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BRAZILIANSOLARSPECTROSCOPE

RECENT OBSERVATIONS WITH THEBRAZILIAN

SOLAR SPECTROSCOPE

BSSFrancisco C. R. Fernandes

FMI / DAS / INPEBRAZIL

HESSI Data Analysis WorkshopFebruary-March/2001

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BRAZILIANSOLARSPECTROSCOPE

BLOCK DIAGRAM OF BSS

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BRAZILIANSOLARSPECTROSCOPE

BSS SPECIFICATIONSAntenna 9-m diameter polar mountFeeder cross log-periodicFrequency Band 200-2500 MHzTime Resolution 10 20 50 100 1000 msFrequency Resolution 3 MHzAbsolute timming accuracy 3 msSensibility ~3 s.f.u.Number of channels 25 50 100Observation time 11:30 – 19:00 UTVisualization quasi-real timeFlexibility to choose parameters

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BRAZILIANSOLARSPECTROSCOPE

BSSView

SOFTWARES FOR DATAVISUALIZATION AND ANALYSIS

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BRAZILIANSOLARSPECTROSCOPE

BSSData

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BRAZILIANSOLARSPECTROSCOPE

RECENT OBSERVATIONS• TOTAL OF ABOUT 1500 HOURS OF OBSERVATIONS• > 100 SOLAR FLARES OBSERVED

HIGHLIGTHS:PATCH-LIKE EMISSIONS WITH DIFUSE TAILSDECIMETRIC HARMONIC ZEBRA EMISSIONSRAPID FREQUENCY OSCILATIONSDOTS WITH INTENSITY X FREQUENCY VARIATIONFINE STRUCTURES (CHROMOSPHERIC EVAPORATION)

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BRAZILIANSOLARSPECTROSCOPE

FLARE 06/06/00

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BRAZILIANSOLARSPECTROSCOPE

PRE-FLARE FINE STRUCTURES

PATCHES WITH DIFUSE TAIL

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BRAZILIANSOLARSPECTROSCOPE

RAPID FREQUENCY OSCILATIONS

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BRAZILIANSOLARSPECTROSCOPE

SPIKES AND DOTS

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BRAZILIANSOLARSPECTROSCOPE

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BRAZILIANSOLARSPECTROSCOPE

TYPE III BURSTS

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BRAZILIANSOLARSPECTROSCOPE

POTENCIAL DO BSS

• solar bustsassociated with impulsive phase of the flares and determination of:

exiceted and emitting agents acceleration region parameters of chromospheric evaporation

• temporal fragmentation in the energy release

• emission mechanism for FEs

• multi-spectral investigations

High resolution, high sensitivity and wide band will permit to investigate: