Resources on How the Sun Relates to Earth
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Shock Connectivity and the Late Cycle 24 Solar Energetic Particle Events in July and September 2017
Shock Connectivity and the Late Cycle 24 Solar Energetic Particle Events in July and September 2017 J.G. Luhmann1, M.L. Mays2, Yan Li1, C.O. Lee1, H. Bain3, D. Odstrcil4, R.A. Mewaldt5, C.M.S. Cohen5, D. Larson1, Gordon Petrie6 1Space Sciences Laboratory, University of California, Berkeley. 2CCMC, NASA Goddard Space Flight Center. 3NOAA Space Weather Prediction Center. 4George Mason University. 5California Institute of Technology. 6NSO. Corresponding author: Janet Luhmann ([email protected]) Key Points: Observer shock connectivity explains the SEP observations during the July and September 2017 events. The July and September 2017 solar and SEP events had similar characteristics due to similar source region and eruptions. The July and September 2017 events seemed to arise in conjunction with the appearance of a pseudostreamer, a possible alternate ICME source. This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1029/2018SW001860 © 2018 American Geophysical Union. All rights reserved. Abstract As solar activity steadily declined toward the cycle 24 minimum in the early months of 2017, the expectation for major Solar Energetic Particle (SEP) events diminished with the sunspot number. It was thus surprising (though not unprecedented) when a new, potentially significant active region rotated around the East limb in early July that by mid-month was producing a series of coronal eruptions, reaching a crescendo around July 23. This series, apparently associated with the birth of a growing pseudostreamer, produced the largest SEP event(s) seen since the solar maximum years. -
The Van Allen Probes' Contribution to the Space Weather System
L. J. Zanetti et al. The Van Allen Probes’ Contribution to the Space Weather System Lawrence J. Zanetti, Ramona L. Kessel, Barry H. Mauk, Aleksandr Y. Ukhorskiy, Nicola J. Fox, Robin J. Barnes, Michele Weiss, Thomas S. Sotirelis, and NourEddine Raouafi ABSTRACT The Van Allen Probes mission, formerly the Radiation Belt Storm Probes mission, was renamed soon after launch to honor the late James Van Allen, who discovered Earth’s radiation belts at the beginning of the space age. While most of the science data are telemetered to the ground using a store-and-then-dump schedule, some of the space weather data are broadcast continu- ously when the Probes are not sending down the science data (approximately 90% of the time). This space weather data set is captured by contributed ground stations around the world (pres- ently Korea Astronomy and Space Science Institute and the Institute of Atmospheric Physics, Czech Republic), automatically sent to the ground facility at the Johns Hopkins University Applied Phys- ics Laboratory, converted to scientific units, and published online in the form of digital data and plots—all within less than 15 minutes from the time that the data are accumulated onboard the Probes. The real-time Van Allen Probes space weather information is publicly accessible via the Van Allen Probes Gateway web interface. INTRODUCTION The overarching goal of the study of space weather ing radiation, were the impetus for implementing a space is to understand and address the issues caused by solar weather broadcast capability on NASA’s Van Allen disturbances and the effects of those issues on humans Probes’ twin pair of satellites, which were launched in and technological systems. -
Volume 36 March 2007 Number 3 from the Director
The Official Publication of the Amateur Astronomers Association of Princeton Director Treasurer Program Chairman Rex Parker Brian VanLiew Ken Kremer Assistant Director Secretary Editors John Miller Ludy D’Angelo Bryan Hubbard and Ira Polans Volume 36 March 2007 Number 3 From the Director presentation on March 30, he will share some of this experience through photos and video, including his most recent expedition to Libya AAAP Meeting March 13 (8:00 Peyton Hall). Our astronomical in 2006. Information about future solar eclipses visible from Princeton excursion heads next to an exciting new area with a novel will be distributed at this event, at which the public is also welcome presentation on Plasma Propulsion and the Exploration of (bring your kids too!). For more information, please go to the AAAP Space, by Dr. Edgar Choueiri, Director of Princeton's Electric website or contact Ken Kremer. Propulsion and Plasma Dynamics Lab (EPPDyL). Dr Choueiri is Associate Professor in the Mechanical and Aerospace Observing events coming up. The Observatory Committee and other Engineering (MAE) Dept at Princeton, and also Assoc. Faculty in members have been doing a great job organizing and getting the Astrophysics. With his deep background in plasma and space telescope/mount upgrade completed for the next observing season. At physics and applied mathematics, Dr Choueiri is a leading expert the recent Board meeting Feb 1, we decided to improve public outreach and proponent of advances in propulsion science and technology. (and member access) at the Observatory by scheduling every Friday In his talk he will describe from firsthand knowledge what this night in April-October as public observing nights. -
Living with a Star Targeted Research and Technology (TR&T) Steering
Living with a Star Targeted Research and Technology (TR&T) Steering Committee Steering Committee Members: Liaison Members: Co-Chair: Eftyhia Zesta (GSFC) Terry Onsager (NOAA) Co-Chair: Mark Linton (NRL) Rodney Vierick (NOAA) Yuri Shprits (MIT) Ilia Roussev (NSF) Scott McIntosh (NCAR / HAO) Vyacheslav Lukin (NSF) Nathan Schwadron (UNH ex-chair) Masha Kuznetsova (GSFC / Community Karel Schrijver (Lockheed Martin) Coordinated Modeling Center) Jim Slavin (U Michigan) Mona Kessel (NASA HQ / Chadi Salem (UC Berkeley) Van Allen Probes) Alexa Halford (GSFC) Dean Pesnell (GSFC / Pontus Brandt (APL) Solar Dynamics Observatory) Tim Bastian (NRAO) David Sibeck (GSFC / Van Allen Probes) Kent Tobiska Adam Szabo (GSFC / Solar Probe Plus) (Space Environment Tech.) Chris St. Cyr (GSFC / Solar Orbiter) LWS Program Ex Officio: Elsayed Talaat & Jeff Morrill (NASA HQ), Shing Fung (GSFC) 2003 Science Definition Team Report: Living with a Star Objectives LWS initiative: goal-oriented research program targeting those aspects of the Sun-Earth system that directly affect life and society. The objectives of LWS will advance research in Sun-Earth system science to new territory, producing knowledge and understanding that society can ultimately utilize. 2003 LWS Science Definition Team Report: TR&T Program The Targeted Research and Technology (TR&T) component of LWS provides the theory, modeling, and data analysis necessary to enable an integrated, system-wide picture of Sun-Earth connection science with societal relevance. Science Definition Team (SDT) … formed -
Sentinelssentinels
SentinelsSentinels This LWS program element includes the Inner Heliospheric Sentinels (IHS) and the Far Side Sentinel (FSS) missions, each with its own distinct concept. And post o’er land and ocean without rest, They also serve who only stand and wait. On His Blindness Goddard Space Flight Center John Milton SentinelsSentinels StudyStudy ChronologyChronology Date Event Concept 1/13/00 Sentinels Briefing By A. Szabo Far Side Observer, L1 Cluster, NG STEREO 1/20/00 Preformulation Team Meeting Imaging/In-Situ Libration Point Measurements 2/2/00 Preformulation Team Meeting Emphasis On Heliospheric Elements 2/3/00 to 3/31/00 Libration Point Orbit Studies Orbit Trajectory Options 3/31/00 Preformulation Team Meeting Far Side Sentinel/4 Inner Heliospheric Sentinels 4/6/00 Sentinels Workshop 4 Satellite Constellation/Far Side Options 4/7/00 JPL Preliminary FSS Concept 3-Axis Spacecraft/5 Instruments/1 Launch 4/10/00 IMDC IHS Briefing 4 Spinning Satellites/4 Instruments/1 Launch 4/17/00 to 4/20/00 IMDC IHS Study 4 Spinning Satellites/4 Instruments/1 Launch 4/20/00 to 4/27/00 JPL FSS Concept/Cost Update Custom Spacecraft/5 Instruments/1 Launch 4/21/00 to 5/5/00 GSFC Mission Costing Far Side Sentinel/4 Inner Heliospheric Sentinels 5/25/00 FSS Mission Concept Summary Defined In Attached System/Subsystem Charts 5/31/00 Program Operating Plan Costed As Two Separate Missions Goddard Space Flight Center SentinelsSentinels ConceptConcept EvolutionEvolution LWS scientists initially considered a complement of spacecraft for the Sentinels mission that included a spacecraft observing the far side of the Sun, a cluster of satellites at L1, and two next-generation STEREO spacecraft. -
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. -
Space Telescope
rnal 5 Monty tarium of the Space Telescope ............ New ............................................... a 29 Gibbous Gazette ........................................... 32 Mobile News Network ............................................ 36 Planetechnica: Slip Rings .............................. 41 Reports from Committees ................................. 43 Secretary's Report ............................................. 47 President's Message ....................................... 54 jane's Corner ............................................................ Seeing Is Believing! In The U.S. & Canada contact Pearl Reilly: 1-800-726-8805 fax : 1-504-764-7665 email : [email protected] Aufflonzoo DlSlntJur", of ZetSS Plaflelilnums In The Umtoo Stares & Canada Carl Zeiss, Planelarium Division 0-07740 Jena ~SEILER +49-3641-642406, fax: -643023 email: [email protected] I N B TRLJIVlENT 170 E. Kirkham Ave ., St.louis. MO 63119 Planetarium Office: #28 Houmas Place, Destrehan, LA 70047 The Planetarian (ISN 0090-3213) is published quarterly by the International Dl"Ylai-,.,,,.',-,,,,,, Society. ©1998, International Planetarium Society, Inc., all rights reserved. Opinions exp1ressed e by authors are personal opinions and are not necessarily the opinions of the International etarium Society, its officers, or agents. Acceptance of advertisements, announcements, 1.27, No.4 material does not imply endorsement by the International Planetarium Society, its officers agents. The Editor welcomes items for consideration for publication. Please consult -
L\Srrronomy Al TD ASTRC)PIIYSICS I IBRARY
L\srrRONOMY Al TD ASTRC)PIIYSICS I IBRARY Series Editors: I. Appenzeller, Heidelberg, Gerrnany G. Börner, Garehing, Gerrnany M. Harwit, Washington, DC, USA R. Kippenhahn, Göttingen, Gerrnany J. Lequeux, Paris, France P. A. Strittmatter, Tueson, AZ, USA V. Trimble, College Park, MD, and Irvine, CA, USA ONLINE LlBRARY Physics and Astronomy http://www.springer.de/phys/ Springer-Verlag Berlin Heidelberg GmbH STRC) ():v1Y ANI) A I ROPf YSICS LfBRARY Series Editors: I. Appenzeller . G. Bömer . M. Harwit . R. Kippenhahn 1. Lequeux . P. A. Strittmatter . V. Trimble Stellar Physics (2 volumes) Galaxy Formation By M. S. Longair Volume I: Fundamental Concepts and Stellar Equilibrium Tools of Radio Astronomy 3rd Edition Volume 2: Stellar Evolution and Stability By K. Rohlfs and T. L. Wilson By G. S. Bisnovatyi-Kogan Tools of Radio Astronomy Theory of Orbits (2 volumes) Problems and Solutions Volume 1: Integrable Systems By T. L. Wilson and S. Hüttemeister and Non-perturbative Methods Atoms in Strong Magnetic Fields Volume 2: Perturbative Quantum Mechanical Treatment and Geometrical Methods and Applications in Astrophysics By D. Boccaletti and G. Pucacco and Quantum Chaos The Solar System 2nd Edition By H. Ruder, G. Wunner, H. Herold By T. Encrenaz and J.-P. Bibring and F. Geyer Physics of Planetary Rings The Stars Celestial Mechanics of Continuous Media By E. L. Schatzman and F. Praderie By A. M. Fridman, N. N. Gorkavyi Cosmic Ray Astrophysics The Physics and Dynamics By R. Schlickeiser ofPlanetary Nebulae By G.A. Gurzadyan Gravitational Lenses Astrophysical Concepts 2nd Edition By P. Schneider, J. Ehlers and E. E. Falco ByM. -
Living with a Star Pre-Formulation Study
Living With a Star Pre-Formulation Study Volume 2 Mission Concept Descriptions August 1, 2000 G O D D A R D S P A C E F L I G H T C E N T E R AcknowledgementAcknowledgement The Living With a Star (LWS) study management acknowledges with gratitude the significant contributions to this volume made by GSFC engineering team and Integrated Mission Design Center (IMDC) personnel. A special note of thanks also goes to NASA Jet Propulsion Laboratory personnel who developed the concept for the Far Side Sentinel mission and provided timely input to the mission study team. G O D D A R D S P A C E F L I G H T C E N T E R OverviewOverview This volume summarizes the results of a 6-month LWS pre-formulation study to develop initial concepts for a set of missions that form the basis for the NASA proposed space weather research network. Pre-formulation begins the process to define a viable and affordable concept for new NASA programs and projects. This step is followed by a more formal formulation phase to ensure that the program or project is ready to proceed into implementation. The policy and process are defined in NPD 7120.4A and NPG 7120.5A. G O D D A R D S P A C E F L I G H T C E N T E R TraceabilityTraceability A concerted effort has been made to maintain traceability of concepts and associated costs throughout the LWS program study. This added rigor will allow intelligent trade-offs to be performed and assessed as the program evolves over the months and years ahead. -
The Sun-Earth Connected System
Living With A Star (LWS) SEC MISSIONS AND PLANS Solar Terrestrial Probes (STP) Madhulika Guhathakurta([email protected]) SUN-EARTH CONNECTIONS DIVISION NASA, OFFICE OF SPACE SCIENCE Alpbach Summer School, July 23- August 1, 2002 M. Guhathakurta NASA The Sun-Earth Connected Headquarters7/23/02-8/1/02 System Planet Variable Star Varying • Radiation • Solar Wind • Energetic Particles Interacting • Solar Wind • Energetic Particles Interacting Interacting • Magnetic Fields • Plasmas • Magnetic fields • Energetic Particles • Atmosphere QUESTIONS: • Plasma • Energetic Particles • How and why does the Sun vary? • How do the Earth and planets respond? • What are the impacts on humanity? Summer School Alpbach M. Guhathakurta NASA Sun-Earth System -- Driven by 11 Year Solar Cycle Headquarters7/23/02-8/1/02 Solar Maximum: • Increased flares, solar mass ejections, radiation belt enhancements. • 100 Times Brighter X-ray Emissions 0.1% Brighter in Visible • Increased heating of Earth’s upper atmosphere; solar event induced ionospheric effects. Declining Phase, Solar Mnimum: • High speed solar wind streams, solar mass ejections cause geomagnetic storms. Solar Flares Geomagnetic Storms Year 98 00 02 04 06 08 10 12 14 16 18 Summer School Alpbach M. Guhathakurta NASA Why Do We Care? Headquarters7/23/02-8/1/02 • Solar Variability Affects Human Technology, Humans in Space, and Terrestrial Climate. • The Sphere of the Human Environment Continues to Expand Above and Beyond Our Planet. - Increasing dependence on space-based systems - Permanent presence of humans in Earth orbit and beyond Summer School Alpbach M. Guhathakurta NASA Living With a Star: Objectives Headquarters7/23/02-8/1/02 LWS is a systems study of three linked questions: • How and why does the Sun vary? • How does the Earth respond? • What are the impacts on life and society? - Understand solar variability and its effects on space and Earth environments. -
Ten Year Assessment Report
ASSESSMENT OF THE LIVING WITH A STAR (LWS) TARGETED RESEARCH AND TECHNOLOGY (TR&T) PROGRAM WITH DISCUSSION OF POSSIBLE FUTURE DIRECTIONS AND PROGRAM ELEMENTS NASA LWS TR&T 2012 STEERING COMMITTEE JULY 2014 July 7, 2014 NASA Living With a Star (LWS) Targeted Research and Technology (TR&T) 2012 Steering Committee Steering Committee Members: Glenn Mason, JHU/APL (Chair) William Abbett, UCBerkeley Geoff Crowley, ASTRA Frank Eparvier, LASP Tamas Gombosi, UMichigan Charles Goodrich, UMD Farzad Kamalabadi, UIllinois Justin Kasper, CFA Anthony Mannucci, JPL Barry Mauk, JHU/APL Peter Riley, Predictive Science Karel Schrijver, LMSAL Nathan Schwadron, UNH Harlan Spence, UNH Liaison to Committee: Kent Miller, Civ USAF AFMC AFOSR/RSE Terry Onsager, NOAA Rodney Viereck, NOAA Anja Stromme, NSF Raymond Walker, NSF Therese Moretto-Jorgensen, NSF Amitava Bhattacharjee, Princeton University and PPPL (former Chair) Spiro Antiochos, GSFC (former Chair) Masha Kuznetsova, CCMC, GSFC David Sibeck, GSFC Dean Pesnell, GSFC Adam Szabo, GSFC Chris St. Cyr, GSFC Ex Officio: Madhulika Guhathakurta, Lead Program Scientist, NASA HQ Ramona Kessel, RBSP Program Scientist, NASA HQ Robert Leamon, NASA HQ Climate Group Additional Contributors: L. Hood, JPL C. Jackman, GSFC P. Pilewskie, LASP 2 July 7, 2014 Table of contents: Page 1. Introduction .......................................................................................................... 4 2. Summary of Strategic Goals ................................................................................ 5 3. Progress -
Heliophysics Division Committee on Solar and Space Physics
Heliophysics Division Committee on Solar and Space Physics Dr. Nicky Fox Heliophysics Division Director March 24, 2021 1 Update on Heliophysics COVID-19 Impacts We recognize everyone’s enormous personal and professional challenges at this time. Everyone’s physical safety and emotional wellness remains our priority. Missions • Minimal impacts to operating missions • Many missions in formulation or development have already submitted, and amended, re-plans to accommodate COVID impacts Research • NASA instituted a number of grant administration flexibilities to ease the burden on grant recipients during the COVID-19 emergency • Post-COVID-19 Recovery: Heliophysics R&A augmentation requests received in early March and under evaluation 2 2020 Year in Review: Heliophysics is Experiencing Incredible Growth • NASEM conducted a mid-term assessment of progress toward implementation of the 2013 Decadal Survey. • Heliophysics program reflects the results of a concerted effort to successfully launch missions developed over the past decade and to increase cadence of flight opportunities. • Heliophysics is driving growth in other areas of the program: • Space weather, space situational awareness, scientific discovery, application of the revolutionary new capabilities in Artificial Intelligence, Machine Learning, citizen science, data analysis and archiving to enhance data assimilation and modeling, and technology development. • In 2018-20, HPD successfully launched 5 missions: GOLD, Space Environment Testbeds, Parker Solar Probe, ICON, and Solar Orbiter Collaboration. • Leaning forward to accelerate mission selections and cadence as outlined in the 2013 Decadal Survey. Heliophysics currently has 12 missions in formulation or development and another 7 under study, representing the largest increase in missions in the history of the Division.