Showing papers by "Laura Brenneman published in 2019"
Harvard University1, The Aerospace Corporation2, Massachusetts Institute of Technology3, University of Michigan4, Pennsylvania State University5, Max Planck Society6, Netherlands Institute for Space Research7, University of Iowa8, Saint Mary's University9, University of Erlangen-Nuremberg10, California Institute of Technology11, University of Maryland, College Park12, Washington University in St. Louis13, Columbia University14, Goddard Space Flight Center15, Leibniz Association16, Johns Hopkins University17, University of Leicester18
TL;DR: Arcus provides high-resolution soft X-ray spectroscopy in the 12-50 A bandpass with unprecedented sensitivity, including spectral resolution < 2500 and effective area < 250 cm2 as mentioned in this paper.
Abstract: Arcus provides high-resolution soft X-ray spectroscopy in the 12-50 A bandpass with unprecedented sensitivity, including spectral resolution < 2500 and effective area < 250 cm2. The three top science goals for Arcus are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback, and (3) to explore how stars form and evolve. Arcus uses the same 12 m focal length grazing-incidence Silicon Pore X-ray Optics (SPOs) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. Combined with the high-heritage NGIS LEOStar-2 spacecraft and launched into 4:1 lunar resonant orbit, Arcus provides high sensitivity and high efficiency observing of a wide range of astrophysical sources.
16 citations
Journal Article•
TL;DR: In this paper, the central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, such as the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics, is discussed.
Abstract: This White Paper illustrates the central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics.
10 citations
Journal Article•
TL;DR: X-ray reverberation mapping has emerged as a powerful probe of microparsec scales around AGN, and with high sensitivity detectors, its full potential in echo-mapping the otherwise inaccessible disk-corona at the black hole horizon scale will be revealed as discussed by the authors.
Abstract: X-ray reverberation mapping has emerged as a powerful probe of microparsec scales around AGN, and with high sensitivity detectors, its full potential in echo-mapping the otherwise inaccessible disk-corona at the black hole horizon scale will be revealed.
8 citations
Journal Article•
California Institute of Technology1, Dartmouth College2, National Space Institute3, University of Southampton4, Pennsylvania State University5, University of Washington6, Montana State University7, Harvard University8, Roma Tre University9, Diego Portales University10, European Space Agency11, Georgia Institute of Technology12, University of Cambridge13, Goddard Space Flight Center14, University of Michigan15, University of Erlangen-Nuremberg16, Durham University17, University of Utah18, University of California, Berkeley19
TL;DR: The High-Energy X-ray Probe (HEX-P) is a next-generation high-energy Xray observatory with broadband (2-200 keV) response that has 40 times the sensitivity of any previous mission in the 10-80 keV band as mentioned in this paper.
Abstract: The High-Energy X-ray Probe (HEX-P) is a next-generation high-energy X-ray observatory with broadband (2-200 keV) response that has 40 times the sensitivity of any previous mission in the 10-80 keV band and > 100 times the sensitivity of any previous mission in the 80-200 keV band. With this leap in observational capability, HEX-P will address a broad range of science objectives beyond any planned mission in the hard X-ray bandpass. HEX-P will probe the extreme environments around black holes and neutron stars, map the growth of supermassive black holes, and quantify the effect they have on their environments. HEX-P will resolve the hard X-ray emission from dense regions of our Galaxy to understand the high- energy source populations and investigate dark matter candidate particles through their decay channel signatures. If developed and launched on a timescale similar to Athena, the complementary abilities of the two missions will greatly enhance the Community’s ability to address the important science questions of the hot universe. HEX-P addresses science that is not planned by any flagship-class missions, and is beyond the capability of an Explorer-class mission.
7 citations
Posted Content•
TL;DR: X-ray reverberation mapping has emerged as a powerful probe of microparsec scales around AGN, and with high sensitivity detectors, its full potential in echo-mapping the otherwise inaccessible disk-corona at the black hole horizon scale will be revealed as discussed by the authors.
Abstract: X-ray reverberation mapping has emerged as a powerful probe of microparsec scales around AGN, and with high sensitivity detectors, its full potential in echo-mapping the otherwise inaccessible disk-corona at the black hole horizon scale will be revealed.
3 citations
Posted Content•
TL;DR: In this paper, the breakthrough capabilities of grating spectrometers to detect hidden metals and mass and quantify hot gas flows, turbulence, and rotation around the Milky Way and external galaxies are presented.
Abstract: A large fraction of the baryons and most of the metals in the Universe are unaccounted for. They likely lie in extended galaxy halos, galaxy groups, and the cosmic web, and measuring their nature is essential to understanding galaxy formation. These environments have virial temperatures >10^5.5 K, so the gas should be visible in X-rays. Here we show the breakthrough capabilities of grating spectrometers to 1) detect these reservoirs of hidden metals and mass, and 2) quantify hot gas flows, turbulence, and rotation around the Milky Way and external galaxies. Grating spectrometers are essential instruments for future X-ray missions, and existing technologies provide 50-1500-fold higher throughput compared to current orbiting instruments.
2 citations
Journal Article•
TL;DR: In this article, the authors present why grating spectrometers are essential instruments for future X-ray missions and why they hold critical insights to the processes of galaxy formation in extended group halos, galaxy groups, and the cosmic web.
Abstract: A large fraction of the baryons and most of the metals in the Universe remain unaccounted. Their kinematic signatures hold critical insights to the processes of galaxy formation in extended group halos, galaxy groups, and the cosmic web. We present why grating spectrometers are essential instruments for future X-ray missions.
2 citations
Journal Article•
TL;DR: In this article, it was shown that new X-ray gratings provide far higher sensitivity and resolution, but to use the capabilities, improvements are needed in measurements of wavelengths, radiative and collisional transition rates, as well as ionization and recombination cross sections.
Abstract: New X-ray gratings provide far higher sensitivity and resolution, but to use the capabilities, improvements are needed in measurements of wavelengths, radiative and collisional transition rates, as well as ionization and recombination cross sections. Significant progress also needs to be made in understanding the theoretical atomic physics.
1 citations
Journal Article•
TL;DR: In this article, Timothy Kallman, Manuel Bautista, Gabriele Betancourt-Martinez, Joel Bregman, Laura Brenneman, Nicolás Canizares, Renata Cumbee, Javier Garcia, Joern Wilms, Rob Petre, Jeffrey Smith, Daniel Savin, Randall Smith, Pasquale Temi, Pompili Terzi, Pauline Temi and Brian Williams.
Abstract: Authors: Timothy Kallman1, Manuel Bautista2, Gabriele Betancourt-Martinez3, Joel Bregman4, Laura Brenneman5, Nancy Brickhouse5, Claude Canizares6, Renata Cumbee1, Javier Garcia7, Hans Moritz Günther8, Natalie Hell9, Edmund Hodges-Kluck1, Jelle Kaastra10, Richard Kelley1, Sibasish Laha1, Maurice Leutenegger1, Jon M. Miller4, Frits Paerels11, Rob Petre1, Frederick S. Porter1, Daniel Savin11, Randall Smith5, Pasquale Temi12, Lynne Valencic1, Brian Williams1, Joern Wilms13
Posted Content•
TL;DR: The central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics are discussed in this paper.
Abstract: With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy processes at the very heart of modern astrophysics. This White Paper illustrates the central role of high-energy astrophysics to some of the most pressing astrophysical problems of our time, the formation/evolution of galaxies, the origin of the heavy elements, star and planet formation, the emergence of life on exoplanets, and the search for new physics. We also highlight the new connections that are growing between astrophysicists and plasma physicists. We end with a discussion of the challenges that must be addressed to realize the potential of these connections, including the need for integrated planning across physics and astronomy programs in multiple agencies, and the need to foster the creativity and career aspirations of individual scientists in this era of large projects.