Hi everyone,
In the spirit of a number of recent papers that have been focused on trying
to determine the dominant components of the emission in the wavelength
channels of imaging instruments (AIA, in particular), Jim and I would like
to share with you all a link to a paper on this very topic that was recently
published in the ApJ Supplement Series:
http://iopscience.iop.org/0067-0049/194/2/26/pdf/apjs_194_2_26.pdf
Our aim in carrying out the work described in this paper was to provide a
…
[View More]large amount of quantitative data from our modeling studies that we hope
will be of use in the analysis of observationally gathered data.
Best wishes,
Steve
-----Original Message-----
From: loops-bounces(a)solar.physics.montana.edu
[mailto:loops-bounces@solar.physics.montana.edu] On Behalf Of Paola Testa
Sent: Tuesday, September 20, 2011 10:00 AM
To: A mailing list for scientists involved in the observation and modeling
of solar loop structures
Cc: Juan Martinez Sykora
Subject: [Loops] Forward modeling of emission in SDO/AIA passbands from
dynamic 3D simulations
Hello all,
here is a link to a preprint of a paper, accepted for publication on ApJ,
that is also discussing issues related to the interpretation of AIA
observations:
http://adsabs.harvard.edu/abs/2011arXiv1109.0704M
cheers,
Paola
On 9/9/11 12:03 PM, Giulio Del Zanna wrote:
>
> Dear colleagues,
>
> here is a link to a preprint that discusses various
> (important) issues related to the interpretation of AIA data:
>
> http://solar.physics.montana.edu/cgi-bin/eprint/index.pl?entry=15555
>
> Those of you that were present at the excellent Mallorca meeting might
> recall the issues we raised there. The paper, which follows on from
> O'Dwyer et al., contains more.
>
> I encourage all to follow the example in the Appendix to calculate
> your own AIA responses using CHIANTI. We will soon release v.7, but do
> not expect huge differences.
> We are working to try and improve the atomic data for AIA, more to come.
>
>
> best wishes,
_______________________________________________
Loops mailing list
Loops(a)solar.physics.montana.edu
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Hi Loopsters,
We enjoyed a very successful workshop in Mallorca. Many thanks to the SOC and LOC and especially to their chairs, Inaki Ugarte Urra and Jose Luis Ballester, respectively. These guys put in a lot of hard work.
We also thank Spiro Antiochos, Joan Schmelz, and Robert Walsh, whose terms on the Steering Committee are ending. Please send me nominations for their replacements, including self nominations. The Steering Committee will then vote from a list of candidates. (…
[View More]Spiro, Joan, and Robert are eligible to serve again.)
It's never too early to start planning for the next workshop, in 2 years. Please contact me if you are interested in hosting. We have some tentative offers already, but they are highly tentative at this time.
Best wishes,
Jim
********************************************************************************
James A. Klimchuk
NASA Goddard Space Flight Center
Solar Physics Lab, Code 671
Bldg. 21, Rm. 158
Greenbelt, MD 20771
USA
Phone: 1-301-286-9060
Fax: 1-301-286-7194
E-mail: James.A.Klimchuk(a)nasa.gov<mailto:James.A.Klimchuk@nasa.gov>
Home page: http://science.gsfc.nasa.gov/671/staff/bios/cs/James_Klimchuk_ssi.html
No endorsement by NASA is implied for any correspondence related to my role as an officer of professional organizations (American Geophysical Union, American Astronomical Society, International Astronomical Union).
********************************************************************************
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Dear all,
here is the arxiv link to a new paper that has just been published on
ApJ Letters
http://arxiv.org/abs/1204.0041
The paper addresses diagnostics of hot plasma using AIA data and
validating the method with simultaneous EIS spectroscopic data. Please
find the title and abstract below.
cheers,
Paola
"Hinode/EIS spectroscopic validation of very hot plasma imaged
with Solar Dynamics Observatory in non-flaring active region cores"
Testa P. & Reale F.
Abstract:
We use coronal …
[View More]imaging observations with SDO/AIA, and Hinode/EIS spectral
data, to explore the potential of narrow band EUV imaging data for
diagnosing
the presence of hot (T >~ 5 MK) coronal plasma in active regions. We
analyze observations of two active regions (AR 11281, AR 11289) with
simultaneous
AIA imaging, and EIS spectral data, including the Ca xvii line (at 192.8A)
which is one of the few lines in the EIS spectral bands sensitive to hot
coronal
plasma even outside flares. After careful coalignment of the imaging and
spectral
data, we compare the morphology in a 3 color image combining the 171,
335, and
94A AIA spectral bands, with the image obtained for Ca xvii emission
from the
analysis of EIS spectra. We find that in the selected active regions the
Ca xvii
emission is strong only in very limited areas, showing striking
similarities with
the features bright in the 94A (and 335A) AIA channels and weak in the 171A
band. We conclude that AIA imaging observations of the solar corona can be
used to track hot plasma (6-8 MK), and so to study its spatial
variability and
temporal evolution at high spatial and temporal resolution.
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