Science: Planetary Science Outyears Are Notional
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Monte Carlo Simulacija Protojata Galaksija U Cosmos Pregledu Neba
SVEUILITE U ZAGREBU PRIRODOSLOVNO-MATEMATIKI FAKULTET FIZIKI ODSJEK Neven Tomi£i¢ MONTE CARLO SIMULACIJA PROTOJATA GALAKSIJA U COSMOS PREGLEDU NEBA Diplomski rad Zagreb, 2015 SVEUILITE U ZAGREBU PRIRODOSLOVNO-MATEMATIKI FAKULTET FIZIKI ODSJEK SMJER: ISTRAIVAKI Neven Tomi£i¢ Diplomski rad MONTE CARLO SIMULACIJA PROTOJATA GALAKSIJA U COSMOS PREGLEDU NEBA Voditelj diplomskog rada: doc. dr. sc. Vernesa Smol£i¢ Ocjena diplomskog rada: ____________________ Povjerenstvo: 1. _________________________ 2. _________________________ 3. _________________________ Datum polaganja: _____________ Zagreb, 2015 ZAHVALA Zahvalio bih se mentorici doc. dr. sc. Vernesi Smol£i¢, na mentorstvu i voenju kroz ovaj rad. Posebno bih se zahvalio asistentu dipl. ing. Nikoli Baranu za tehni£ku pomo¢ i savjetovanje pri izvedbi simulacija i rada u programskom jeziku IDL. Zahvalio bih se dr. sc. Oskariu Miettinenu i kolegici Niki Jurlin, za pomo¢ i savjetovanje pri analizi protojata. Takoer se zahvaljujem dr. sc. Jacinti Delhaize, mag. phys. Mladenu Novaku i kolegi Kre²imiru Tisani¢u za savjetovanje i pomo¢ pri radu. Zahvalio bih se svojim roditeljima na savjetima za ºivot i za potporu koju mi cijeli ºivot pruºaju na mom putu u znanost. Takoer bih se zahvalio svim svojim profesorima, prija- teljima i kolegama u mom osnovno²kolskom, srednjo²kolskom i fakultetskom obrazovanju, a pogotovo prof. Ankici Ben£ek, prof. Andreji Pehar, prof. Ana-Mariji Kukuruzovi¢ i prof. Josipu Matijevi¢u koji su me usmjeravali prema znanosti. Saºetak Jata tj. skupovi galaksija su veliki virializirani skupovi galaksija. Galaksije do- prinose oko 5% mase jata, unutar-klasterski medij oko 10% mase i tamna tvar do 85% mase. Te strukture su nastale iz protojata galaksija. Protojato je rani oblik jata sa manje galaksija i sa uo£enom ve¢om gusto¢om broja galaksija u odnosu na ostale dijelove promatranog neba. -
Arxiv:2006.00776V1 [Physics.Space-Ph] 1 Jun 2020
manuscript submitted to Geophysical Research Letters Dust impact voltage signatures on Parker Solar Probe: influence of spacecraft floating potential S. D. Bale1,2, K. Goetz3, J. W. Bonnell1, A. W. Case4, C. H. K. Chen5,T. Dudok de Wit6, L. C. Gasque1,2, P. R. Harvey1, J. C. Kasper 7,4, P. J. Kellogg3, R. J. MacDowall8, M. Maksimovic9, D. M. Malaspina10, B. F. Page1,2, M. Pulupa1, M. L. Stevens4, J. R. Szalay11, A. Zaslavsky9 1Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450, USA 2Physics Department, University of California, Berkeley, CA 94720-7300, USA 3School of Physics and Astronomy, University of Minnesota, Minneapolis, 55455, USA 4Smithsonian Astrophysical Observatory, Cambridge, MA 02138 USA 5School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, UK 6LPC2E, CNRS and University of Orleans,´ Orleans,´ France 7Climate and Space Sciences and Engineering, University of Michigan, Ann Arbor, MI 48109, USA 8Solar System Exploration Division, NASA/Goddard Space Flight Center, Greenbelt, MD, 20771 9LESIA, Observatoire de Paris, Universit PSL, CNRS, Sorbonne Universit, Universit de Paris, 5 place Jules Janssen, 92195 Meudon, France 10Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, 80303, USA 11Department of Astrophysical Sciences, Princeton University, Princeton, NJ, 08544, USA Key Points: • The Parker Solar Probe (PSP) FIELDS instrument measures millisecond volt- ages impulses associated with dust impacts • The sign of the largest monopole voltage response is a function of the spacecraft floating potential • These measurements are consistent with models of dynamic charge balance following dust impacts Submitted : June 2, 2020 arXiv:2006.00776v1 [physics.space-ph] 1 Jun 2020 Corresponding author: Stuart D. -
On Parker Solar Probe, NASA Leaves the Driving to Aerojet Rocketdyne
On Parker Solar Probe, NASA Leaves the Driving to Aerojet Rocketdyne August 12, 2018 KENNEDY SPACE CENTER, Fla., Aug. 12, 2018 (GLOBE NEWSWIRE) -- With a big assist from Aerojet Rocketdyne, NASA’s Parker Solar Probe is now on its way to humankind’s closest encounter ever with a star – in this case our solar system’s sun. Parker Solar Probe NASA image Aerojet Rocketdyne provided the full propulsion system on NASA’s Parker Solar Probe, which will venture eight times closer to the Sun than the previous record holderCredit: NASA/Johns Hopkins APL In addition to the RS-68A main engines for the United Launch Alliance Delta IV Heavy rocket that launched the Parker Probe into space, Aerojet Rocketdyne also supplied the RL10B-2 second stage engine and 12 MR-106 reaction control thrusters on the Delta Cryogenic Second Stage, as well as the full propulsion system on the Parker Solar Probe. The nearly 7-year journey will bring the probe to within 6.2 million kilometers of the Sun’s surface. That’s well within the orbit of the Sun’s nearest planet, Mercury, and eight times closer than the previous record holder, the U.S.-German Helios B probe, which made its closest approach in 1976. “Surviving a years-long journey to the corona of the Sun while operating in autonomous mode requires an incredibly high level of reliability,” said Aerojet Rocketdyne CEO and President Eileen Drake. “Aerojet Rocketdyne propulsion plays a critical role in all aspects of the Parker Solar Probe mission, from launch on the Delta IV, to the probe’s safe cruise through space and approach of the Sun’s atmosphere.” The Parker Solar Probe ultimately will dip into the Sun’s corona, carrying instruments to observe and measure the movement and interaction of phenomena including electric and magnetic fields, energetic particles and solar wind. -
The Active Region Source of a Type III Radio Storm Observed by Parker Solar Probe During Encounter 2 Log-Spaced Chunks, Each of 2.56 Mhz Wide
Astronomy & Astrophysics manuscript no. ISSI_E2_Hinode-final ©ESO 2021 February 10, 2021 The active region source of a type III radio storm observed by Parker Solar Probe during Encounter 2 L. Harra1, 2, D. H. Brooks3, S. D. Bale4, C. H. Mandrini5, 6, K. Barczynski1, 2, R. Sharma7, S. T. Badman4, S. Vargas Domínguez8, and M. Pulupa4 1 PMOD/WRC, Dorfstrasse 33 CH-7260 Davos Dorf, Switzerland e-mail: [email protected] e-mail: [email protected] 2 ETH-Zurich, Hönggerberg campus, HIT building, Zürich, Switzerland 3 College of Science, George Mason University, 4400 University Drive, Fairfax, VA 22030 USA e-mail: [email protected] 4 Physics Department and Space Sciences Laboratory, University of California, Berkeley, USA. 94720-7450 e-mail: [email protected] 5 Instituto de Astronomía y Física del Espacio (IAFE), CONICET-UBA, Buenos Aires, Argentina 6 Facultad de Ciencias Exactas y Naturales (FCEN), UBA, Buenos Aires, Argentina e-mail: [email protected] 7 Fachhochschule Nordwestschweiz (FHNW), Bahnhofstrasse 6, 5210 Windisch, Switzerland e-mail: [email protected] 8 Universidad Nacional de Colombia, Observatorio Astronómico Nacional, Bogotá, Colombia e-mail: [email protected] Received September 2020 ABSTRACT Context. To investigate the source of a type III radio burst storm during encounter 2 of NASA’s Parker Solar Probe (PSP) mission. Aims. It was observed that in encounter 2 of NASA’s Parker Solar Probe mission there was a large amount of radio activity, and in particular a noise storm of frequent, small type III bursts from 31st March to 6th April 2019. Our aim is to investigate the source of these small and frequent bursts. -
Delta IV Parker Solar Probe Mission Booklet
A United Launch Alliance (ULA) Delta IV Heavy what is the source of high-energy solar particles. MISSION rocket will deliver NASA’s Parker Solar Probe to Parker Solar Probe will make 24 elliptical orbits an interplanetary trajectory to the sun. Liftoff of the sun and use seven flybys of Venus to will occur from Space Launch Complex-37 at shrink the orbit closer to the sun during the Cape Canaveral Air Force Station, Florida. NASA seven-year mission. selected ULA’s Delta IV Heavy for its unique MISSION ability to deliver the necessary energy to begin The probe will fly seven times closer to the the Parker Solar Probe’s journey to the sun. sun than any spacecraft before, a mere 3.9 million miles above the surface which is about 4 OVERVIEW The Parker percent the distance from the sun to the Earth. Solar Probe will At its closest approach, Parker Solar Probe will make repeated reach a top speed of 430,000 miles per hour journeys into the or 120 miles per second, making it the fastest sun’s corona and spacecraft in history. The incredible velocity trace the flow of is necessary so that the spacecraft does not energy to answer fall into the sun during the close approaches. fundamental Temperatures will climb to 2,500 degrees questions such Fahrenheit, but the science instruments will as why the solar remain at room temperature behind a 4.5-inch- atmosphere is thick carbon composite shield. dramatically Image courtesy of NASA hotter than the The mission was named in honor of Dr. -
NASA Program & Budget Update
NASA Update AAAC Meeting | June 15, 2020 Paul Hertz Director, Astrophysics Division Science Mission Directorate @PHertzNASA Outline • Celebrate Accomplishments § Science Highlights § Mission Milestones • Committed to Improving § Inspiring Future Leaders, Fellowships § R&A Initiative: Dual Anonymous Peer Review • Research Program Update § Research & Analysis § ROSES-2020 Updates, including COVID-19 impacts • Missions Program Update § COVID-19 impact § Operating Missions § Webb, Roman, Explorers • Planning for the Future § FY21 Budget Request § Project Artemis § Creating the Future 2 NASA Astrophysics Celebrate Accomplishments 3 SCIENCE Exoplanet Apparently Disappears HIGHLIGHT in the Latest Hubble Observations Released: April 20, 2020 • What do astronomers do when a planet they are studying suddenly seems to disappear from sight? o A team of researchers believe a full-grown planet never existed in the first place. o The missing-in-action planet was last seen orbiting the star Fomalhaut, just 25 light-years away. • Instead, researchers concluded that the Hubble Space Telescope was looking at an expanding cloud of very fine dust particles from two icy bodies that smashed into each other. • Hubble came along too late to witness the suspected collision, but may have captured its aftermath. o This happened in 2008, when astronomers announced that Hubble took its first image of a planet orbiting another star. Caption o The diminutive-looking object appeared as a dot next to a vast ring of icy debris encircling Fomalhaut. • Unlike other directly imaged exoplanets, however, nagging Credit: NASA, ESA, and A. Gáspár and G. Rieke (University of Arizona) puzzles arose with Fomalhaut b early on. Caption: This diagram simulates what astronomers, studying Hubble Space o The object was unusually bright in visible light, but did not Telescope observations, taken over several years, consider evidence for the have any detectable infrared heat signature. -
IAF SPACE PROPULSION SYMPOSIUM (C4) New Missions Enabled by New Propulsion Technology and Systems (6)
70th International Astronautical Congress 2019 Paper ID: 54982 oral IAF SPACE PROPULSION SYMPOSIUM (C4) New Missions Enabled by New Propulsion Technology and Systems (6) Author: Mr. Steven Vernon Johns Hopkins University Applied Physics Laboratory, United States, [email protected] LAUNCH SYSTEM SOLUTIONS FOR INTERSTELLAR TRAVEL Abstract Building on the experience gained from several successful high launch energy NASA exploration mis- sions, a NASA funded study focused on developing a launch system capable of Interstellar travel in the near term is discussed. The NASA funded Interstellar Probe study managed by Johns Hopkins applied Physics Lab focused on the development a set of launch vehicle and upper stage system solution concepts. The configurations discussed are designed to achieve launch energies significantly above the two previous record setting missions, New Horizons and Parker Solar Probe. The launch system configurations dis- cussed will document of several the very high launch energy solutions explored. With the advent of the NASA Space Launch System (SLS) and its significant lift mass capabilities, coupled to the significant volume available inside the fairing, the SLS system is demonstrated to be particularly well suited to the stacking of one or more upper stages in order to improve and minimize space travel mission durations. The system solutions presented are designed to increase the ultimate launch energies, by a factor of 2-3 times above those achieved for the New Horizons (wet mass = 478 kg, C3 =157.75 km**2/s**2) and Parker Solar Probe (wet mass = 643 kg, C3=154 km**2/s**2) missions. While these two separated Spacecraft launch energy examples were significant engineering achievements, incorporating the Atlas V, 551 and Delta IV Heavy launch systems with unique upper stages, the SLS lift capability configurations presented will be coupled to several Oberth maneuvers and passive and gravity assist trajectories studied. -
The New Heliophysics Division Template
NASA Heliophysics Division Update Heliophysics Advisory Committee October 1, 2019 Dr. Nicola J. Fox Director, Heliophysics Division Science Mission Directorate 1 The Dawn of a New Era for Heliophysics Heliophysics Division (HPD), in collaboration with its partners, is poised like never before to -- Explore uncharted territory from pockets of intense radiation near Earth, right to the Sun itself, and past the planets into interstellar space. Strategically combine research from a fleet of carefully-selected missions at key locations to better understand our entire space environment. Understand the interaction between Earth weather and space weather – protecting people and spacecraft. Coordinate with other agencies to fulfill its role for the Nation enabling advances in space weather knowledge and technologies Engage the public with research breakthroughs and citizen science Develop the next generation of heliophysicists 2 Decadal Survey 3 Alignment with Decadal Survey Recommendations NASA FY20 Presidential Budget Request R0.0 Complete the current program Extended operations of current operating missions as recommended by the 2017 Senior Review, planning for the next Senior Review Mar/Apr 2020; 3 recently launched and now in primary operations (GOLD, Parker, SET); and 2 missions currently in development (ICON, Solar Orbiter) R1.0 Implement DRIVE (Diversify, Realize, Implemented DRIVE initiative wedge in FY15; DRIVE initiative is now Integrate, Venture, Educate) part of the Heliophysics R&A baseline R2.0 Accelerate and expand Heliophysics Decadal recommendation of every 2-3 years; Explorer mission AO Explorer program released in 2016 and again in 2019. Notional mission cadence will continue to follow Decadal recommendation going forward. Increased frequency of Missions of Opportunity (MO), including rideshares on IMAP and Tech Demo MO. -
Paul Hertz NASA Town Hall with Bonus Material
Paul Hertz Dominic Benford Felicia Chou Valerie Connaughton Lucien Cox Jeanne Davis Kristen Erickson Daniel Evans Michael Garcia Ellen Gertsen Shahid Habib Hashima Hasan Douglas Hudgins Patricia Knezek Elizabeth Landau William Latter Michael New Mario Perez Gregory Robinson Rita Sambruna Evan Scannapieco Kartik Sheth Eric Smith Eric Tollestrup NASA Town Hall with bonus material AAS 235th Meeting | January 5, 2020 Paul Hertz Director, Astrophysics Division Science Mission Directorate @PHertzNASA Posted at http://science.nasa.gov/astrophysics/documents 1 2 Spitzer 8/25/2003 Formulation + SMEX/MO (2025), Implementation MIDEX/MO (2028), etc. Primary Ops ] Extended Ops SXG (RSA) 7/13/2019 Webb Euclid (ESA) 2021 WFIRST 2022 Mid 2020s Ariel (ESA) 2028 XMM-Newton Chandra (ESA) TESS 7/23/1999 12/10/1999 4/18/2018 NuSTAR 6/13/2012 Fermi IXPE Swift 6/11/2008 2021 11/20/2004 XRISM (JAXA) SPHEREx 2022 2023 Hubble ISS-NICER GUSTO 4/24/1990 6/3/2017 2021 SOFIA Full Ops 5/2014 + Athena (early 2030s), Revised November 24, 2019 LISA4 (early 2030s) Outline • Celebrate Accomplishments § Mission Milestones • Committed to Improving § Building an Excellent Workforce § Research and Analysis Initiatives • Program Update § Research & Analysis, Technology, Fellowships § ROSES-2020 Preview • Missions Update § Operating Missions and Senior Review § Webb, WFIRST § Other missions • Planning for the Future § FY20 Budget § Project Artemis § Supporting Astro2020 § Creating the Future 5 NASA Astrophysics Celebrate Accomplishments https://www.nasa.gov/2019 7 NASA Astrophysics -
Cosmic Origins Newsletter, September 2017, Vol. 6, No. 2
National Aeronautics and Space Administration Cosmic Origins Newsletter September 2017 Volume 6 Number 2 Summer 2017 Cosmic Origins (COR) Inside this Issue Program Update Summer 2017 Cosmic Origins (COR) Program Update ...............1 Mansoor Ahmed, COR Program Manager Hubble Captures Massive Dead Disk Galaxy that Challenges Susan Neff, COR Program Chief Scientist Theories of Galaxy Evolution .............................................................2 Message from the Astrophysics Division Director .........................3 Welcome to the September 2017 Cosmic Origins (COR) The Origins Space Telescope (OST) Mission Study ..........................4 newsletter. In this issue, we provide updates on several activities The Large Ultraviolet/Optical/Near-IR Telescope Study ...............4 relevant to COR Program objectives. Although some of these Astrophysics Probe Studies ................................................................5 activities are not under the direct purview of the program, they are Cosmic Origins Suborbital Program: Balloon Program – relevant to COR goals; therefore we try to keep you informed about Stratospheric Terahertz Observatory (STO) ....................................7 their progress. Star Formation: Herschel Maps Filaments in Giant Molecular The article byPaul Hertz (Director, NASA Astrophysics) Cloud RCW106 ...................................................................................9 provides an overview of the state of the NASA Astrophysics Webb Status and Progress .................................................................10 -
Astronomy and Astrophysics Advisory Committee for 2017
Director’s Office 933 North Cherry Avenue Steward Observatory P.O. Box 210065 URL: www.as.arizona.edu Tucson, AZ 85721-0065 Telephone: (520) 621-6524 [email protected] March 15, 2018 Dr. France A. Córdova, Director National Science Foundation 2415 Eisenhower Avenue, Suite 19000 Alexandria, VA 22314 Mr. Robert M. Lightfoot, Jr., Acting Administrator Office of the Administrator NASA Headquarters Washington, DC 20546-0001 Mr. Richard Perry, Secretary of Energy U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 The Honorable John Thune, Chairman Committee on Commerce, Science and Transportation United States Senate Washington, DC 20510 The Honorable Lisa Murkowski, Chairwoman Committee on Energy & Natural Resources United States Senate Washington, DC 20510 The Honorable Lamar Smith, Chairman Committee on Science, Space and Technology United States House of Representatives Washington, DC 20515 Dear Dr. Córdova, Mr. Lightfoot, Secretary Perry, Chairman Thune, Chairwoman Murkowski, and Chairman Smith: I am pleased to transmit to you the annual report of the Astronomy and Astrophysics Advisory Committee for 2017. The Astronomy and Astrophysics Advisory Committee was established under the National Science Foundation Authorization Act of 2002 Public Law 107-368 to: (1) assess, and make recommendations regarding, the coordination of astronomy and astrophysics programs of the Foundation and the National Aeronautics and Space Administration, and the Department of Energy; Arizona’s First University – Since 1885 Dr. -
JL Pickering and John Bisney Authors of Picturing Apollo 11
J.L. Pickering and John Bisney authors of Picturing Apollo 11: Rare Views and Undiscovered Moments You were both part of the generation who witnessed the launch of Apollo 11. What was it like to see Neil Armstrong and Buzz Aldrin step onto the moon’s surface? JL: It was mesmerizing. I had already been following the space program very closely for a few years, so knowing the players and equipment so well made it more exciting. It seems just as amazing 50 years later. John: I was fortunate enough to have attended the launch, and like the rest of the country (and the world), I was also paying very close attention. I watched the landing with my parents on our black-and- while TV, which was fine as this first landing didn’t have a color camera. I wish we had as many media outlets back then as we do now, which could have brought us even more information! What would you say to the people who believe the moon landing was a hoax? JL: The favorite reply to this nonsense came from Apollo 16 astronaut Charles Duke, who replied, “We've been to the moon nine times. If we faked it, why did we fake it nine times?” It seems to me that most non-believers are younger in age and were not around at the time the Apollo missions were taking place. I guess these young folks just cannot fathom such an accomplishment. 400,000 people worked on the Apollo program. Seems like it would have been difficult to keep faked moon landings a secret.