kilometers away using radio waves? What hardware is required in an advanced digital radio/radar system to transmit and receive radio signals? What does ICEBEAR stand for? These all important questions will be answered at the seminar.
There are a number of useful reference management seminars being offered through the University of Saskatchewan Library; take a look at their offerings for the remainder of the Fall 2015 semester. If you haven’t yet developed a system to manage your references, it’s a good opportunity to investigate different tools to make writing papers and citing references as easy as possible. Some upcoming workshops are listed below.
Nov. 3, 12:00 – 1:00, Murray Library, Rm. 145
Instructor: Carolyn Doi
Zotero is a freely available, open source program which allows you to easily save, organize, and cite all of your references. It is available as an extension in Mozilla Firefox or a standalone program. This session offers attendees an introduction to Zotero and how it may be used for library research.
Comprehensive Lit Review – Part B
Nov. 4, 3:30 – 4:30, Murray Library, Rm. 161
Instructor: Li Zhang
This session will describe the reasons for doing a comprehensive literature review, and will focus on designing a search strategy for databases with subject headings such as Medline, ERIC, and PsycINFO. We will briefly cover saving your search, and writing up your literature review.
Nov. 17, 12:00 – 1:00, Murray Library, Rm. 145
Instructor: Carolyn Doi
Mendeley is a free reference manager and academic social network that can help you organize your research, collaborate with others online, and discover the latest research. Automatically generate bibliographies, collaborate easily with other researchers online, easily import papers from other research software, find relevant papers based on what you’re reading, access your papers from anywhere online, read papers on the go with the iPhone app. This session offers attendees an introduction to Mendeley and how it may be used for library research.
Summer is coming, which means the PEGASUS Student Summer Seminar Series will
be starting up again.
Each summer, PEGASUS organizes a seminar series that provides an opportunity
for graduate students in the department to share their research and practice
their presentation skills in a friendly environment. The audience consists
of only graduate and undergraduate students, so the environment is far more
relaxed and informal than departmental seminars or conference sessions.
Talks are 30-45 minutes long with questions from the audience.
We have several unclaimed spots throughout the summer, so if anyone would
like to tell their fellow graduate students a bit about their research and
gain some experience speaking to a fairly friendly audience, please contact
Fred Sage at ac.ksasu.liamnull@523ssf for more information.
The seminars will take place on Tuesdays at 3:30 in Room 175, the seminar
room on the main floor. Coffee and cookies will be provided at
3:00 in the Faculty lounge. The first presentation will occur on May 12.
We hope you will come out and hear what your fellow graduate students have
The PEGASUS Executive
- PHYS 816/456
- PHYS 821/322
- PHYS 861/461
- PHYS 871/470
- PHYS 883/481
- PHYS 886/482
- PHYS 895/498
- PHYS 990
Hello fellow Pegasi! The GSA Gala is coming up (this weekend) and we hope to see you there. Here’s the info courtesy of GSA VP External:
Please Join us at the 3rd Annual Graduate Awards Gala to be held on March 7, 2015 at the Radisson Hotel-Saskatoon. It will be a night of celebrating Graduate Student Achievements, getting inspired by our Keynote Speaker Dr. Monique Haakensen and lots of fun with:
- 9 awards
- 4 graduate student performances
- A Photo Booth
- up to 20 Door Prizes
Cocktails at: 5:30 PM
Awards & Dinner at: 6:30 PM
Dance at: 10:00 PM
Ticket Price: $25
Tickets are available at the GSA Office.
Payment can be made with Cash or Debit.
For more information, please contact the GSA at 306-966-8471. For updates, please visit our Facebook page https://www.facebook.com/event
This year the PEGASUS annual general meeting (AGM) will be in March. Please accept the following invitation to the PEGASUS AGM after the seminar on Tuesday, March 3rd. 2015.
Pizza and refreshments will be served (including gluten free and vegetarian pizza). Come out, meet the executive, and discuss any concerns on your mind.
All the best,
-The PEGASUS Executive Team
What: Annual General Meeting
When: March 3rd, 2015, 5:00 pm
Where: Physics 175
Please join PEGASUS for its annual general meeting. Come out, meet the executive, and bring forth your questions, complaints, and suggestions. We look forward to having you there — every bit of input and feedback helps us better represent our members.
Pizza and refreshments will be available.
The University Learning Centre is hosting many graduate student targeted workshops in January. Be sure to check these out and register at http://www.usask.ca/ulc/
- Wednesday Jan 14th, 3:30-5:00, Style in Scientific Writing, with Professor Ron Cooley, Arts 241
- Friday Jan 16th, 12:30-1:20, Time Management for Graduate Students, 102 Murray
- Friday Jan 16th, 1:30-2:20, Poster Presentations, 102 Murray
- Friday Jan 16th, 3:30-4:20, Stress Management in Grad School, 102 Murray
- Wednesday Jan 21st, 11:30-12:20, How to Apply for a Master’s Program, G3 Murray
- Friday Jan 23rd, 1:30-2:20, Endnote, 102 Murray
- Friday Jan 23rd, 3:00-3:50, Effective Criticism, G3 Murray
- Friday Jan 23rd, 3:30-5:00, Thesis and Dissertation Proposals, with Professor Ron Cooley, Arts 241
- Wednesday Jan 28th, 1:30-2:20, Extra-curricular Winter Activities in Saskatoon, CLL Murray
- Friday Jan 30th, 2:00-2:50, Procrastination in Grad School, G3 Murray
There are also many Researcher Series sessions happening this semester. All classes are from *12:00 PM – 1:00 PM*, are free. For more information see this webpage http://libguides.usask.ca/LibraryResearcherSeries.
- Jan 20 – Why and How to Do a Comprehensive Literature Review Part A – Room 161, Murray Library
- Jan 22 – Why and How to Do a Comprehensive Literature Review Part B – Room 161, Murray Library
- Jan 27 – Citation Manager Overview: Which one is right for you? – Room 145, Murray Library
- Jan 29 – Beware of Predatory Publishers! – Room 102, Murray Library
- Feb 3 – EndNote Web – Room 161, Murray Library
- Feb 5 – Keeping Current with the Literature – Room 102, Murray Library
- Feb 10 – EndNote Desktop – Room 1430, Health Sciences Library
- Feb 12 – Searching for Grey Literature – Room 102, Murray Library
- Feb 24 – Mendeley – Room 145, Murray Library
- Feb 26 – Why and How to Do a Comprehensive Literature Review Part A – Room 161, Murray Library
- Mar 3 – Zotero – Room 145, Murray Library
- Mar 5 – Why and How to Do a Comprehensive Literature Review Part B – Room 161, Murray Library
- Mar 10 – RefWorks – Room 161, Murray Library
- Mar 12 – 10 Government Research Tips You Need to Know – Room 102, Murray Library
- Mar 17 – EndNote Overview – Room 1430, Health Sciences Library
- Mar 19 – Using the DiRT (Digital Research Tools) Directory in your Research – Room 102, Murray Library
- Mar 24 – RefWorks – Room 161, Murray Library
- Mar 26 – Research Data Management – Room 102, Murray Library
Li Zhang (Head of the Science Library) is offering a hands-on workshop on both literature search and reference management tools for Physics and Engineering Physics graduate students, with an emphasis on reference management (including LaTeX-based tools).
When: Wednesday, February 18, 2015, 10:00 am – 12:00 pm
Where: Room 161, Murray Library
Space is limited to 20 participants: if you are interested in attending please contact Debbie in the Physics and Engineering Physics Office by January 30th to reserve your place.