DOCSLIB.ORG

The Orgueil Meteorite (Atlas of Microfossils)

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
The Orgueil Meteorite (Atlas of Microfossils) See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/349917258 The Orgueil meteorite (Atlas of microfossils) Book · October 2020 CITATION READS 1 348 8 authors, including: Richard Brice Hoover Krasavin Eugene The University of Buckingham Joint Institute for Nuclear Research 436 PUBLICATIONS 3,388 CITATIONS 171 PUBLICATIONS 1,121 CITATIONS SEE PROFILE SEE PROFILE Olga Samylina Anton Ryumin Winogradsky Institute Of Microbiology Joint Institute for Nuclear Research 49 PUBLICATIONS 190 CITATIONS 3 PUBLICATIONS 3 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: NAA of Carbonaceous Meteorites View project Radiation DNA damage and DNA double strend break repair and misrepair View project All content following this page was uploaded by Anton Ryumin on 10 March 2021. The user has requested enhancement of the downloaded file. Объединенный институт ядерных исследований Палеонтологический институт им. А.А. Борисяка РАН Институт микробиологии имени С.Н. Виноградского РАН Космический и Ракетный Центр Соединенных Штатов, Хантсвилл, Алабама, США Научный совет РАН по астробиологии МЕТЕОРИТ ОРГЕЙ АТЛАС МИКРОФОССИЛИЙ А.Ю. Розанов, Р.Б. Хувер, Е.А. Красавин, О.С. Самылина, А.К. Рюмин, М.И. Капралов, Е.А. Сапрыкин, А.Н. Афанасьева Объединенный инстиут Палеонтологический институт Институт микробиологии U.S. Space ядерных исследований им. А.А. Борисяка им. С.Н. Виноградского & Rocket Center Российской академии наук Российской академии наук Joint Institute for Nuclear Research A.A. Borissyak Paleontological Institute, Russian Academy of Sciences S.N. Vinogradsky Institute of Microbiology, Russian Academy of Sciences United States Space and Rocket Center, Huntsville, Alabama, USA Scientific Council on Astrobiology, Russian Academy of Sciences THE ORGUEIL METEORITE (ATLAS OF MICROFOSSILS) A. Yu. Rozanov, R. B. Hoover, E. A. Krasavin, O. S. Samyilina, A. K. Ryumin, M. I. Kapralov, E. A. Saprykin, A. N. Afanasyieva Moscow 2020 Объединенный институт ядерных исследований Палеонтологический институт им. А.А. Борисяка РАН Институт микробиологии имени С.Н. Виноградского РАН Космический и Ракетный Центр Соединенных Штатов, Хантсвилл, Алабама, США Научный совет РАН по астробиологии МЕТЕОРИТ ОРГЕИ (АТЛАС МИКРОФОССИЛИЙ) А.Ю. Розанов, Р.Б. Хувер, Е.А. Красавин, О.С. Самылина, А.К. Рюмин, М.И. Капралов, Е.А. Сапрыкин, А.Н. Афанасьева Москва 2020 ISBN 978-5-903825-42-4 УДК 552.63:56 ББК 22.655+28.1 Метеорит Оргей (атлас микрофоссилий). А.Ю. Розанов, РБ. Хувер, Е.А. Красавин, О.С. Самылина, А.К. Рюмин, М.И. Капралов, Е.А. Сапрыкин, А.Н. Афанасьева. Отв. ред. А.Ю. Розанов - М.: ОИЯИ, 2020. 130 с., 5 ил., 40 фототаблиц. На русском и английском языках. Работа посвящена результатам детального бактериальнопалеонтологического исследования метеорита Оргей и представляет собой иллюстрированный ат­ лас микрофоссилий (как прокариот, так и эукариот), обнаруженных на свежих внутренних сколах данного метеорита. Представлено более 60 изображений, полученных с помощью сканирующего электронного микроскопа. ISBN 978-5-903825-42-4 The orgueil meteorite (Atlas of microfosils). A.Yu. Rozanov, R.B. Hoover, E.A. Krasavin, o.S. Samyilina, A.K. Ryumin, M.I. Kapralov, E.A. Saprykin, A.N. Afanasyieva. Red. A.Yu. Rozanov - M.: JINR, 2020. 130 p., 5 il., 40 plates. In Russian and English. The results of thorough bacterialpaleontological study of the orgueil meteorite are presented in this illustrated Atlas of microfossils (both prokaryotic and eukaryotic) found within freshly fractured interior surfaces of the meteorite. More than 60 images obtained with Scanning Electron Microscope are presented. Рецензенты: Фронтасьева Марина Владимировна: канд. физ.-мат. наук Объединенный институт ядерных исследований, Лаборатория нейтронной физики, г. Дубна Цельмович Владимир Анатольевич: канд. физ.-мат. наук Институт физики Земли им. О.Ю. Шмидта РАН, ГО «Борок» ИФЗ РАН, Лаборатория палеомагнетизма и физико-химических свойств горных пород (ОБ-1) ISBN 978-5-903825-42-4 © Коллектив авторов. 2020 Содержание Предисловие 6 I. История падения метеорита Оргей 9 II. Родительское тело метеорита Оргей 11 III. Возраст метеорита Оргей 14 IV. Минеральный состав метеорита Оргей 17 V. Органические соединения в метеорите Оргей 19 VI. История предыдущих исследований микрофоссилий в метеорите Оргей 24 VII. Материал и методы 34 VIII. Описание микрофоссилий в метеорите Оргей 36 Заключение 40 Литература 42 Фототаблицы 49 Contents Introduction 6 I. History of the fall of the orgueil meteorite 9 II. Parent body of the orgueil meteorite 11 III. Age of the orgueil meteorite 14 IV. Mineral composition of the orgueil meteorite 17 V. organic compounds in the orgueil meteorite 19 VI. History of the previous studies of microfossils in the orgueil meteorite 24 VII. Materials and methods 34 VIII. Description of microfossils of the orgueil meteorite 36 Conclusion 40 References 42 Plates 49 Предисловие Introduction Во второй половине ХХ века произош­ In the second half of the XX century, two very ли два очень важных события. Первое - это important events occurred. The first was the report публикация работ Надя и Клауса, в которых of the discovery of the evidence for biogenic hy­ было заявлено об обнаружении в углистых drocarbons (Nagy et al., 1961) and relatively large хондритах CI1 Оргей и Ивуна углеводород­ quantities of “microscopic-sized particles, resem­ ных соединений биогенного происхождения bling fossil algae” in the orgueil and Ivuna CI1 (Nagy et al., 1961) и относительно большого carbonaceous meteorites (Claus and Nagy, 1961). количества «микроскопических частиц, на­ Then, near the end of the century, David S. McKay поминающих фоссилизированные водорос­ and colleagues reported evidence of relic biogenic ли» (Claus, Nagy, 1961). Затем, в самом конце activity (PAH’s and possible biogenic magnetite ХХ столетия, - Дэвид С. Маккей с колле­ and nanofossils) in the Mars meteorite ALH84001 гами сообщили о наличии реликтовой био­ (McKay et al., 1996). At the same time, Richard генной активности (полициклические аро­ B. Hoover at the NASA/Marshall Space Flight Cen­ матические углеводороды и, вероятно, био­ ter (Huntsville) and A. Yu. Rozanov, V. M. Gorlen­ генный магнетит и нанофоссилии) в марси­ ko and S. I. Zhmur at the Paleontological Institute анском метеорите ALH84001 (McKay et al., (RAS, Moscow) reported the detection of microfos­ 1996). Параллельно с этим Ричард Б. Хувер sils in the Murchison CM2 carbonaceous chondrite в NASA/Marshall Space Flight Center (Хан- (Hoover, 1997; Zhmur et al., 1997). тсвилль) и А. Ю. Розанов, В. М. Горленко и The first reports aroused a rather sharp nega­ С. И. Жмур из Палеонтологического института tive reaction, primarily of American astronomers РАН (Москва) сообщили об обнаружении ми- and meteoriticists, who strongly rejected the possi­ крофоссилий в углистом хондрите Мурчисон bility that traces of life could be found in meteorites. (СМ2) (Hoover, 1997; Zhmur et al., 1997). Such a reaction was observed not only in the USA, Первые сообщения вызывали довольно but also in Russia, where particularly negative criti­ резкую негативную реакцию, прежде всего cism came from astronomers, who generally had lit­ американских астрономов и исследователей tle expertise with microbiology, micropaleontology метеоритов, не допускавших даже мысли, что or even meteorites. For more than twenty-five years, следы жизни могут быть обнаружены в мете­ the search for fossil remains in meteorites had been оритах. Такая реакция захлестнула не только considered taboo. Nevertheless, the interest in as- США, но и Россию, где особенно негативная trobiology was growing rapidly. This is evidenced критика исходила от оппонентов, как правило, by the organization of numerous symposia, meet­ не имеющих отношения ни к микробиологии, ings and schools in many countries, and by the pub­ ни к микропалеонтологии. Более чем на двад­ lication of many conference proceedings volumes, цать пять лет занятия поисками фоссильных books and journal articles on astrobiology and the 6 остатков в метеоритах стали считаться непри­ establishment of a Special Section on Instruments, личными. Тем не менее, интерес к астробиоло­ Methods and Missions for Astrobiology by SPIE, гии стремительно рос. Об этом свидетельству­ which holds meetings throughout the world, as well ют организация и проведение в разных странах as by the establishment of the Scientific Council on многочисленных симпозиумов, совещаний и Astrobiology at the Russian Academy of Sciences. школ, публикация значительного количества The modern search for microfossils in the тезисов конференций, книг и статей по вопро­ orgueil CI1 carbonaceous chondrite began in 2004 сам астробиологии и учреждение специальной using orgueil samples graciously provided for Sci­ секции «Инструменты, методы и задачи астро­ entific Research by Dr. Paul P. Sipiera, Planetary биологии» Общества оптики и фотоники SPIE, Studies Foundation, Chicago; Dr. Claude Perron которая проводит заседания по всему миру, а and Dr. Martine Rossignol-Strick of Musée Na­ также учреждение Научного совета по астроби­ tionale d’Histoire Naturelle, Paris (Hoover et al., ологии при Российской академии наук. 2004a,b). During the past 16 years, thousands of Современный период поиска микрофосси- high-resolution SEM images and EDS analyses of лий в углистом хондрите Оргей (CI1) начался в mineral grains and microfossils in-situ in orgueil 2004 г. с фрагментов метеорита, любезно предо­ and many other carbonaceous meteorites have
Load more

Recommended publications
  • Thixotropic Phenomena in Water: Quantitative Indicators of Casimir-Magnetic Transformations from Vacuum Oscillations (Virtual Particles)
    Entropy 2015, 17, 6200-6212; doi:10.3390/e17096200 OPEN ACCESS entropy ISSN 1099-4300 www.mdpi.com/journal/entropy Concept Paper Thixotropic Phenomena in Water: Quantitative Indicators of Casimir-Magnetic Transformations from Vacuum Oscillations (Virtual Particles) Michael A. Persinger Biomolecular Sciences and Behavioural Neuroscience Programs, Laurentian University, Sudbury, ON P3E 2C6, Canada; E-Mail: [email protected] Academic Editor: Kevin H. Knuth Received: 15 July 2015 / Accepted: 28 August 2015 / Published: 7 September 2015 Abstract: The ~1.5 × 10−20 J which is considered a universal quantity and is associated with the movement of protons in water also relates to the ratio of the magnetic moment of a proton divided by its unit charge, multiplied by viscosity and applied over the O-H distance. There is quantitative evidence that thixotropy, the “spontaneous” increased viscosity in water when undisturbed, originates from the transformation of virtual particles or vacuum oscillations to real states through conversion of Casimir-magnetic energies that involve the frequency of the neutral hydrogen line and the upper bound threshold value for intergalactic magnetic fields. The results indicate that ½ of a single electron orbit is real (particle) and the other ½ is virtual (wave). The matter equivalent per s for virtual-to-real states for electrons in 1 mL of water with a neutral pH is consistent with the numbers of protons (H+) and the measured range of molecules in the coherent domains for both width and duration of growth and is similar to widths of intergalactic dust grains from which planets and stars may condense. The de Broglie momentum for the lower boundary of the width of coherent domains multiplied by the fine structure velocity of an electron is concurrent with the quantum when one proton is being removed from another and when the upper boundary of the rest mass of a photon is transformed by the product of velocities for putative “entanglement” and light.
    [Show full text]
  • Origins of Life: Transition from Geochemistry to Biogeochemistry
    December 2016 Volume 12, Number 6 ISSN 1811-5209 Origins of Life: Transition from Geochemistry to Biogeochemistry NITA SAHAI and HUSSEIN KADDOUR, Guest Editors Transition from Geochemistry to Biogeochemistry Staging Life: Warm Seltzer Ocean Incubating Life: Prebiotic Sources Foundation Stones to Life Prebiotic Metal-Organic Catalysts Protometabolism and Early Protocells pub_elements_oct16_1300&icpms_Mise en page 1 13-Sep-16 3:39 PM Page 1 Reproducibility High Resolution igh spatial H Resolution High mass The New Generation Ion Microprobe for Path-breaking Advances in Geoscience U-Pb dating in 91500 zircon, RF-plasma O- source Addressing the growing demand for small scale, high resolution, in situ isotopic measurements at high precision and productivity, CAMECA introduces the IMS 1300-HR³, successor of the internationally acclaimed IMS 1280-HR, and KLEORA which is derived from the IMS 1300-HR³ and is fully optimized for advanced U-Th-Pb mineral dating. • New high brightness RF-plasma ion source greatly improving spatial resolution, reproducibility and throughput • New automated sample loading system with motorized sample height adjustment, significantly increasing analysis precision, ease-of-use and productivity • New UV-light microscope for enhanced optical image resolution (developed by University of Wisconsin, USA) ... and more! Visit www.cameca.com or email [email protected] to request IMS 1300-HR³ and KLEORA product brochures. Laser-Ablation ICP-MS ~ now with CAMECA ~ The Attom ES provides speed and sensitivity optimized for the most demanding LA-ICP-MS applications. Corr. Pb 207-206 - U (238) Recent advances in laser ablation technology have improved signal 2SE error per sample - Pb (206) Combined samples 0.076121 +/- 0.002345 - Pb (207) to background ratios and washout times.
    [Show full text]
  • Programming of Life Prerequisites
    Programming of Life Prerequisites Physical Constants and Properties Requirements By Donald E Johnson ©2011 Published by Big Mac Publishers October, 2011 www.bigmacpublishers.com Sylacauga, AL Printed and bound in the USA 1l j i I I I Programming of Life Prerequisites Physical Constants and Properties Requirements By Donald E Johnson ©2011 Cover photographs ©iStockphoto.com/David Marchal ©iStockphoto.com/loops7 Cover design by Jessie Nilo Design+ Illustration. No part of this publication may be reproduced, stored, or transmitted without permission or as allowed by law. Library of Congress Control Number: 2011940789 Library of Congress subject heading: QH325 Life--Origin BIASC I BASIC Classification Suggestion: sh85133362 Teleology ISBN-13: 978-1-937355-03-6 1.0 Published by Big Mac Publishers, November, 2011 www.bigmacpublishers.com Sylacauga, AL Printed and bound in the USA Table of Contents Introduction v 1 Math Basics: Exponents and Probability 1 2 Mass and Energy: Source and Fine-Tuning 5 3 Chemicals of Life 11 4 Going Where Data Lead 17 5 Epilog 27 Appendices A. Origin of Mass and Energy Scenarios 31 B. Probability Estimates for Life-Support 39 References 53 ii Acknowledgments The author wishes to thank all who encouraged the writing of this book. Much gratitude is also extended to astrophysicist Hugh Ross who gave permission to use the probabilities listed in Appendix B. The author thanks the peer professionals who initially reviewed this book and offered invaluable suggestions for improvements and corrections of errors. This book is a companion to the "Programming of Life" book that highlights the information and computer aspects of life (released in September, 201 0).
    [Show full text]
  • AAS Newsletter (ISSN 8750-9350) Is Amateur
    AASAAS NNEWSLETTEREWSLETTER March 2003 A Publication for the members of the American Astronomical Society Issue 114 President’s Column Caty Pilachowski, [email protected] Inside The State of the AAS Steve Maran, the Society’s Press Officer, describes the January meeting of the AAS as “the Superbowl 2 of astronomy,” and he is right. The Society’s Seattle meeting, highlighted in this issue of the Russell Lecturer Newsletter, was a huge success. Not only was the venue, the Reber Dies Washington State Convention and Trade Center, spectacular, with ample room for all of our activities, exhibits, and 2000+ attendees at Mt. Stromlo Observatory 3 Bush fires in and around the Council Actions the stimulating lectures in plenary sessions, but the weather was Australian Capital Territory spectacular as well. It was a meeting packed full of exciting science, have destroyed much of the 3 and those of us attending the meeting struggled to attend as many Mt. Stromlo Observatory. Up- Election Results talks and see as many posters as we could. Many, many people to-date information on the stopped me to say what a great meeting it was. The Vice Presidents damage and how the US 4 and the Executive Office staff, particularly Diana Alexander, deserve astronomy community can Astronomical thanks from us all for putting the Seattle meeting together. help is available at Journal www.aas.org/policy/ Editor to Retire Our well-attended and exciting meetings are just one manifestation stromlo.htm. The AAS sends its condolences to our of the vitality of the AAS. Worldwide, our Society is viewed as 8 Australian colleagues and Division News strong and vigorous, and other astronomical societies look to us as stands ready to help as best a model for success.
    [Show full text]
  • The Origin of Life on Earth, the Panspermia Hypothesis and Cosmological DNA Synthesis
    The origin of life on Earth, the panspermia hypothesis and cosmological DNA synthesis. Bezverkhniy Volodymyr Dmytrovych, Bezverkhniy Vitaliy Volodymyrovich. Ukraine, e-mail: [email protected] Abstract: The process of the rapid origin of life on Earth is analyzed, taking into account the evolution of our Sun (the beginning of thermonuclear reactions). Given the knowledge about DNA, viruses and the structure of bacteria, it is concluded that the origin of life on Earth was initiated from the outside. Further, using space chemistry, it is shown that spontaneous assembly of DNA/RNA molecules can occur on particles of interstellar and intergalactic dust. Therefore, when favorable conditions are created on the planet, the emergence of life begins rapidly, since the initiators of life are already available from cosmic dust (RNA and DNA molecules). Keywords: origin of life on Earth, cosmological DNA synthesis, interstellar and intergalactic dust, the PAH World Hypothesis, panspermia hypothesis, the Sun's life cycle. INTRODUCTION. Life on Earth was born quickly. Very fast. It’s impossible to believe... Let's make a small digression. When life occurs on Earth, as a rule, the age of the Earth is taken into account, which is logical. But, we will take into account the age of our star. That is, our Sun. And an amazing fact is revealed: when thermonuclear reactions began to take place on the Sun, that is, when it was ignited, life was born in an amazing way on planet Earth. Recall that according to modern models, life on Earth arose about 3.8 - 4.1 billion years ago [1, 2].
    [Show full text]
  • Intergalactic Dust Extinction in Hydrodynamic Cosmological Simulations
    Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 24 May 2010 (MN LATEX style file v2.2) Intergalactic Dust Extinction in Hydrodynamic Cosmological Simulations Ying Zu1?, David H. Weinberg1;2;3, Romeel Dave´4, Mark Fardal5, Neal Katz5, Dusanˇ Keresˇ6, Benjamin D. Oppenheimer7 1Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA 2Center for Cosmology and Astro-Particle Physics, The Ohio State University, Columbus, OH 43210 3Institute for Advanced Study, Princeton, NJ 08540 4Astronomy Department, University of Arizona, Tucson, AZ 85721, USA 5Department of Physics and Astronomy, University of Massachusetts at Amherst, Amherst, MA 98105 6Institute for Theory and Computation, Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, USA 7Leiden Observatory, Leiden University, 2300 RA Leiden, The Netherlands 24 May 2010 ABSTRACT Recently Menard´ et al. (hereafter MSFR) detected a subtle but systematic change in the mean color of quasars as a function of their projected separation from foreground galaxies, extend- ing to comoving separations of ∼ 10h−1Mpc, which they interpret as a signature of redden- ing by intergalactic dust. We present theoretical models of this remarkable observation, using smoothed particle hydrodynamic (SPH) cosmological simulations of a (50h−1Mpc)3 volume. Our primary model uses a simulation with galactic winds and assumes that dust traces the in- tergalactic metals. The predicted galaxy-dust correlation function is similar in form to the galaxy-mass correlation function, and reproducing the MSFR data requires a dust-to-metal mass ratio of 0.24, about half the value in the Galactic ISM. Roughly half of the redden- ing arises in dust that is more than 100h−1kpc from the nearest massive galaxy.
    [Show full text]
  • I. Note on Host Galaxy Dust
    Notes on Host Galaxy Dust E. D. Commins January, 2002 1. Basic facts about dust in our Galaxy. Interstellar dust is an important constituent of our Galaxy, and of other galaxies as well. Galactic dust is mainly confined to the Galactic plane, and its total mass is roughly 1% of the mass of interstellar gas. It consists of sub-micron sized particles, mainly graphite (and/or other forms of carbon such as nanotubes, bucky-balls, etc.), silicates, polycyclic aromatic hydrocarbons (PAHs), and some ices (NH3, H2O). Dust plays an important role in the energy balance of the Galaxy because it absorbs starlight (mainly in the UV and visible) and re-radiates it in the far infra-red (FIR). Perhaps 30% of the total luminosity of the Galaxy is due to this re- radiation. The opacity of dust is generally a decreasing function of wavelength; thus dust causes reddening of transmitted starlight. Dust-induced extinction (from our Galaxy, but more importantly in a host galaxy, and possibly in intergalactic space) could be a significant source of systematic error in observations of supernovae. Dust grains (and in particular, carbon particles) are probably formed in the outer envelopes of red giant stars and/or horizontal branch stars. A typical grain is exposed to many physical processes and undergoes radical transformations during its lifetime [Salpeter 1977]. Grain-grain collisions can cause grains to be shattered, but on the other hand in such collisions, grains can stick together to form larger objects (which in some cases can ultimately become asteroids and planets). Intense stellar radiation can evaporate volatile molecules from grain surfaces.
    [Show full text]
  • Václav Vavrycuk1, Jana Zd'árská2 Cosmic Microwave B
    Conference Cosmology on Small Scales 2020 Michal Kˇr´ıˇzekand Yurii Dumin (Eds.) Institute of Mathematics CAS, Prague COSMIC MICROWAVE BACKGROUND AS THERMAL RADIATION OF INTERGALACTIC DUST? V´aclav Vavryˇcuk1, Jana Zd’´arsk´aˇ 2 1Institute of Geophysics, Czech Academy of Sciences Boˇcn´ı2, CZ-141 00 Prague 4, Czech Republic [email protected] 2Institute of Physics, Czech Academy of Sciences Na Slovance 2, CZ-182 21 Prague 8, Czech Republic [email protected] Abstract: This paper is an interview about an alternative theory of evolution of the Universe with dr. V´aclav Vavryˇcuk from the Institute of Geophysics of the Czech Academy of Sciences. Keywords: Olbers’ paradox, adiabatic expansion, Big Bang nucleosynthesis, thermal radiation PACS: 98.80.-k Cosmic microwave background (CMB) is a strong and uniform radiation coming from the Universe from all directions and is assumed to be relic radiation arising shortly after the Big Bang. It is the most important source of knowledge about the early Universe and is intensively studied by astrophysicists. Arno Penzias and Robert Wilson (see Figure 1) received the Nobel Prize in 1978 for the CMB discovery and George Smoot and John Mather received the Nobel Prize in 2006 for a discovery of the CMB anisotropy. In this interview, we talk with dr. V´aclav Vavryˇcuk from the Institute of Geophysics of the Czech Academy of Sciences about another possi- ble origin of the CMB, and we debate how this alternative theory could affect the currently accepted cosmological model. Jana Zd’´arsk´a:ˇ Most astrophysicists and cosmologists consider the cosmic microwave background (CMB) as relic radiation originating in the epoch shortly after the Big Bang.
    [Show full text]
  • X-Ray Scattering Echoes and Ghost Halos from the Intergalactic Medium: Relation to the Nature of Agn Variability
    X-RAY SCATTERING ECHOES AND GHOST HALOS FROM THE INTERGALACTIC MEDIUM: RELATION TO THE NATURE OF AGN VARIABILITY The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Corrales, Lia. “X-RAY SCATTERING ECHOES AND GHOST HALOS FROM THE INTERGALACTIC MEDIUM: RELATION TO THE NATURE OF AGN VARIABILITY.” The Astrophysical Journal 805, no. 1 (May 15, 2015): 23. © 2015 The American Astronomical Society As Published http://dx.doi.org/10.1088/0004-637x/805/1/23 Publisher IOP Publishing Version Final published version Citable link http://hdl.handle.net/1721.1/98313 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The Astrophysical Journal, 805:23 (9pp), 2015 May 20 doi:10.1088/0004-637X/805/1/23 © 2015. The American Astronomical Society. All rights reserved. X-RAY SCATTERING ECHOES AND GHOST HALOS FROM THE INTERGALACTIC MEDIUM: RELATION TO THE NATURE OF AGN VARIABILITY Lia Corrales MIT Kavli Institute for Astrophysics and Space Research, USA Columbia University, USA Received 2014 December 16; accepted 2015 March 3; published 2015 May 15 ABSTRACT X-ray bright quasars might be used to trace dust in the circumgalactic and intergalactic medium through the phenomenon of X-ray scattering, which is observed around Galactic objects whose light passes through a sufficient column of interstellar gas and dust. Of particular interest is the abundance of gray dust larger than 0.1m m, which is difficult to detect at other wavelengths.
    [Show full text]
  • Anthony N. Aguirre
    _____________________________________ Anthony N. Aguirre Assistant Professor of Physics University of California at Santa Cruz Phone: 831-459-2449 1156 High St. Fax: 831-459-3043 Santa Cruz, CA 95064 Email: [email protected] Date of Birth: July 23, 1973 Citizenship: U.S. EMPLOYMENT ________________________________________________________________ 2007 – present Associate Professor of Physics, University of California at Santa Cruz 2003 – 2007 Assistant Professor of Physics, University of California at Santa Cruz 2000 – 2003 Member, Institute for Advanced Study 1996 – 2000 Graduate Research and Teaching Assistant, Harvard University 1995 Astronomer, Harvard-Smithsonian Center for Astrophysics EDUCATION __________________________________________________________________ 2000 Ph.D., Astronomy, Harvard University 1998 M.S., Astronomy, Harvard University 1995 B.S., Mathematics/Physics, Brown University HONORS AND AWARDS _____________________________________________________ 2005 – 2006 Pre-Tenure Faculty Development Award University of California, Santa Cruz 2004 – 2005 Non-Tenured Faculty Development Award University of California, Santa Cruz 2000 – 2003 Keck Fellowship, Institute for Advanced Study 1999 – 2000 John Parker Merit Scholarship, Harvard University 1998 & 1999 Award for Undergraduate Teaching, Harvard University 1995 Finalist, Leroy Apker Prize for Achievement in Physics Brown University 1995 Bruce Lindsay Award for Physics, Brown University 1994 – 1995 Barry M. Goldwater Scholar, Brown University PROFESSIONAL ACTIVITIES _________________________________________________
    [Show full text]
  • CURRICULUM VITAE Abraham Loeb Field of Research
    CURRICULUM VITAE Abraham Loeb Field of Research: Theoretical Astrophysics and Cosmology Family: Married to Dr. Ofrit Liviatan and father to daughters Klil and Lotem Work Address: Harvard University 60 Garden Street, MS-51 Cambridge, MA 02138, USA Phone: (617) 496-6808; Fax: (617) 495-7093 E-mail: [email protected]; URL: http://cfa-www.harvard.edu/∼loeb/ Academic Degrees 1986 Ph.D. in Physics 1985 M.Sc. in Physics 1983 B.Sc. in Physics and Mathematics The Hebrew University of Jerusalem, Israel Thesis Titles Ph.D.“Particle Acceleration to High Energies and Amplification of Coher- ent Radiation by Electromagnetic Interactions in Plasmas” M.Sc.“Analytical Models for the Evolution of Strong Shock Waves Gener- ated by High Irradiance Lasers in Solids and Fast Spark Discharges” Positions Held 2021– Member of the Center for Astrophysics Executive Board. 2018–2021 Chair of the Board on Physics & Astronomy of the National Academies, USA. 2016-2018 Vice chair of the Board on Physics & Astronomy of the National Academies, USA. 2016 Founding Director of the Black Hole Initiative, Harvard University. 2016– Chair of the Advisory Committee for Breakthrough Starshot, Break- through Prize Foundation. 2015– Affiliate of the Center of Mathematical Sciences and Applications, Harvard University. 1 2015– Science Theory Director for the Breakthrough Initiatives Projects of the Breakthrough Prize Foundation. 2012– Frank B. Baird Jr. Professor of Science, Harvard University. 2011– Chair, Harvard Astronomy department (http://astronomy.fas.harvard.edu/). 2011– Sackler Senior Visiting Professor, School of Physics and Astron- omy, Tel Aviv University. 2007– Director, Institute for Theory and Computation (ITC), Harvard University (http://www.cfa.harvard.edu/itc/).
    [Show full text]
  • Scope and Subject Category Guide
    NASA/SP—2011–7603 NASA Scientific and Technical Information Scope and Subject Category Guide Click here: Press F1 key (Windows) or Help key (Mac) for help December 2011 NASA STI Program ... in Profile Since its founding, NASA has been dedicated CONFERENCE PUBLICATION. to the advancement of aeronautics and space Collected papers from scientific and science. The NASA scientific and technical technical conferences, symposia, information (STI) program plays a key part in seminars, or other meetings sponsored helping NASA maintain this important role. or co-sponsored by NASA. The NASA STI program operates under the SPECIAL PUBLICATION. Scientific, auspices of the Agency Chief Information technical, or historical information from Officer. It collects, organizes, provides for NASA programs, projects, and missions, archiving, and disseminates NASA’s STI. The often concerned with subjects having NASA STI program provides access to the substantial public interest. NASA Aeronautics and Space Database and its public interface, the NASA Technical Reports TECHNICAL TRANSLATION. Server, thus providing one of the largest English-language translations of foreign collections of aeronautical and space science scientific and technical material pertinent to STI in the world. Results are published in both NASA’s mission. non-NASA channels and by NASA in the NASA STI Report Series, which includes the Specialized services also include organizing following report types: and publishing research results, distributing specialized research announcements and feeds, TECHNICAL PUBLICATION. Reports of providing information desk and personal search completed research or a major significant support, and enabling data exchange services. phase of research that present the results of NASA Programs and include extensive data For more information about the NASA STI or theoretical analysis.
    [Show full text]