X-ray observation of protostars in the HH24-26 region in Orion B molecular cloud

We observe Xray emission from low mass protostars and HerbigHaro objects inthe HH2426 region in Orion B molecular cloud. One goal is to establish theimportance of stardisk interactions in Class I protostars. We examine if the6.4 keV fluorescence line come from circumstellar disks, showing that thesedisks must be irradiated from plasma confined in large magnetic loops. Thesecond goal is to investigate the Xray emission from Class 0 protostars, which is important since at this stage the central star has not yet assembled, hence the dynamo mechanism may not have started. The third goal is to investigate the origin of Xray emission from HerbigHaro objects, whose nature has not been well understood. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]