National Technical Reports Library

The National Technical Information Service acquires, indexes, abstracts, and archives the largest collection of U.S. government-sponsored technical reports in existence. The NTRL offers online, free and open access to these authenticated government technical reports. Technical reports and documents in its repository may be available online for free either from the issuing federal agency, the U.S. Government Publishing Office’s Federal Digital System website, or through search engines.

Details

DE2004826718

Publication Date	2004
Personal Author	Correa, C.
Page Count	30
Abstract	We report results of hard X-Ray observations of the clusters Coma, Abell 496, Abell754, Abell 1060, Abell 1367, Abell2256 and Abell3558 using RXTE data from the NASA HEASARC public archive. Specifically we searched for clusters with hard x-ray emission that can be fitted by a power law because this would indicate that the cluster is a source of non-thermal emission. We are assuming the emission mechanism proposed by Vahk Petrosian where the inter cluster space contains clouds of relativistic electrons that by themselves create a magnetic field and emit radio synchrotron radiation. These relativistic electrons Inverse-Compton scatter Microwave Background photons up to hard x-ray energies. The clusters that were found to be sources of non-thermal hard x-rays are Coma, Abell496, Abell754 and Abell 1060.
Keywords	X rays Galaxies Clouds Electrons Magnetic fields Photons Synchrotron radiation Abell clusters Coma clusters Emissions Non-thermal processes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Harvard Univ., Cambridge, MA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200508

Hard X-Ray RXTE Observations of Clusters of Galaxies: Searching for Hard X-ray Emission due to Non-thermal Processes.

Hard X-Ray RXTE Observations of Clusters of Galaxies: Searching for Hard X-ray Emission due to Non-thermal Processes.
DE2004826718

Publication Date	2004
Personal Author	Correa, C.
Page Count	30
Abstract	We report results of hard X-Ray observations of the clusters Coma, Abell 496, Abell754, Abell 1060, Abell 1367, Abell2256 and Abell3558 using RXTE data from the NASA HEASARC public archive. Specifically we searched for clusters with hard x-ray emission that can be fitted by a power law because this would indicate that the cluster is a source of non-thermal emission. We are assuming the emission mechanism proposed by Vahk Petrosian where the inter cluster space contains clouds of relativistic electrons that by themselves create a magnetic field and emit radio synchrotron radiation. These relativistic electrons Inverse-Compton scatter Microwave Background photons up to hard x-ray energies. The clusters that were found to be sources of non-thermal hard x-rays are Coma, Abell496, Abell754 and Abell 1060.
Keywords	X rays Galaxies Clouds Electrons Magnetic fields Photons Synchrotron radiation Abell clusters Coma clusters Emissions Non-thermal processes
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Harvard Univ., Cambridge, MA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200508