The Focusing Optics X-ray Solar Imager (FOXSI): Update &amp; Second Launch Project
&lt;p&gt;
	Particle acceleration in solar flares and its contribution to coronal heating are among the main&amp;nbsp; unsolved problems in heliophysics. Accelerated electrons in a plasma radiate hard X-ray (HXR)&amp;nbsp; emission through the well-known process of bremsstrahlung. HXR observations therefore are …