XRT: XBP HOP53
2007-12-26T06:23:24 to 2007-12-27T09:28:00
Science Goal: CORE: SOT continuous magnetic field observations for investigating mechanisms responsible for XBPs and QS dynamics
Program: HOP53_3
Target: QR
xcen=0 ycen=0
Instrument: XRT
HOP/JOP: 0
Description:
Daily Note: HOP53 and SOT synoptic observation will be performed rather than other observations XRT * Continue flare detection mode. * Support HOP 53 (QS and XBP), if no ARs are present on the disk. * HOP 19 a) Search for fast magnetoacoustic waves in active region loops and b) Loop density measurement (target of opportunity) EIS: * Quiet region near disk center (including HOP53) Continuous tracking for a few days is preferred * TOO: Active region loops near the limb SOT * HOP15: Helioseismology observations with SOT (if solar activity is low) - lat = 15 degrees for 12 hours (cancel of one synoptic observation) * One 30-minute synoptic obs for NFI test * HOP53 * TOO: dark filament
Request to XRT HOP Number 0053:
Other Instruments: NONE
Scientific Objectives: Previous magnetic-field observations (/w 1-2 arcsec spatial resolution, longitudinal only) shows that magnetic cancellation is involved in many XBPs and magnetic emergence in a limited number of XBPs (e.g., Harvey et al.) Priest and Parnell (1994) proposed a magnetic canceling model for explaining the overall evolution of XBPs. However, this model has not yet been confirmed with observations. SOT has not yet performed magnetic-field observations suitable for investigating mechanisms responsible for XBPs (see Kotoku et al. 2007 PASJ). The biggest problem in the observations made so far with Hinode is that continuous SOT observations are available only in a few - several hours, which is much shorter than the lifetime of XBPs (8 hrs for small typical XBPs, 48hrs for bigger XBPs) and time-scale of small-scale magnetic field evolution (Schrijver et al. 1998). We are lack of observations with continuous a-few days tracking of a quiet region with Hinode SOT coodinated with XRT and EIS.
