On 2/23/23, the IXPE Observatory began a Target of Opportunity (ToO) observation of the accreting neutron star LS V +44 17 in the declining phase of an outburst. On February 9, IXPE had observed the outburst in response to a previous ToO request.
On 2/28/23, NASA posted “NASA’s IXPE Unlocks Mysteries of Historic Tycho Supernova”, which included superposed Chandra and IXPE images of the remnant of a supernova that occurred in 1572.
