Calendar

Jan
24
Wed
Colloquium Thesis Proposal: Laurel Farris
Jan 24 @ 2:30 pm – 3:30 pm
Colloquium Thesis Proposal: Laurel Farris @ Science Hall, Room 110

Characterizing the oscillatory response of the chromosphere during solar flares

Laurel Farris; NMSU Astronomy Department

Quasi-periodic pulsations (QPPs) are observed in the emission of solar flares over a wide range of wavelengths,

particularly in the radio and hard x-ray regimes where non-thermal emission dominates. These pulsations are

considered to be an intrinsic feature of flares, yet the exact mechanism that triggers them remains unclear.

There have been reports of an increase in the oscillatory power at 3-minute periods (the local acoustic

cutoff frequency) in the solar chromosphere associated with flaring events. I propose to investigate the

chromospheric response to flares by inspecting the spatial and temporal onset and evolution of the 3-minute

oscillatory power, along with any QPP patterns that may appear in chromospheric emission. The analysis

will be extended to multiple flares, and will include time before, during, and after the main event. To test

initial methods, the target of interest was the well-studied 2011 February 15 X-class flare. Data from two

instruments on board the Solar Dynamics Observatory (SDO) were used in the preliminary study, including

continuum images from the Helioseismic and Magnetic Imager (HMI) and UV images at 1600 and 1700

Angstroms from the Atmospheric Imaging Assembly (AIA). Later, spectroscopic data from the Interface

Region Imaging Spectrometer (IRIS) will be used to examine velocity patterns in addition to intensity.

Jan
26
Fri
Colloquium: Zheng Cai (Host: Kristian Finlator)
Jan 26 @ 3:15 pm – 4:15 pm
Colloquium: Zheng Cai (Host: Kristian Finlator) @ BX102

Colloquium Title

Colloquium Speaker Name, Affiliation

Abstract text

Observatory Open House
Jan 26 @ 8:00 pm – 9:00 pm
Observatory Open House

Your hosts for the January 2018 Campus Observatory Open House are Rene Walterbos, Jeremy Emmett, and Caitlin Doughty.

Feb
2
Fri
Colloquium: OPEN (Host: TBD)
Feb 2 @ 3:15 pm – 4:15 pm
Colloquium: OPEN (Host: TBD) @ BX102

Colloquium Title

Colloquium Speaker Name, Affiliation

Abstract text

Feb
9
Fri
Colloquium: OPEN (Host: TBD)
Feb 9 @ 3:15 pm – 4:15 pm
Colloquium: OPEN (Host: TBD) @ BX102

Colloquium Title

Colloquium Speaker Name, Affiliation

Abstract text

Feb
16
Fri
Colloquium Thesis Proposal: Agnar Hall
Feb 16 @ 1:00 pm – 2:00 pm
Colloquium Thesis Proposal: Agnar Hall

Colloquium Title

Colloquium Speaker Name, Affiliation

Abstract text

Feb
23
Fri
Colloquium Thesis Proposal: Jodi Berdis
Feb 23 @ 3:15 pm – 4:15 pm
Colloquium Thesis Proposal: Jodi Berdis @ BX102

Colloquium Title

Jodi Berdis, NMSU

Abstract text

Observatory Open House
Feb 23 @ 8:00 pm – 9:00 pm
Observatory Open House

Your hosts for the February Campus Observatory Open House are Moire Prescott, Agnar Hall, Emma Dahl, and Kristen Luchsinger.

Mar
2
Fri
Colloquium PhD Thesis Defense: Gordon MacDonald
Mar 2 @ 3:15 pm – 4:15 pm
Colloquium PhD Thesis Defense: Gordon MacDonald @ BX102

Colloquium Title

Gordon MacDonald, NMSU

Abstract

Mar
9
Fri
Colloquium: Wilson Cauley (Host: Kristen Luchsinger)
Mar 9 @ 3:15 pm – 4:15 pm
Colloquium: Wilson Cauley (Host: Kristen Luchsinger) @ BX102

Colloquium Title

Wilson Cauley (Arizona State University)

Abstract text