Upcoming SwRI Boulder Colloquia

Colloquia are normally on Tuesdays at 11:00 am in the 4th-floor conference room, except as indicated below in bold text.
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For questions or suggestions for speakers, please contact the SwRI colloquium organizers:
Raluca Rufu, 303-226-0879 or raluca(at)boulder.swri.edu
Julien Salmon, 720-208-7203 or julien(at)boulder.swri.edu
Kelsi Singer, 303-226-5910 or ksinger(at)boulder.swri.edu
Sierra Ferguson, sierra.ferguson(at)swri.org
Rogerio Deienno, rogerio.deienno(at)swri.org
Sam Van Kooten, 303-226-5909 or svankooten(at)boulder.swri.edu

To be added to the SwRI Boulder Colloquia email list, please contact Kelsi Singer, ksinger(at)boulder.swri.edu

Suggest a New Speaker HERE

Tue Jul 16, 2024
In Room 424 11:00 am Kinfe Teweldebirhan Aksum University Magnetic Field Dependent Inflows Towards Active Regions and Their Nonlinear Impact on a 3D Babcock-Leighton Solar Dynamo Model

No coffee or snacks available---we'll be roughing it in a brand-new conference room

Abstract: The changing magnetic fields of the Sun are generated and maintained by a solar dynamo, the exact nature of which remains an unsolved fundamental problem in solar physics. Our objective in this paper is to investigate the role and impact of converging flows toward Bipolar Magnetic Regions (BMR inflows) on the Sun’s global solar dynamo. These flows are large-scale physical phenomena observed and should be included in any comprehensive solar dynamo model. We have augmented the Surface flux Transport And Babcock–LEighton (STABLE) dynamo model to study the nonlinear feedback effect of BMR inflows with magnitudes varying with surface magnetic fields. This fully-3D realistic dynamo model produces the sunspot butterfly diagram and allows a study of the relative roles of dynamo saturation mechanisms such as tilt-angle quenching and BMR inflows. The results of our STABLE simulations show that magnetic field-dependent BMR inflows significantly affect the evolution of the BMRs themselves and result in a reduced buildup of the global poloidal field due to local flux cancellation within the BMRs to an extent that is sufficient to saturate the dynamo. Consequently, for the first time, we have achieved fully 3D solar dynamo solutions in which BMR inflows regulate the amplitudes and periods of the magnetic cycles.

Thu Aug 22, 2024 11:00 am Barbara Thompson NASA Goddard Next generation communication challenges

Tue Aug 27, 2024 11:00 am Perianne Johnson University of Texas Institute for Geophysics TBD ocean world seafloor processes

location will be announced once the new building is open
Tue Oct 1, 2024 11:00 am Kiana De'Marius McFadden Lunar and Planetary Laboratory TBD

The presentation site will be updated later after our move to the new building
Wed Apr 30, 2025
In CR5+webex 11:00 am Andy López-Oquendo Northern Arizona University TBD

Seminar needs to be rescheduled, marking it as 2025 date as a placeholder

Tue Jul 16, 2024 In Room 424	11:00 am	Kinfe Teweldebirhan	Aksum University	Magnetic Field Dependent Inflows Towards Active Regions and Their Nonlinear Impact on a 3D Babcock-Leighton Solar Dynamo Model
	No coffee or snacks available---we'll be roughing it in a brand-new conference room
	Abstract:	The changing magnetic fields of the Sun are generated and maintained by a solar dynamo, the exact nature of which remains an unsolved fundamental problem in solar physics. Our objective in this paper is to investigate the role and impact of converging flows toward Bipolar Magnetic Regions (BMR inflows) on the Sun’s global solar dynamo. These flows are large-scale physical phenomena observed and should be included in any comprehensive solar dynamo model. We have augmented the Surface flux Transport And Babcock–LEighton (STABLE) dynamo model to study the nonlinear feedback effect of BMR inflows with magnitudes varying with surface magnetic fields. This fully-3D realistic dynamo model produces the sunspot butterfly diagram and allows a study of the relative roles of dynamo saturation mechanisms such as tilt-angle quenching and BMR inflows. The results of our STABLE simulations show that magnetic field-dependent BMR inflows significantly affect the evolution of the BMRs themselves and result in a reduced buildup of the global poloidal field due to local flux cancellation within the BMRs to an extent that is sufficient to saturate the dynamo. Consequently, for the first time, we have achieved fully 3D solar dynamo solutions in which BMR inflows regulate the amplitudes and periods of the magnetic cycles.
Thu Aug 22, 2024	11:00 am	Barbara Thompson	NASA Goddard	Next generation communication challenges
Tue Aug 27, 2024	11:00 am	Perianne Johnson	University of Texas Institute for Geophysics	TBD ocean world seafloor processes
	location will be announced once the new building is open
Tue Oct 1, 2024	11:00 am	Kiana De'Marius McFadden	Lunar and Planetary Laboratory	TBD
	The presentation site will be updated later after our move to the new building
Wed Apr 30, 2025 In CR5+webex	11:00 am	Andy López-Oquendo	Northern Arizona University	TBD
	Seminar needs to be rescheduled, marking it as 2025 date as a placeholder