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2020 July 09 Dr. Paul Hertz Astrophysics Director Science
2020 July 09 Dr. Paul Hertz Astrophysics Director Science Missions Directorate National Aeronautics and Space administration (NASA) Dear Paul, The NASA Astrophysics Advisory Committee (APAC) had its Summer meeting on 2020 June 23-24. Due to the COVID-19 pandemic and related NASA operational and travel restriction (Stage 4), the entire two-days of the meeting where conducted virtually using WebExtm videoconferencing technology accompanied by dial-in phone lines. The following members of the APAC attended the meeting: Kelly Holley-Bockelman, Laura Brenneman, John Conklin (Vice Chair), Asantha Cooray, Massimiliano Galeazzi, Jessica Gaskin, Hashima Hasan (APAC Executive Secretary), William Jones, Suvrath Mahadevan, Margaret Meixner, Michael Meyer, Leonidas Moustakas, Lucianne Walkowitz, and Chick Woodward (APAC Chair). Public lines were opened, and Dr. Hasan began the meeting by welcoming all the APAC members, and explaining its purpose. Dr. Hasan reminded APAC members who had conflicts of interest with specific topics on the agenda that as conflicted members they were allowed to listen to the presentation but could not participate in the committee’s discussion. Dr. Hasan then reviewed the Federal Advisory Committee Act (FACA) rules. Dr. Woodward then welcomed the members to the meeting, outlined the agenda, and reiterated some of the FACA and conflict of interest rules. APAC members proceeded to introduce themselves. The agenda consisted of the following presentations: • Astrophysics Division Update – Paul Hertz • State of the Profession – Chick Woodward and the APAC Committee • ExoPAG, COPAG, and PhysPAG reports – Michael Meyer, Margaret Meixner, Graca Rocha • SOFIA update – Margaret Meixner, Naseem Rangwala • James Webb update – Eric Smith • ESCAPE update – Kevin France • Athena update – Rob Petre • GUSTO update – Chris Walker • COSI update – John Tomsick • CASE/ARIEL update – Mark Swain • Science Activation update – Kristen Erickson The APAC thanks all the presenters for their time and efforts to provide crisp and informative presentations. -
Table of Contents
AAS Newsletter September/October 2012, Issue 166 - Published for the Members of the American Astronomical Society Table of Contents 2 President’s Column 17 Committee on the Status of Women in 4 From the Executive Office Astronomy 5 What Makes an Astronomy Story 18 News from NSF Division of Astronomical Newsworthy? Sciences (AST) 6 Journals Update 20 JWST Update 9 Secretary's Corner 21 HAD News 9 Council Actions 21 Honored Elsewhere 10 The AAS Heeds the Call of the Wild 22 Announcements 16 Committee on Employment 23 Calendar of Events 25 Washington News A A S American Astronomical Society AAS Officers President's Column David J. Helfand, President Debra M. Elmegreen, Past President David J. Helfand, [email protected] Nicholas B. Suntzeff, Vice-President Edward B. Churchwell, Vice-President Paula Szkody, Vice-President Hervey (Peter) Stockman, Treasurer G. Fritz Benedict, Secretary Anne P. Cowley, Publications Board Chair Edward E. Prather, Education Officer At 1:32AM Eastern time on 6 Councilors August, the Mars Science Laboratory Bruce Balick Nancy S. Brickhouse and its charmingly named rover, Eileen D. Friel Curiosity, executed a perfect landing Edward F. Guinan Todd J. Henry in Gale Crater. President Obama Steven D. Kawaler called the highly complex landing Patricia Knezek Robert Mathieu procedure “an unprecedented feat of Angela Speck technology that will stand as a point Executive Office Staff of pride far into the future.” While Kevin B. Marvel, Executive Officer we certainly hope Curiosity’s lifetime Tracy Beale, Registrar & Meeting Coordinator Chris Biemesderfer, Director of Publishing on Mars is a long one, we must all Sherri Brown, Membership Services continue to make the case that we Coordinator Kelly E. -
Gravitational Time Delay Effects on Cosmic Microwave Background Anisotropies
PHYSICAL REVIEW D, VOLUME 63, 023504 Gravitational time delay effects on cosmic microwave background anisotropies Wayne Hu* Institute for Advanced Study, Princeton, New Jersey 08540 and Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637 Asantha Cooray† Department of Astronomy and Astrophysics, University of Chicago, Chicago, Illinois 60637 ͑Received 2 August 2000; published 18 December 2000͒ We study the effect of gravitational time delay on the power spectra and bispectra of the cosmic microwave background ͑CMB͒ temperature and polarization anisotropies. The time delay effect modulates the spatial surface at recombination on which temperature anisotropies are observed, typically by ϳ1 Mpc. While this is a relatively large shift, its observable effects in the temperature and polarization fields are suppressed by geometric considerations. The leading order effect is from its correlation with the closely related gravitational lensing effect. The change to the temperature-polarization cross power spectrum is of order 0.1% and is hence comparable to the cosmic variance for the power in the multipoles around lϳ1000. While unlikely to be extracted from the data in its own right, its omission in modeling would produce a systematic error comparable to this limiting statistical error and, in principle, is relevant for future high precision experiments. Contributions to the bispectra result mainly from correlations with the Sachs-Wolfe effect and may safely be neglected in a low density universe. DOI: 10.1103/PhysRevD.63.023504 PACS number͑s͒: 98.80.Es, 95.85.Nv I. INTRODUCTION small effects can accumulate along the path. Indeed it is well known that the gravitational lensing of CMB photons has a In order that the full potential of anisotropies in the cos- substantial effect on the power spectrum of the anisotropies mic microwave background ͑CMB͒ temperature and polar- ͓11,12͔. -
Proceedings of Spie
PROCEEDINGS OF SPIE SPIEDigitalLibrary.org/conference-proceedings-of-spie Overview of the Origins Space telescope: science drivers to observatory requirements Margaret Meixner, Lee Armus, Cara Battersby, James Bauer, Edwin Bergin, et al. Margaret Meixner, Lee Armus, Cara Battersby, James Bauer, Edwin Bergin, Asantha Cooray, Jonathan J. Fortney, Tiffany Kataria, David T. Leisawitz, Stefanie N. Milam, Klaus Pontoppidan, Alexandra Pope, Karin Sandstrom, Johannes G. Staguhn, Kevin B. Stevenson, Kate Y. Su, Charles Matt Bradford, Dominic Benford, Denis Burgarella, Sean Carey, Ruth C. Carter, Elvire De Beck, Michael J. Dipirro, Kimberly Ennico-Smith, Maryvonne Gerin, Frank P. Helmich, Lisa Kaltenegger, Eric. E. Mamajek, Gary Melnick, Samuel Harvey Moseley, Desika Narayanan, Susan G. Neff, Deborah Padgett, Thomas L. Roellig, Itsuki Sakon, Douglas Scott, Kartik Sheth, Joaquin Vieira, Martina Wiedner, Edward Wright, Jonas Zmuidzinas, "Overview of the Origins Space telescope: science drivers to observatory requirements," Proc. SPIE 10698, Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, 106980N (24 July 2018); doi: 10.1117/12.2312255 Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States Downloaded From: https://www.spiedigitallibrary.org/conference-proceedings-of-spie on 23 Aug 2019 Terms of Use: https://www.spiedigitallibrary.org/terms-of-use Overview of the Origins Space Telescope: Science Drivers to Observatory Requirements Margaret Meixnera,b,c, Lee Armusd, Cara Battersbye, James Bauerf, Edwin Berging, Asantha Coorayh, Jonathan J. Fortneyi, Tiffany Katariaj, David T. Leisawitzc, Stefanie N. Milamc, Klaus Pontoppidana, Alexandra Popek, Karin Sandstroml, Johannes G. Staguhnb,c, Kevin B. Stevensona, Kate Y. Sum, Charles Matt Bradfordj, Dominic Benfordn, Denis Burgarellao, Sean Careyd, Ruth C. -
Probes of Cosmological Structure and Galaxy Evolution Edited by John S
Cambridge University Press 978-0-521-14352-3 - Clusters of Galaxies: Probes of Cosmological Structure and Galaxy Evolution Edited by John S. Mulchaey, Alan Dressler and Augustus Oemler Frontmatter More information Clusters of Galaxies Probes of Cosmological Structure and Galaxy Evolution Clusters of galaxies are the largest and most massive collapsed systems in the universe, and as such they are valuable probes of cosmological structure and galaxy evolution. The advent of extensive galaxy surveys, large ground-based facilities, space-based missions such as HST, Chandra,andXMM-Newton and detailed numerical simulations makes now a particularly exciting time to be involved in this field. The review papers in this volume span the full range of current research in this area, including theoretical expectations for the growth of structure, survey techniques to identify clusters, metal production and the intracluster medium, galaxy evolution in the cluster environment and group–cluster connections. With contributions from leading authorities in the field, this volume is appropriate both as an introduction to this topic for physics and astronomy graduate students, and as a reference source for professional research astronomers. JOHN S. MULCHAEY’s research has focused on groups of galaxies. In 1993, he provided some of the strongest evidence to date that galaxy groups are dominated by dark matter. More recently he has played an important role in the discovery and study of “fossil groups,” massive systems that contain very few galaxies. ALAN DRESSLER has made many fundamental contributions to the study of large-scale structure in the Universe over the last 30 years. Recently, he participated in the MORPHS project, using Hubble Space Telescope images to show that bursts of star formation were much more common in galaxies 5 billion years ago than they are today. -
Travelling Back Through Time COORAYDR ASANTHA
Travelling back through time DR ASANTHA COORAY With Drs Julie Wardlow and Joseph Smidt from his research group, Professor Asantha Cooray describes the areas of study by which they are seeking to expand knowledge of far distant galaxies and star formation Can you begin by outlining your research goals? Cooray: The fi rst goal for my team is to search for the fi rst galaxies in the distant, early Universe. The fi rst galaxies are expected to be small in size and mass compared to later ones and their distance at almost the edge of the observable Universe makes them hard to see individually with existing observatories. So we look for signals in the sky that suggest their presence through aggregate effects, such as small variations in the total light emitted by them. Such searches for fi rst galaxies are best done at short infrared (like a galaxy), a foreground mass (such as wavelengths in the electromagnetic spectrum. another galaxy, or a cluster of galaxies) and A second research goal is to study the dust- our telescopes on Earth. The light from the enshrouded star formation in distant galaxies. background source has to pass through, or Since optical light is absorbed by dust, such very close to, the foreground mass in order observations are best done at long infrared to reach us. However, as Einstein theorised, wavelengths again from space. Why is there a need to investigate zodiacal the path that light takes is affected by the dust cloud? How does the Zodiacal dust, intervening mass, in much the same way as How will infrared wavelengths further Extragalactic Background and Reionisation light is defl ected by the lens in spectacles. -
Heterodyne Receiver for Origins
Heterodyne Receiver for Origins a, b c Martina C. Wiedner , * Susanne Aalto, Edward G. Amatucci , d e f g Andrey Baryshev, Cara Battersby , Victor Belitsky, Edwin A. Bergin, h c i j Bruno Borgo, Ruth C. Carter, Emmanuel Caux , Asantha Cooray, c b a f James A. Corsetti, Elvire De Beck , Yan Delorme, Vincent Desmaris, c k l Michael J. DiPirro, Brian Ellison , Anna M. Di Giorgio, m n a Martin Eggens , Juan-Daniel Gallego , Maryvonne Gerin , o p m,q Paul F. Goldsmith , Christophe Goldstein, Frank Helmich , r s t,u Fabrice Herpin , Richard E. Hills , Michiel R. Hogerheijde , v m m a Leslie K. Hunt , Willem Jellema , Geert Keizer, Jean-Michel Krieg, w x p c Gabby Kroes, Philippe Laporte, André Laurens, David T. Leisawitz , a,o c o Dariusz C. Lis , Gregory E. Martins, Imran Mehdi, c,y,z aa c Margaret Meixner, Gary Melnick, Stefanie N. Milam , z h ab David A. Neufeld, Napoléon Nguyen Tuong, René Plume, y r Klaus M. Pontoppidan , Benjamin Quertier-Dagorn, ac,ad c,z aa Christophe Risacher , Johannes G. Staguhn , Edward Tong, ae ac Serena Viti, Friedrich Wyrowski, and † The Origins Space Telescope Mission Concept Study Team aLaboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères (LERMA), Observatoire de Paris, Université Paris Sciences & Lettres (PSL) Centre National de la Recherche Scientifique (CNRS), Sorbonne Université, Paris, France bChalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, Onsala, Sweden cNASA Goddard Space Flight Center, Greenbelt, Maryland, United -
Astro2020 Science White Paper Probing Feedback in Galaxy Formation with Millimeter-Wave Observations
Astro2020 Science White Paper Probing Feedback in Galaxy Formation with Millimeter-wave Observations Thematic Areas: Planetary Systems Star and Planet Formation Formation and Evolution of Compact Objects 3 Cosmology and Fundamental Physics Stars and Stellar Evolution Resolved Stellar Populations and their Environments 3 Galaxy Evolution Multi-Messenger Astronomy and Astrophysics Principal Authors: Names: Nicholas Battaglia, J. Colin Hill Institutions: Cornell University, Institute for Advanced Study Emails: [email protected], [email protected] Phones: (607)-255-3735, (509)-220-8589 Co-authors: Stefania Amodeo (Cornell), James G. Bartlett (APC/U. Paris Diderot), Kaustuv Basu (Uni- versity of Bonn), Jens Erler (University of Bonn), Simone Ferraro (Lawrence Berkeley Na- tional Laboratory), Lars Hernquist (Harvard), Mathew Madhavacheril (Princeton), Matthew McQuinn (University of Washington), Tony Mroczkowski (European Southern Observatory), Daisuke Nagai (Yale), Emmanuel Schaan (Lawrence Berkeley National Laboratory), Rachel Somerville (Rutgers/Flatiron Institute), Rashid Sunyaev (MPA), Mark Vogelsberger (MIT), Jessica Werk (University of Washington) Endorsers: James Aguirre (University of Pennsylvania), Zeeshan Ahmed (SLAC), Marcelo Alvarez arXiv:1903.04647v1 [astro-ph.CO] 11 Mar 2019 (UC–Berkeley), Daniel Angles-Alcazar (Flatiron Institute), Chetan Bavdhankar (National Center for Nuclear Physics), Eric Baxter (University of Pennsylvania), Andrew Benson (Carnegie Observatories), Bradford Benson (Fermi National Accelerator Laboratory/ Uni- versity of Chicago), Paolo de Bernardis (Sapienza Università di Roma), Frank Bertoldi (Uni- versity of Bonn), Fredirico Bianchini (University of Melbourne), Colin Bischoff (University of Cincinnati), Lindsey Bleem (Argonne National Laboratory/KICP), J. Richard Bond (Uni- versity of Toronto/ CITA), Greg Bryan (Columbia/Flatiron Institute), Erminia Calabrese (Cardiff), John E. Carlstrom (University of Chicago/Argonne National Laboratory/KICP), Joanne D. -
Astro2010 Progress Report
Astro2010 Progress Report Roger Blandford KIPAC Stanford Chair, Astro2010 (http://sites.nationalacademies.org/bpa/BPA_049810) Overview The three pillars of the survey Astro2010: Science Frontiers Astro2010: State of the Profession / Infrastructure Astro2010: Activities / Program Prioritization Some features of Astro2010 Unprecedented community buy in to process Include unstarted projects from AANM Improved cost, readiness, risk assessment Increased international and private collaboration Changing economic political background HEPAP 22 v 2009 2 Executive Committee, NRC Staff . Roger Blandford Chair, Astro 2010 . Martha Haynes Chair, Science . John Huchra . Marcia Rieke . Lynne Hillenbrand . NRC: Staff Michael Moloney. BPA/SSB Liaison Responsibility for managing process, communicating with community 7 bulletins HEPAP 22 v 2009 Committee on Astro2010 Roger Blandford, Chair, Stanford University Lynne Hillenbrand, Executive Officer, California Institute of Technology Subcommittee on Science Martha P. Haynes, Vice Chair – Science Frontiers, Cornell University Lars Bildsten, University of California, Santa Barbara John E. Carlstrom, The University of Chicago Fiona A. Harrison, California Institute of Technology Timothy M. Heckman, Johns Hopkins University Jonathan I. Lunine, University of Arizona Juri Toomre, University of Colorado at Boulder BPA, SSB Liaisons Scott D. Tremaine, Institute for Advanced Study DOE, NASA, NSF Subcommittee on State of the Profession John P. Huchra, Vice Chair – State of the Profession, Harvard-University Debra M. Elmegreen, Vassar College Joshua Frieman, Fermi National Accelerator Laboratory Robert C. Kennicutt, Jr., University of Cambridge Dan McCammon, University of Wisconsin-Madison Neil de Grasse Tyson, American Museum of Natural History Subcommittee on Programs Marcia J. Rieke, Vice Chair – Program Prioritization, University of Arizona Steven J. Battel, Battel Engineering Claire E. Max, University of California, Santa Cruz Steven M. -
L7 Measuring Angular Diameter Distances
The Astrophysical Journal, 557:L7–L10, 2001 August 10 ൴ ᭧ 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A. MEASURING ANGULAR DIAMETER DISTANCES THROUGH HALO CLUSTERING Asantha Cooray,1,2 Wayne Hu,1 Dragan Huterer,3 and Michael Joffre1 Received 2001 May 7; accepted 2001 July 13; published 2001 July 20 ABSTRACT Current and upcoming wide-field surveys for weak gravitational lensing and the Sunyaev-Zeldovich effect will generate mass-selected catalogs of dark matter halos with internal or follow-up photometric redshift information. Using the shape of the linear power spectrum as a standard ruler that is calibrated by cosmic microwave background 2 14 measurements, we find that a survey of 4000 deg and a mass threshold of 10 M, can be used to determine the comoving angular diameter distance as a function of redshift. In principle, this test also allows an absolute calibration of the distance scale and measurement of the Hubble constant. This test is largely insensitive to the details of halo mass measurements, mass function, and halo bias. Determination of these quantities would further allow a measurement of the linear growth rate of fluctuations. Subject headings: cosmology: theory — large-scale structure of universe On-line material: color figures 1. INTRODUCTION to uncertainties in the mass function and the relationship be- tween the halo masses and the actual observables, e.g., the SZ A number of observational efforts are now underway or temperature decrement or lensing aperture mass. The bias of being planned to image the large-scale structure of the universe the halos is scale-dependent only on small (nonlinear) scales spanning a range of redshifts. -
Opening New Horizons for Scientific Research
SPE TRA THE NEWSLETTER OF THE CARNEGIE INSTITUTION (SUMMER 2002 Opening New Horizons for Scientific Research INSIDE Trustee News 3 Telescopes for Biologists? 3 Carnegie Welcomes Three New Trustees 3 [PAGE 7] [PAGE 10] It’s Official! 4 Shocking Experience in Planetary Formation 5 The All-Carnegie Symposium: A Science Sampler 6 Constructing the Earth 7 Energy and Materials for the Start of Life 8 The Evolving Planet 9 The Continuity of Life 10 Broad Branch Road Gets a New Look 11 Forensics, First Light, and Fresh Fields Foods 11 First New Staff Member at Global Ecology 11 In Brief 12 A Gift of Cosmic Importance 16 Capital Science Lectures 2002-2003 16 [PAGE 9] • • • • • • DEPARTMENT DEPARTMENT DEPARTMENT THE GEOPHYSICAL CASE/ OF PLANT OF TERRESTRIAL OF EMBRYOLOGY OBSERVATORIES LABORATORY FIRST LIGHT BIOLOGY MAGNETISM 2) Women in Science How Carnegie Compares Ninety-eight years ago—16 years before women won the right to vote—the fledgling Carnegie Institution awarded its first grant to a woman scientist. Her name was Nettie Stevens. Interestingly, Stevens, a biologist, studied gender differences. Her work revolu- tionized our notion of what determines sex by showing that the X and Y chromosomes are involved, changing conventional thinking that environment was the cause. Since that time, Carnegie has fostered the genius of a succession of extraordinary women—geneticists Barbara McClintock and Nina Fedoroff, embryologist Elizabeth Ramsey, archaeologist Anna Shepard, and astronomer Vera Rubin, to name a few. In 2001, the National Research Council issued a report about women scientists and engineers in the workforce. It caught my eye, and I wondered how Carnegie compared with the national figures. -
Not Yet Imagined: a Study of Hubble Space Telescope Operations
NOT YET IMAGINED A STUDY OF HUBBLE SPACE TELESCOPE OPERATIONS CHRISTOPHER GAINOR NOT YET IMAGINED NOT YET IMAGINED A STUDY OF HUBBLE SPACE TELESCOPE OPERATIONS CHRISTOPHER GAINOR National Aeronautics and Space Administration Office of Communications NASA History Division Washington, DC 20546 NASA SP-2020-4237 Library of Congress Cataloging-in-Publication Data Names: Gainor, Christopher, author. | United States. NASA History Program Office, publisher. Title: Not Yet Imagined : A study of Hubble Space Telescope Operations / Christopher Gainor. Description: Washington, DC: National Aeronautics and Space Administration, Office of Communications, NASA History Division, [2020] | Series: NASA history series ; sp-2020-4237 | Includes bibliographical references and index. | Summary: “Dr. Christopher Gainor’s Not Yet Imagined documents the history of NASA’s Hubble Space Telescope (HST) from launch in 1990 through 2020. This is considered a follow-on book to Robert W. Smith’s The Space Telescope: A Study of NASA, Science, Technology, and Politics, which recorded the development history of HST. Dr. Gainor’s book will be suitable for a general audience, while also being scholarly. Highly visible interactions among the general public, astronomers, engineers, govern- ment officials, and members of Congress about HST’s servicing missions by Space Shuttle crews is a central theme of this history book. Beyond the glare of public attention, the evolution of HST becoming a model of supranational cooperation amongst scientists is a second central theme. Third, the decision-making behind the changes in Hubble’s instrument packages on servicing missions is chronicled, along with HST’s contributions to our knowledge about our solar system, our galaxy, and our universe.