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DTSTART;TZID=America/Los_Angeles:20170323T160000
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DTSTAMP:20260422T224402
CREATED:20170125T103301Z
LAST-MODIFIED:20170125T103301Z
UID:456-1490284800-1490288400@rpm.physics.lbl.gov
SUMMARY:Megan Eckart (NASA) "X-ray Astrophysics Enabled by Microcalorimeters: from Recent Observations to Next-Generation Technologies"
DESCRIPTION:Abstract:\nHigh-resolution imaging spectroscopy in the soft x-ray waveband (0.1-10 keV) is an essential tool for probing the physics of the x-ray universe. Unique line diagnostics available in this waveband allow transformative scientific observations of a wide array of sources. For example\, measurements of turbulence in the intra-cluster medium of galaxy clusters can be used to calibrate hydrodynamic simulations used in cosmology; and measurements of outflow processes from supermassive black holes may identify the key mechanism that regulates the co-evolution of host galaxies and their central black holes. I will introduce the microcalorimeter\, a low-temperature detector capable of x-ray photon counting with high spectral resolution\, and discuss observations of the Perseus Cluster made using our microcalorimeter instrument that launched aboard the Japanese-led Hitomi (Astro-H) mission in 2016. I will discuss our recent advances using transition-edge-sensor (TES) microcalorimeters and identify areas in detector\, readout\, and instrument development that are needed for next-generation instrumentation for space- and laboratory-based experiments. Techniques and challenges will be compared to those of envisaged cryogenic CMB and direct dark matter detection experiments. 
URL:https://rpm.physics.lbl.gov/event/reserved-42/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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