Use of the Frequency Agile Solar Radiotelescope for Space Weather A New Solar-dedicated Radio Facility Dale E. Gary, NJIT; Stephen M. White, U Maryland.

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Presentation transcript:

Use of the Frequency Agile Solar Radiotelescope for Space Weather A New Solar-dedicated Radio Facility Dale E. Gary, NJIT; Stephen M. White, U Maryland

Outline of Talk What is FASR? Space Weather Radiophysics Timeline Conclusions What is FASR? Space Weather Radiophysics Timeline Conclusions

What is FASR? Frequency-Agile Imaging Array Of order 100 antennas (5000 baselines) Better than 1 imaging at 1 s time resolution Full frequency coverage GHz Designed Specifically for Solar Imaging Full Sun (to at least 12 GHz) Designed for solar spatial scales Designed for solar brightness variability Frequency-Agile Imaging Array Of order 100 antennas (5000 baselines) Better than 1 imaging at 1 s time resolution Full frequency coverage GHz Designed Specifically for Solar Imaging Full Sun (to at least 12 GHz) Designed for solar spatial scales Designed for solar brightness variability Isaac Gary

FASR Flyover Movie Isaac Gary

Outline of Talk What is FASR? Space Weather Radiophysics Timeline Conclusions What is FASR? Space Weather Radiophysics Timeline Conclusions

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

3D View of Solar Atmosphere S. White

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

Coronal Magnetic Fields J. Lee

Lee & White

Coronal Magnetograms S. White

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

Nobeyama 17 GHz synoptic map Synoptic Data From K Shibasaki 1998

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

Coronal Mass Ejections from Bastian et al. 2002

CME Visibility in Radio Best frequency to see thermal emission should be around 1 GHz or less. Need very good imaging to see relatively low contrast Multi-frequency gives physical parameters. Best frequency to see thermal emission should be around 1 GHz or less. Need very good imaging to see relatively low contrast Multi-frequency gives physical parameters. from Bastian & Gary 1997

Observed CME Spectrum from Bastian et al. 2002

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

Erupting Prominences Gopalswamy et al. 1998

Space Weather Radiophysics 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration 3D View of Solar Atmosphere Coronal Magnetic Fields Synoptic Data CMEs on the Disk Eruptive Prominences Particle Acceleration

from Aschwanden et al. 1996

from Aschwanden et al Type U bursts observed by Phoenix/ETH and the VLA. Particle Trajectories

Outline of Talk What is FASR? Space Weather Radiophysics Timeline Conclusions What is FASR? Space Weather Radiophysics Timeline Conclusions

Timeline For FASR : Design Study (NSF/ATI) International Science Definition Workshop (May 23-25, 2002) Configuration studies; Software architecture Design options; Costing (Current estimate $30 M) : Design and Development Prototype Major Elements Prototype Array (< 10 elements) Refine Hardware and Software Design : Construction : Design Study (NSF/ATI) International Science Definition Workshop (May 23-25, 2002) Configuration studies; Software architecture Design options; Costing (Current estimate $30 M) : Design and Development Prototype Major Elements Prototype Array (< 10 elements) Refine Hardware and Software Design : Construction

Outline of Talk What is FASR? Space Weather Radiophysics Timeline Conclusions What is FASR? Space Weather Radiophysics Timeline Conclusions

FASR… is a solar-dedicated radio array designed specifically for the Sun will obtain high-resolution images at hundreds of frequencies, GHz will measure coronal magnetic fields and make coronal magnetograms will image CMEs and provide physical parameters (T, B, n e ) FASR… is a solar-dedicated radio array designed specifically for the Sun will obtain high-resolution images at hundreds of frequencies, GHz will measure coronal magnetic fields and make coronal magnetograms will image CMEs and provide physical parameters (T, B, n e )

Conclusions FASR… will image thermal and nonthermal emission simultaneously will study particle acceleration will open a new era of study of the Sun and make new discoveries we cannot predict FASR… will image thermal and nonthermal emission simultaneously will study particle acceleration will open a new era of study of the Sun and make new discoveries we cannot predict

FASR and Space Weather Standard observing mode Daily data products Coronal magnetograms Coronal temperature maps CME movies (?) Type II, Type III movies Input from Space Weather Community What data products are most useful What operational modes are needed What are we missing? Standard observing mode Daily data products Coronal magnetograms Coronal temperature maps CME movies (?) Type II, Type III movies Input from Space Weather Community What data products are most useful What operational modes are needed What are we missing?

Principal Institutions and People Principal Institutions and People NJITD. E. Gary, P. Goode, J. Lee NRAOT. S. Bastian, J. Webber UMdS. M. White, A. Harris BerkeleyG. J. Hurford LucentL. J. Lanzerotti NSOC. Keller NJITD. E. Gary, P. Goode, J. Lee NRAOT. S. Bastian, J. Webber UMdS. M. White, A. Harris BerkeleyG. J. Hurford LucentL. J. Lanzerotti NSOC. Keller

Nonthermal CME Parameters from Bastian & Gary 1997