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I have been studying EVE H. S. Hudson Space Sciences Laboratory, University of California, Berkeley, USA Astronomy & Astrophysics Group, Glasgow Berkeley.

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Presentation on theme: "I have been studying EVE H. S. Hudson Space Sciences Laboratory, University of California, Berkeley, USA Astronomy & Astrophysics Group, Glasgow Berkeley."— Presentation transcript:

1 I have been studying EVE H. S. Hudson Space Sciences Laboratory, University of California, Berkeley, USA Astronomy & Astrophysics Group, Glasgow Berkeley Jan. 26, 2011

2 Motivation: global spectrum Berkeley Jan. 26, 2011 Hudson et al. 2009 THz WLF EUV

3 More motivation Berkeley Jan. 26, 2011 Milligan & Dennis 2009

4 Still more motivation Berkeley Jan. 26, 2011 Kowalski et al. 2010

5 …and yet more motivation Berkeley Jan. 26, 2011 Peter et al.1990

6 Flare SOL2010-06-12T00:57 Berkeley Jan. 26, 2011 Martinez-Oliveros et al. 2011

7 Flare SOL2010-06-12T00:57 Berkeley Jan. 26, 2011 Martinez-Oliveros et al. 2011 Eve 304A

8 Sun-as-a-star EUV tools SOHO/SEM: broad EUV band at 30.4+-4 nm SDO/EVE MEGS-A: far-UV, 1 A resolution, 10 s cadence (data available) SDO/EVE MEGS-B: near-UV, 1 A resolution, 10 s cadence (to be released in a week or so) SDO/EVE ESP (broad EUV bands, 0.25 s cadence) Berkeley Jan. 26, 2011

9 Line detail, total and subtracted Berkeley Jan. 26, 2011 Flare vs preflare Impulsive vs gradual

10 Doppler shift? Berkeley Jan. 26, 2011

11 EVE 304A for SOL2010-06-12T00:57 Berkeley Jan. 26, 2011

12 Calibration 0.0006 nm => 0.0006/30.4 c or about 6 km/s Berkeley Jan. 26, 2011

13 Calibration 0.0006 nm => 0.0006/30.4 c or about 6 km/s Amazing! Berkeley Jan. 26, 2011

14 304 time series, one day Berkeley Jan. 26, 2011

15 Flux and Doppler, one day Berkeley Jan. 26, 2011

16 EVE 304 narrow vs SEM Berkeley Jan. 26, 2011

17 EVE 304 vs SEM, broad Berkeley Jan. 26, 2011

18 EVE 304, SEM, EVE broad Berkeley Jan. 26, 2011

19 Broad passband Berkeley Jan. 26, 2011

20 Comments on EVE Lots of lines to work with He II spectrum in the impulsive phase (can see Ly-  and a hint of Ly-  in SOL2010-06-12) Need bigger flares Looking forward to near UV (out to 1500A, I think) as a part of WLF characterization Berkeley Jan. 26, 2011

21 EVE ESP and SOL2010-06-12 Berkeley Jan. 26, 2011

22 ESP 304A for SOL2010-11-06 Berkeley Jan. 26, 2011

23 EVE 304 narrow vs SEM Berkeley Jan. 26, 2011

24 Conclusions The SDO data for the Sun “as a star” are rather fine There are many applications of these data - Global flare spectra - Doppler shifts / flare dynamics - Charge-exchange components - Seismology (classical) - Seismology (coronal) Berkeley Jan. 26, 2011

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