Magnetosphere Seminars

Below is a schedule of the informal LASP Friends of the Magnetosphere (FOM) Seminars for the Fall 2017 semester. LASP holds a series of informal seminars focused on space physics and plasma research relating to the magnetospheres of Earth and other planets. The intended audience is space and planetary physics researchers in the Boulder area, although in most instances any interested persons are welcome to attend. For more information or if you have questions, please contact David.Malaspina at lasp.colorado.edu.

View the Address and Directions page for detailed directions to any of the LASP locations.

Current Schedule:

Tuesday, Nov 21, 2017

Current Schedule (expanded):

December
Dec
12

* Fall AGU in New Orleans * (no seminar)

Speaker:  
Date & Time:  Tuesday, Dec 12, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

None

December
Dec
5

AGU Practice Talks / Posters

Speaker:  Various
Date & Time:  Tuesday, Dec 05, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

Bring your AGU talks / posters to practice presenting and get feedback from the group.    

November
Nov
28

Interpreting dust impact signals detected by antenna instruments

Speaker:  Libor Nouzak (Charles University, Prague)
Date & Time:  Tuesday, Nov 28, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

Dust impact events have been registered by antenna instrument in space for decades, yet there is still no comprehensive understanding of the processes that couple transient dust impact plasmas to antennas to generate measurable signals. Here I will present the most recent results from an ongoing laboratory investigation of dust impacts on the scaled-down model… Read more »

November
Nov
21

* Fall Break * (no seminar)

Speaker:  
Date & Time:  Tuesday, Nov 21, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

None

November
Nov
14

MMS Science (particles)

Speaker:  Trevor Leonard (LASP)
Date & Time:  Tuesday, Nov 14, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

TBD

November
Nov
7

MMS Science (fields)

Speaker:  Narges Ahmadi (LASP)
Date & Time:  Tuesday, Nov 07, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

TBD

October
Oct
31

50th anniversary of L-star and pseudo-trapping

Speaker:  Juan Roederer
Date & Time:  Tuesday, Oct 31, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

The adiabatic theory for the description of the dynamics of magnetically trapped charged particles was developed by Northrup and Teller in the 1950s. The main focus of my talk will be on the application of adiabatic theory to quantitative studies of planetary radiation belts, emphasizing some fundamental (and often forgotten) facts concerning intervening concepts, as… Read more »

October
Oct
24

Mars has also a dust plume

Speaker:  Laila Andersson (LASP)
Date & Time:  Tuesday, Oct 24, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

For many decades the search for a dust ring at Mars has been theorized and observations been preformed. With the arrival of the MAVEN mission dust was observed but no traces of a dust ring. Due to the vast changes in plasma conditions the spacecraft is encounter and interpreting the signals is difficult. Therefore, using… Read more »

October
Oct
17

Learning plasmaspheric dynamics using neural-network-based empirical models

Speaker:  Xiangning Chu (UCLA)
Date & Time:  Tuesday, Oct 17, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

The plasmasphere, a region of cold dense plasma in the inner magnetosphere, is constantly in a dynamic state with erosion and refilling occurring during geomagnetic storms. The plasmaspheric dynamics are important in understanding radiation belt physics. However, its global dynamics are difficult to investigate with in-situ measurements due to sparse satellites coverage. In this presentation,… Read more »

October
Oct
10

Investigating Magnetospheric Whistler Mode Dynamics with Ground based Observations

Speaker:  Poorya Hosseini (CU Denver)
Date & Time:  Tuesday, Oct 10, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

The Earth’s magnetosphere hosts a large number of wave modes, which interact with high energy particles of the Earth’s radiation belts. One of the most dominant players is believed to be magnetospheric whistler mode waves. Chorus and hiss emissions are among two of the most intense naturally occurring whistler mode waves in this region. The… Read more »

October
Oct
3

Electron Temperatures in the Martian Ionosphere: Daytime at Low-Latitudes

Speaker:  Marcin Pilinski (LASP)
Date & Time:  Tuesday, Oct 03, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

After almost three years of operations, the MAVEN mission has sampled almost the entire equatorial ionosphere region of Mars.  This has enabled the study of ion and neutral distributions as well as electron temperatures and densities along with their response to EUV forcing.  Recent results based on Langmuir Probe data related to the daytime electron… Read more »

September
Sep
26

Mars Crustal Magnetic Fields and Large-Scale Dayside Ionospheric Anomaly

Speaker:  Xiaohua Fang (LASP)
Date & Time:  Tuesday, Sep 26, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

Today’s Mars has no intrinsic dipole magnetic field but locally concentrated magnetic anomalies in the crust particularly in the southern hemisphere. It has been found by previous satellite observations that the Martian plasma density on the dayside tends to be enhanced in regions of relatively strong crustal fields. However, due to insufficient coverage of these… Read more »

September
Sep
19

** Cancelled ** Magnetospheric Whistler Mode Chorus Waves

Speaker:  Oleksiy Agapitov (UC Berkeley)
Date & Time:  Tuesday, Sep 19, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

Seminar cancelled by speaker

September
Sep
12

What can we learn from Van Allen Probe measurements of the electric drift in the inner magnetosphere?

Speaker:  Solene Lejosne (UC Berkeley)
Date & Time:  Tuesday, Sep 12, 2017 ,  3:30
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

Electric fields are notoriously difficult to measure, particularly close to Earth. The Van Allen Probe mission offers new visibility in a unique database of electric drift measurements over many years. Its onboard instruments are indeed the first to be accurate enough to measure the electric drift around the magnetic equator, even below 3 Earth radii…. Read more »

September
Sep
11

*Special Seminar* The Nightside Ionosphere of Mars: New Insights from the MAVEN Mission

Speaker:  Zach Girazian (GSFC)
Date & Time:  Monday, Sep 11, 2017 ,  3:00 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

The Mars Atmosphere and Volatile Evolution mission (MAVEN) is providing the first comprehensive plasma measurements of the nightside ionosphere of Mars. This presentation will focus on measurements from MAVEN’s Neutral Gas and Ion Mass Spectrometer (NGIMS), which have revealed the ion composition of Mars’ nightside ionosphere for the first time. I will show how electron… Read more »

September
Sep
5

Voyager Explorations of Space Physics across the Heliosphere

Speaker:  Fran Bagenal (LASP)
Date & Time:  Tuesday, Sep 05, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

To celebrate the 40th anniversaries of the launches of the Voyager spacecraft I will review the space physics measurements made by instruments (MAG, PLS, PWS, LECP, CRS) on the two spacecraft as they passed Jupiter, Saturn, Uranus and Neptune as well as on their long, long journey from 1 to 140 AU. Given the tall… Read more »

August
Aug
29

Magnetospheric Multiscale Observations of Parallel Electric Fields Associated With Magnetic Reconnection

Speaker:  Rick Wilder (LASP)
Date & Time:  Tuesday, Aug 29, 2017 ,  3:30 PM
Location:  LASP Space Science Building, room N100 (1st floor)
Abstract:

On 12 March 2015, NASA launched the Magnetospheric Multiscale (MMS) probes to study the electron scale physics of magnetic reconnection in the Earth¹s magnetosphere. The four spacecraft fly in a tetrahedral formation in order to obtain 3-dimensional context, and make measurements of particles and fields at unprecedented temporal resolution. MMS also includes 30m tip-to-tip axial… Read more »