Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010
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Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010. Study of the solar inner corona and search for coronal streams from active regions using SWAP off-disk observations. PI: Vladimir Slemzin, LPI, Moscow Co-I: Sergey Kuzin, Alexander Urnov, Farid Goryaev - LPI

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Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

Study of the solar inner corona and search for coronal streams from active regions using SWAP off-disk observations

PI:Vladimir Slemzin, LPI, Moscow

Co-I:Sergey Kuzin, Alexander Urnov, Farid Goryaev - LPI

Louise Harra – MSSL/UCL


Spirit studies of the inner corona slemzin et al angeo 2008

R=1.1 2010

Helmet-like structure

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

SPIRIT studies of the inner corona (Slemzin et al., AnGeo 2008)


Overlay of the disk and corona images 2010

Stray light

In the Hershel telescopes the level of straylight is lower than in the Ritchey-Chretien telescopes (large mirror- detector distance, no elements in between)

PSF is measured during eclipses

304 A 175 A

5

2002-06-1101:06:40


Radial distribution at the equatorial plane 2010

Ts =1.53 MK

1.62 MK

1.32 MK

Active sun

16/06/02

Quiet sun

04/04/96

Hydrostatic approach: radial distribution of radiation in EUV emission lines excited by collisions (I ~ Ne 2)

-density scale of height

Ts– hydrostatic temperature

12


Sources of the solar wind
Sources of the solar wind 2010

Quasi-stationary solar wind at 1 AU

fast SW (600-800 km/s)

slow SW (400-600 km/s)

Quasi-stationarycoronal streams (from several days to several rotations)

Streams from polar coronal holes, polar rays and plumes

WL streamers

Streams from ARs, low-latitude CHs

Transient solar wind

(200-700 km/s)

Transient streams (several hours)

CME

Jets

small-scale events


Main task and goals of the proposal
Main task and goals of the proposal 2010

Main task: to study the global and local structure of the solar inner corona from the limb to ~ 2 Rsun by means of the SWAP off-disk EUV observations in coordination with Hinode/EIS.

Goals:

  • Global survey of the inner corona at rising solar activity and comparison of its structure with measurements at solar maximum (SPIRIT) and deep minimum (TESIS).

  • Search of the solar wind streams from active regions.

  • Determination of physical properties of the coronal streams and other local magneto-plasma formations.


Association of the solar wind streams with solar sources
Association of the solar wind streams with solar sources 2010

1).Temporal correlation between the solar wind variations and the solar rotation

2). Outflows from solar sources detected by the Doppler shift of coronal lines

3). Tracing of the coronal rays from the solar source to the outer corona (streamer)

4). Ionic composition of the plasma in the solar source and at 1 AU

FIP bias (enhanced FIP abundances)

Fe/O ratio

O+7/ O+6 ratio (freeze-in temperature)


Swap data

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

SWAP data

1x10s 100x10s equatorial scan




Global view of the inner corona combined from 4 swap off point images 10
Global view of the inner corona combined from 4 SWAP off-point images (±10’)

LASCO C2 FOV LED


Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

Detection of coronal outflows with Hinode/EIS

Doppler

velocity

Intensity

Outflows of up to 50 km/s are seen in the boundary of AR, Harra et al. (2008).


Hinode eis data

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

Hinode/EIS data

  • Two EUV bands: 170-210 Å and 250-290 Å

  • CCD camera; Two 2048 x 1024 high QE back illuminated CCDs

  • Spatial resolution: 1 arc sec pixels/2 arc sec resolution

  • Line spectroscopy:

  • ~ 25 km/s per pixel sampling

  • ± 3 km/s with ~ 200 counts in a line profile

  • Field of View:

    • Raster: 6 arc min × 8.5 arc min (max height: 17 arc min)

    • FOV centre moveable E – W by ± 15 arc min

  • Wide temperature coverage: log T = 4.9, 5.3, 5.4, 5.8, 6.0 - 7.3 K

  • 4 slit/slots – 1”, 2”, 40”, 266”


Tesis eis comparison

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

TESIS – EIS comparison

1 August 2009 8 August 2009

AR near small CH

TESIS Fe IX-X 171 A



Hinode xrt tesis 01 08 2010 18 05 ut 01 08 2010 11 26 ut

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

Hinode/XRT TESIS 01/08/2010 18:05 UT 01/08/2010 11:26 UT


Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

TESIS FeIX-X 171 A EIS FeXII 195 A intensity


Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

outflow

TESIS FeIX-X 171 A EIS FeXII 195 A Doppler velocity





Solar wind data - ACE 2010

AR

CH

CH


Working plan of the research

Proposal to the PROBA 2 Guest Investigator Program. June 1, 2010

Working plan of the research

1). Study of the quiet corona by full global survey of the inner corona up to 2 Rsun in 4 off-limb positions. Comparison with the TESIS and SPIRIT data

2). Search of coronal streams originated from active regions (SWAP in coordination with Hinode/EIS):

- Search of the coronal outflows in the active regions near the center of the disk and selection the target object (EIS).

- Observation of the targeted AR during a week (SWAP in standard mode, 10s/1 min);

- Search of the coronal rays from the targeted AR at the limb (SWAP in the W- off-disk mode, 100x10s series, during 2-3 days). The ray should be identified as a bright line having a counterpart in the WL streamer.

3). Diagnostics of plasma in the limb region of the coronal rays and nearby in the corona by the DEM method (using the EIS data in the off-limb mode):Te, Ne, FIP bias


Timeline of observations
Timeline of observations 2010

22/06 SWAP global view (4 pos*100 frames) - Rot.0

19/07 SWAP global view (4 pos*100 frames) - Rot.1

11/08 SWAP solar eclipse

15/08 SWAP global view (4 pos*100 frames) - Rot.2

12/09 SWAP global view (4 pos*100 frames) - Rot.3

T0 EIS start of monitoring ARs at the disk

T1 EIS outflow detection -> warning to SWAP

T1+6d SWAP two-days off-point monitoring (W-limb) position of rays –> warning to EIS

EIS monitoring the ray and nearby regions at the limb


Plan of visits and presentations
Plan of visits and presentations 2010

5-19/11 2010 visit to ROB processing of the data, preparation of LPI – 2, MSSL-1 the report on structure of the global 15 days inner corona to ESWW 2010

(Brugge, 15-19/11 2010) 

20/03 – 2/04 2011 visit to ROB processing of the data, preparation of LPI – 1, MSSL-1 the report of preliminary results to EGU 15 days 2011 (Vienna, 3-8 April 2011).


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