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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I first tried to send my message with the
Plan B white paper as an attachment, but unfortunately it exceeded the allowed
e-mail size. So rather than wait for a judgment from the moderator, I cancelled
my message and have resent it without the attachment.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>George<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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</span></font></div>
<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> loops-bounces@mithra.physics.montana.edu
[mailto:loops-bounces@mithra.physics.montana.edu] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Leon Golub<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, June 09, 2011 9:26
AM<br>
<b><span style='font-weight:bold'>To:</span></b>
loops@mithra.physics.montana.edu<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Loops] [1106.1591]
Solar Dynamics Observatory discovers thin high temperature strands in coronal
active regions</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'>George et al.,<br>
<br>
As I think you all saw from Ed DeLuca's message (I don't think that
"loops-bounce" in the "From" header means your message has
been rejected, right?), there are two instrument concepts being discussed these
days for direct spectroscopic imaging at X-ray wavelengths. I think that the
5-25A wavelength range has excellent potential for addressing the controversies
we're all embroiled in now. So in addition to the instruments George has
mentioned, there are some new concepts that may have a chance of being tried
out in the next few years. If NASA has adequate funding, we may get to see them
flown soon.<br>
<br>
<st1:country-region w:st="on"><st1:place w:st="on">Leon</st1:place></st1:country-region><br>
<br>
<br>
On 6/9/2011 9:01 AM, Doschek, George wrote: <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"><!--[if gte mso 9]><xml>
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</xml><![endif]-->Alan, in reply to you: The Japanese have chosen “Plan
B” for the Solar-C mission, and according to Saku Tsuneta, they are
moving forward with the project in spite of the horrible disaster they must
deal with. Plan B is a high spatial and spectral resolution
imaging/spectrometer (~0.2”) involving two instruments and a very high
spatial resolution EUV/UV imager. The combination covers the entire
atmosphere from the chromosphere to X-ray solar flares (see white paper to the <st1:country-region u4:st="on"><st1:place u4:st="on"><st1:country-region
w:st="on"><st1:place w:st="on">US</st1:place></st1:country-region></st1:place></st1:country-region>
decadal survey). So Solar-C, if approved by funding agencies and
implemented, should clarify a lot of the issues dealing with loops and how they
are heated.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>In addition, there is the Lockheed SMEX
IRIS mission undergoing development, and there are also a number of interesting
rocket experiments either under construction or proposed.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>To the group: Please add whatever else I
may have overlooked.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>George Doschek<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><u1:p> </u1:p></span></font><o:p></o:p></p>
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<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>From:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> <a href="mailto:loops-bounces@mithra.physics.montana.edu">loops-bounces@mithra.physics.montana.edu</a>
[<a href="mailto:loops-bounces@mithra.physics.montana.edu">mailto:loops-bounces@mithra.physics.montana.edu</a>]
<b><span style='font-weight:bold'>On Behalf Of </span></b>Alan Gabriel<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, June 09, 2011 7:56
AM<br>
<b><span style='font-weight:bold'>To:</span></b> A mailing list for scientists
involved in the observation and modeling ofsolar loop structures<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Loops] [1106.1591]
Solar Dynamics Observatory discovers thin high temperature strands in coronal
active regions</span></font><o:p></o:p></p>
</div>
<u1:p></u1:p>
<p class=MsoNormal><font size=3 color=black
face="Times New
Roma"><span style='font-size:12.0pt;
font-family:"Times New\000D\000A Roma"'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 color=black
face="Times New
Roma"><span style='font-size:12.0pt;
font-family:"Times New\000D\000A Roma"'>A nice paper and an
important contribution to the debate. But the jury is still out. We may never
resolve this without real spectroscopic evidence of the very hot component.
Where is our future spectroscopy coming from??<br>
<br>
Alan Gabriel<br>
<br>
<br>
Le 09/06/2011 10:52, Fabio Reale a écrit : <u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt'>Dear colleagues<br>
please find at the following link the preprint of a work
accepted for publication on the ApJ Letters, showing new strong evidence of
finely-structured loops with impulsive nanoflare activity in active regions:<br>
<br>
<a href="http://arxiv.org/abs/1106.1591" moz-do-not-send=true>http://arxiv.org/abs/1106.1591</a><br>
<br>
The abstract is below.<br>
<br>
Best regards<br>
Fabio Reale<u1:p></u1:p><o:p></o:p></span></font></p>
<h1><b><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt'>Solar Dynamics Observatory discovers thin high temperature strands in
coronal active regions</span></font><u1:p></u1:p><o:p></o:p></b></h1>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><span class=descriptor><font
size=3 color=black face="Times New
"><span style='font-size:12.0pt;
font-family:"Times New\000D\000A"'>Authors:</span></font></span> Fabio Reale,
Massimiliano Guarrasi, Paola Testa, Edward E. DeLuca, Giovanni<br>
Peres, Leon Golub<u1:p></u1:p><o:p></o:p></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal><span class=descriptor><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt'>Abstract:</span></font></span>
One scenario proposed to explain the million degrees solar corona is a
finely-stranded corona where each strand is heated by a rapid pulse. However, such
fine structure has neither been resolved through direct imaging observations
nor conclusively shown through indirect observations of extended superhot
plasma. Recently it has been shown that the observed difference in appearance
of cool and warm coronal loops (~1 MK, ~2-3 MK, respectively) -- warm loops
appearing "fuzzier" than cool loops -- can be explained by models of
loops composed of subarcsecond strands, which are impulsively heated up to ~10
MK. That work predicts that images of hot coronal loops (>~6 MK) should
again show fine structure. Here we show that the predicted effect is indeed
widely observed in an active region with the Solar Dynamics Observatory, thus
supporting a scenario where impulsive heating of fine loop strands plays an important
role in powering the active corona. <u1:p></u1:p><o:p></o:p></p>
</blockquote>
<p class=MsoNormal><font size=3 color=black
face="Times New
Roma"><span style='font-size:12.0pt;
font-family:"Times New\000D\000A Roma"'><br>
<br>
<br>
</span></font><o:p></o:p></p>
<u1:p></u1:p><pre><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'><u1:p> </u1:p><o:p></o:p></span></font></pre><pre><fieldset class="mimeAttachmentHeader"></fieldset><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><u1:p> </u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Loops mailing list<u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="mailto:Loops@solar.physics.montana.edu" moz-do-not-send=true>Loops@solar.physics.montana.edu</a><u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="https://mithra.physics.montana.edu/mailman/listinfo/loops"
moz-do-not-send=true>https://mithra.physics.montana.edu/mailman/listinfo/loops</a><u1:p></u1:p><o:p></o:p></span></font></pre>
<p class=MsoNormal><font size=3 color=black
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font-family:"Times New\000D\000A Roma"'><br>
<br>
<br>
</span></font><o:p></o:p></p>
<u1:p></u1:p><pre><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>-- <u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>______________________________________________________________________<u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Alan GABRIEL <a
href="mailto:alan.gabriel@ias.u-psud.fr" moz-do-not-send=true>alan.gabriel@ias.u-psud.fr</a> <u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'> <u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><u1:p> </u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Institut d'Astrophysique Spatiale tel : (33) 1 69 85 85 10<u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Batiment 121, Universite Paris XI fax : (33) 1 69 85 86 75<u1:p></u1:p><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>91405 ORSAY Cedex mobile : (33) 6 72 14 23 89<u1:p></u1:p><o:p></o:p></span></font></pre><pre><st1:country-region u4:st="on"><st1:place u4:st="on"><st1:country-region
w:st="on"><st1:place w:st="on"><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt'>France</span></font></st1:place></st1:country-region></st1:place></st1:country-region> <u1:p></u1:p><o:p></o:p></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_____________________________________________________________________<u1:p></u1:p><o:p></o:p></span></font></pre><pre
wrap=""><font size=2 color=black face="Courier New"><span style='font-size:
10.0pt'><o:p> </o:p></span></font></pre><pre><fieldset class="mimeAttachmentHeader"></fieldset><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>_______________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'>Loops mailing list<o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="mailto:Loops@solar.physics.montana.edu">Loops@solar.physics.montana.edu</a><o:p></o:p></span></font></pre><pre><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt'><a
href="https://mithra.physics.montana.edu/mailman/listinfo/loops">https://mithra.physics.montana.edu/mailman/listinfo/loops</a><o:p></o:p></span></font></pre></div>
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