Origin of the Galactic Ridge X-Ray Emission

Details Origin of the Galactic Ridge X-Ray Emission Origin of the Galactic Ridge X-Ray Emission

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..146e&link_type=abstract

Chandra Proposal ID #01910755

Computer Science

Chandra Proposal Id #01910755

Scientific paper

Origin of the Galactic Ridge X-ray Emission (GRXE) is unknown yet. The most controversial issue is if GRXE is truly diffuse emission or composed of numerous point sources. The first imaging observation of GRXE above 2 keV with ASCA could not clearly answer to this question, being limited by the ASCA XRT spatial resolution (HPD 3 arcmin). With AXAF, having much superior spatial resolution, we will be unambiguously give the answer, being able to detect point sources with a luminosity of 4x10^{32} erg s^{-1} at 10 kpc. If GRXE is truly diffuse emission, the interstellar magnetic reconnection is proposed as a mechanism to heat and confine the hot plasma. We may observe diffuse X-rays distribute along locally intensified magnetic fields, as observed in the Solar flares.

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