Rachmeler, Laurel A.

Savage, Sabrina L.

Winebarger, Amy R.

NASA Technical Reports Server

Preview of First Results from Hi-C 2.1 and IRIS 
PS:  Sabrina Savage (MSFC) 
 
PI:  Amy Winebarger (MSFC)  
IS:  Laurel Rachmeler (MSFC) 
 
 
SAO
Leon Golub (SAO) 
Robert Walsh (UCLAN) 
Bart DePontieu (LMSAL) 
David Brooks (GMU) 
Jonathan Cirtain (BWXT) 
Ken Kobayashi (MSFC) 
Scott McIntosh (HAO) 
David McKenzie (MSFC) 
Richard Morton (Northumbria) 
Hardi Peter (MPS) 
Paola Testa (SAO) 
Sanjiv Tiwari (BAERI) 
Harry Warren (NRL)  
Sabrina.Savage@nasa.gov 
Science Team:
https://ntrs.nasa.gov/search.jsp?R=20180004633 2019-08-31T15:35:13+00:00Z
Hi-C:  High-resolution Coronal imager 
hic.msfc.nasa.gov 
Telescope design capable of 
~0.2-0.3” spatial resolution 
imaging of the corona. 
 
Pointing stability necessary to 
achieve resolution goal. 
 
Image readout duration and 
data storage system  
capable of maintaining high-
cadence observations. 
Hi-C 1 results 
Hi-C 1 Launch 
White Sands, NM  
July 11, 2012 
Active Region 11520 – 193 Å  
 
26 publications for 5 minutes  
of data! 
 
Science highlights: 
 
-  Braided loops triggering energy 
release through magnetic 
reconnection (Cirtain et al. 2013, 
Nature) 
-  Subflare triggers 
-  Nanoflare heating 
-  Loop sub-structure 
-  Moss dynamics 
-  Penumbral jets 
-  Flows along filament threads 
-  MHD waves 
SDO/AIA 193 Å 
hic.msfc.nasa.gov 
Hi-C 1 results 
hic.msfc.nasa.gov 
Hi-C 1 193 Å AIA 
AIA 
AIA 
AIA 
Hi-C 1 Hi-C 1 
Hi-C 1 
Hi-C 1 
Hi-C 2
Hi-C 2 Launch 
White Sands, NM  
July 27, 2016 
Hi-C 2 mirror recoated to explore the important Chromospheric-
Coronal Connection by targeting specific candidates likely to 
contribute to coronal heating:   
 
1.  Type II spicules 
2.  Hot active region core loops 
Updates for re-flight:
 
-  Cooler bandpass centered on 172 Å
-  Significant improvement in camera quality (new MSFC-build 
designed for super low noise) 
-  IRIS!
Hi-C 2 results
Hi-C 2 Launch 
White Sands, NM  
July 27, 2016 
Fantastic flight performance 
verification of the low-noise 
MSFC-built camera. 
~7e- ~7e- 
~13e- ~8e- 
Hi-C 2.1
Cleaned up 
 
Checked alignment 
 
Upgraded cooling system 
 
Added Hall Effect Sensor 
 
Re-proposed 
Hi-C 2.1
3.5 months after ATP…. 
Hi-C 2.1
Hi-C 2.1 Launch 
White Sands, NM  
May 29, 2018 
Hi-C 2.1 Observations 
2018 May 29 
18:54 UT 
 
Target: AR 12712 
~ 15 minute flight 
 
~  5 minutes of solar 
viewing data 
SDO/AIA 
171 Å 
Hi-C 2.1 172 Å 
Hi-C 2.1 
172 Å 
SDO/AIA 
171 Å 
Hi-C 2.1 
172 Å 



Hi-C 2.1 – What makes this instrument work?  
AIA 
AIA 
AIA 
AIA 
Hi-C 1 Hi-C 1 
Hi-C 1 
Hi-C 1 
HIGH SPATIAL RESOLUTION 
 
HIGH TEMPORAL RESOLUTION 
 
LOW NOISE CAMERA 
 
COORDINATED DATA SETS 
IRIS coordinated data 
IRIS	1330	 IRIS	Mg	II	k	IRIS observations of a subset of the region at high resolution 
and spectra will be used to tie 
small features in the 
chromosphere to those in the 
corona.
IRIS coordinated data 
Provided by B. DePontieu 
IRIS 1300 FOV IRIS 1300 
IRIS coordinated data 
Provided by B. DePontieu 
IRIS 1300 FOV IRIS 1300 
IRIS coordinated data 
Provided by B. DePontieu 
IRIS 1300 FOV IRIS 1400 
IRIS coordinated data 
Provided by B. DePontieu 
IRIS 1300 FOV IRIS 2796 
IRIS coordinated data 
Provided by B. DePontieu 
IRIS 1300 FOV IRIS 2832 
IRIS coordinated data 
Provided by B. DePontieu 
IRIS coordinated data 
IRIS 1300 FOV 
Hinode coordinated data 
All three Hinode instruments successfully captured the Hi-C 2.1 region.   
 
 
•  XRT provides coronal context of the movement of hot plasma in the upper atmosphere 
above the Hi-C features. 
•  EIS provides narrowband spectra of the hot coronal loops thereby precisely measuring 
plasma flow properties.  
•  SOT-SP provides underlying magnetic field information to high precision. 
Hinode coordinated data 
All three Hinode instruments successfully captured the Hi-C 2.1 region.  
XRT	Be-thin	 EIS	Fe	XIII	 SOT-SP	Profiles	
XRT provided by K. Reeves 
Hinode coordinated data 
EIS is BACK!
Provided by H. Warren & D. Brooks 
Science topics being pursued 
•  Thin, stranded loops [width variations] 
•  Flows between transition region, chromosphere, and corona 
•  Spicules 
•  Nano/microflares 
•  Moss/Plage brightenings 
•  Flows along loops 
•  Waves 
•  Mini-jets 
•  Etc. 
Additional Coordinated Data Sets 
•  NuSTAR 
•  BBSO 
•  Owens Valley 
•  ~SST 
** Special thanks for assisting with the coordinations goes out to: 
 
  L. Glesener,  
 K. Reardon,  
 B. Chen,  
 Y. Chai,  
 N. Karuda,  
 P. Antolin,  
 J. Leenaarts, 
 Gregal Vissers  
 
AGU plug 
Add	AGU	session	approved	for	highlighting	sounding	rocket	results.	
	
Hi-C	2.1	science	results	expected	to	be	presented	in	this	session!	
Abstracts due August 1st…. 
Thanks, and stay tuned…. 


Preview of First Results from Hi-C 2.1 and IRIS

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