0000000000187286

AUTHOR

Mark W. Bautz

showing 2 related works from this author

On Relativistic Disk Spectroscopy in Compact Objects with X-ray CCD Cameras

2010

X-ray charge-coupled devices (CCDs) are the workhorse detectors of modern X-ray astronomy. Typically covering the 0.3-10.0 keV energy range, CCDs are able to detect photoelectric absorption edges and K shell lines from most abundant metals. New CCDs also offer resolutions of 30-50 (E/dE), which is sufficient to detect lines in hot plasmas and to resolve many lines shaped by dynamical processes in accretion flows. The spectral capabilities of X-ray CCDs have been particularly important in detecting relativistic emission lines from the inner disks around accreting neutron stars and black holes. One drawback of X-ray CCDs is that spectra can be distorted by photon "pile-up", wherein two or mor…

PhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)PhotonSpectrometerAstrophysics::High Energy Astrophysical PhenomenaElectron shellFOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsGeneral Relativity and Quantum Cosmology (gr-qc)General Relativity and Quantum CosmologyRelativistic diskSpectral lineaccretion accretion disks black hole physics instrumentation spectrographs methods analytical X-rays binariesNeutron starSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceEmission spectrumAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaSpectroscopyAstrophysics::Galaxy Astrophysics
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The wide-field imager for IXO: status and future activities

2010

The Wide Field Imager (WFI) of the International X-ray Observatory (IXO) is an X-ray imaging spectrometer based on a large monolithic DePFET (Depleted P-channel Field Effect Transistor) Active Pixel Sensor. Filling an area of 10 x 10 cm2 with a format of 1024 x 1024 pixels it will cover a field of view of 18 arcmin. The pixel size of 100 x 100 μm2 corresponds to a fivefold oversampling of the telescope's expected 5 arcsec point spread function. The WFI's basic DePFET structure combines the functionalities of sensor and integrated amplifier with nearly Fano-limited energy resolution and high efficiency from 100 eV to 15 keV. The development of dedicated control and amplifier ASICs allows for…

X-ray AstronomyImaging spectrometerWide Field ImagerField of viewSettore ING-INF/01 - ElettronicaIntegrated amplifierlaw.inventionTelescopeOpticslawWFIDePFETX-ray SpectroscopyInternational X-ray Observatory; IXO; Wide Field Imager; WFI; X-ray Astronomy; X-ray Spectroscopy; X-ray Imaging; DePFET; Active Pixel SensorPhysicsCMOS sensorActive Pixel SensorsezelePixelSpectrometerbusiness.industryAmplifierIXOInternational X-ray ObservatorybusinessX-ray ImagingSpace Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray
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