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A Simple Approach to the Supernova Progenitor-Explosion Connection
A Simple Approach to the Supernova Progenitor-Explosion Connection Bernhard Müller Queen's University Belfast Monash Alexander Heger, David Liptai, Joshua Cameron (Monash University) Many potential/indirect observables from core-collapse supernovae, but some of the most direct ones (explosion energies, remnant masses) are heavy elements challenging for SN theory! massive star core-collapse supernovae neutron stars & gravitational waves neutrinos supernova remnants The neutrino-driven mechanism in its modern flavour shock ● Stalled accretion shock still oscillations (“SASI”) pushed outward to ~150km as matter piles up on the PNS, then recedes again convection ● Heating or gain region g develops some tens of ms n i t g a n after bounce e li h o o c ● Convective overturn & shock oscillations “SASI” enhance the efficiency of -heating, shock which finally revives the shock ● Big challenge: Show that this works! Status of 3D Neutrino Hydrodynamics Models with Multi-Group Transport First-principle 3D models: ● Mixed record, some failures ● Some explosions, delayed compared to 2D ● Models close to the threshold So what is missing? 27 M Hanke et al. (2013) 2 3/5 2 −3/5 ⊙ ● Lcrit ∝M˙ M 14 Ma /3 ● → Increase neutrino heating or Reynolds stresses ● Unknown/undetermined microphysics (e.g. Melson et al. 2015)? ● 20 M Melson et al. (2015) Lower explosion threshold in ⊙ SASI-dominated regime (Fernandez 2015)? 15 M⊙ Lentz et al. (2015) ● Better 1D/multi-D progenitor Or with simpler schemes: e.g. IDSA+leakage Takiwaki et al. (2014) models? Challenge: Connecting to Observables Several 50 diagnostic 10 erg with explosion sustained energy accretion . l a ) t 2 e 1 a 0 k 2 ( n Pejcha & Prieto (2015): Explosion energies a J vs. -
La Guardia-Pyke Bomb Carriers James A
Journal of Criminal Law and Criminology Volume 34 | Issue 3 Article 8 1943 La Guardia-Pyke Bomb Carriers James A. Pyke Follow this and additional works at: https://scholarlycommons.law.northwestern.edu/jclc Part of the Criminal Law Commons, Criminology Commons, and the Criminology and Criminal Justice Commons Recommended Citation James A. Pyke, La Guardia-Pyke Bomb Carriers, 34 J. Crim. L. & Criminology 198 (1943-1944) This Criminology is brought to you for free and open access by Northwestern University School of Law Scholarly Commons. It has been accepted for inclusion in Journal of Criminal Law and Criminology by an authorized editor of Northwestern University School of Law Scholarly Commons. THE LA GUARDIA-PYKE BOMB CARRIERS* James A. Pyket Soon after the World's Fair bomb explosion of July 4, 1940, in which two members of the New York Police Department were killed and several injured, the Honorable Fiorello H. La Guardia, Mayor of the City of New York, summoned the author, as Com- manding Officer of the Bomb Squad, to the City Hall for the pur- pose of discussing the catastrophe and means of preventing a re- currence. As the result of this and several other conferences the "La Guardia-Pyke Bomb Carriers" were developed. The purpose of these carriers is to take a bomb from a congested area to a remote or suburban district and to do so in a manner which will protect the public and the police. With the construc- tion adopted should the bomb explode enroute the explosive forces are reduced to a minimum by means of a triple air-cushioning effect produced by the baffle screens of woven steel cable. -
Conventional Explosions and Blast Injuries 7
Chapter 7: CONVENTIONAL EXPLOSIONS AND BLAST INJURIES David J. Dries, MSE, MD, FCCM David Bracco, MD, EDIC, FCCM Tarek Razek, MD Norma Smalls-Mantey, MD, FACS, FCCM Dennis Amundson, DO, MS, FCCM Objectives ■ Describe the mechanisms of injury associated with conventional explosions. ■ Outline triage strategies and markers of severe injury in patients wounded in conventional explosions. ■ Explain the general principles of critical care and procedural support in mass casualty incidents caused by conventional explosions. ■ Discuss organ-specific support for victims of conventional explosions. Case Study Construction workers are using an acetylene/oxygen mixture to do some welding work in a crowded nearby shopping mall. Suddenly, an explosion occurs, shattering windows in the mall and on the road. The acetylene tank seems to be at the origin of the explosion. The first casualties arrive at the emergency department in private cars and cabs. They state that at the scene, blood and injured people are everywhere. - What types of patients do you expect? - How many patients do you expect? - When will the most severely injured patients arrive? - What is your triage strategy, and how will you triage these patients? - How do you initiate care in victims of conventional explosions? Fundamental Disaster Management I . I N T R O D U C T I O N Detonation of small-volume, high-intensity explosives is a growing threat to civilian as well as military populations. Understanding circumstances surrounding conventional explosions helps with rapid triage and recognition of factors that contribute to poor outcomes. Rapid evacuation of salvageable victims and swift identification of life-threatening injuries allows for optimal resource utilization and patient management. -
In Defense of Cyberterrorism: an Argument for Anticipating Cyber-Attacks
IN DEFENSE OF CYBERTERRORISM: AN ARGUMENT FOR ANTICIPATING CYBER-ATTACKS Susan W. Brenner Marc D. Goodman The September 11, 2001, terrorist attacks on the United States brought the notion of terrorism as a clear and present danger into the consciousness of the American people. In order to predict what might follow these shocking attacks, it is necessary to examine the ideologies and motives of their perpetrators, and the methodologies that terrorists utilize. The focus of this article is on how Al-Qa'ida and other Islamic fundamentalist groups can use cyberspace and technology to continue to wage war againstthe United States, its allies and its foreign interests. Contending that cyberspace will become an increasingly essential terrorist tool, the author examines four key issues surrounding cyberterrorism. The first is a survey of conventional methods of "physical" terrorism, and their inherent shortcomings. Next, a discussion of cyberspace reveals its potential advantages as a secure, borderless, anonymous, and structured delivery method for terrorism. Third, the author offers several cyberterrorism scenarios. Relating several examples of both actual and potential syntactic and semantic attacks, instigated individually or in combination, the author conveys their damagingpolitical and economic impact. Finally, the author addresses the inevitable inquiry into why cyberspace has not been used to its full potential by would-be terrorists. Separately considering foreign and domestic terrorists, it becomes evident that the aims of terrorists must shift from the gross infliction of panic, death and destruction to the crippling of key information systems before cyberattacks will take precedence over physical attacks. However, given that terrorist groups such as Al Qa'ida are highly intelligent, well-funded, and globally coordinated, the possibility of attacks via cyberspace should make America increasingly vigilant. -
Could a Nearby Supernova Explosion Have Caused a Mass Extinction? JOHN ELLIS* and DAVID N
Proc. Natl. Acad. Sci. USA Vol. 92, pp. 235-238, January 1995 Astronomy Could a nearby supernova explosion have caused a mass extinction? JOHN ELLIS* AND DAVID N. SCHRAMMtt *Theoretical Physics Division, European Organization for Nuclear Research, CH-1211, Geneva 23, Switzerland; tDepartment of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637; and *National Aeronautics and Space Administration/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, IL 60510 Contributed by David N. Schramm, September 6, 1994 ABSTRACT We examine the possibility that a nearby the solar constant, supernova explosions, and meteorite or supernova explosion could have caused one or more of the comet impacts that could be due to perturbations of the Oort mass extinctions identified by paleontologists. We discuss the cloud. The first of these has little experimental support. possible rate of such events in the light of the recent suggested Nemesis (4), a conjectured binary companion of the Sun, identification of Geminga as a supernova remnant less than seems to have been excluded as a mechanism for the third,§ 100 parsec (pc) away and the discovery ofa millisecond pulsar although other possibilities such as passage of the solar system about 150 pc away and observations of SN 1987A. The fluxes through the galactic plane may still be tenable. The supernova of y-radiation and charged cosmic rays on the Earth are mechanism (6, 7) has attracted less research interest than some estimated, and their effects on the Earth's ozone layer are of the others, perhaps because there has not been a recent discussed. -
Military Guide to Terrorism in the Twenty-First Century
US Army TRADOC TRADOC G2 Handbook No. 1 AA MilitaryMilitary GuideGuide toto TerrorismTerrorism in the Twenty-First Century US Army Training and Doctrine Command TRADOC G2 TRADOC Intelligence Support Activity - Threats Fort Leavenworth, Kansas 15 August 2007 DISTRIBUTION RESTRICTION: Approved for Public Release; Distribution Unlimited. 1 Summary of Change U.S. Army TRADOC G2 Handbook No. 1 (Version 5.0) A Military Guide to Terrorism in the Twenty-First Century Specifically, this handbook dated 15 August 2007 • Provides an information update since the DCSINT Handbook No. 1, A Military Guide to Terrorism in the Twenty-First Century, publication dated 10 August 2006 (Version 4.0). • References the U.S. Department of State, Office of the Coordinator for Counterterrorism, Country Reports on Terrorism 2006 dated April 2007. • References the National Counterterrorism Center (NCTC), Reports on Terrorist Incidents - 2006, dated 30 April 2007. • Deletes Appendix A, Terrorist Threat to Combatant Commands. By country assessments are available in U.S. Department of State, Office of the Coordinator for Counterterrorism, Country Reports on Terrorism 2006 dated April 2007. • Deletes Appendix C, Terrorist Operations and Tactics. These topics are covered in chapter 4 of the 2007 handbook. Emerging patterns and trends are addressed in chapter 5 of the 2007 handbook. • Deletes Appendix F, Weapons of Mass Destruction. See TRADOC G2 Handbook No.1.04. • Refers to updated 2007 Supplemental TRADOC G2 Handbook No.1.01, Terror Operations: Case Studies in Terror, dated 25 July 2007. • Refers to Supplemental DCSINT Handbook No. 1.02, Critical Infrastructure Threats and Terrorism, dated 10 August 2006. • Refers to Supplemental DCSINT Handbook No. -
NUCLEAR WEAPONS EFFECTS Introduction: the Energy Characteristics and Output from Nuclear Weapons Differ Significantly from Conve
NUCLEAR WEAPONS EFFECTS Introduction: The energy characteristics and output from nuclear weapons differ significantly from conventional weapons. Nuclear detonations exhibit much higher temperature within the fireball and produce peak temperatures of several hundred million degrees and intense x-ray heating that results in air pressure pulses of several million atmospheres. Conventional chemical explosions result in much lower temperatures and release the bulk of their energy as air blast and shock waves. In an atmospheric detonation, such as was deployed in Japan, it is the blast and thermal component of the nuclear explosion that is the major factor in destruction and death, not nuclear radiation, as the public believes. The effective range of immediate harm to humans from nuclear radiation from the atmospheric explosion is much less than the effective range from blast and thermal heating. In order to limit the discussion of weapons effects to elementary terms, this discussion is based upon a single worst-case scenario. Probably the largest weapon that might be employed against a population would have a yield of less than one-megaton (or 1 million tons of TNT equivalent energy or simply 1 MT). However, a crude terrorist nuclear device would probably be in the range of a few thousand tons of TNT equivalent energy or a few KT). The discussion here is based upon a nuclear detonation of 1 MT. Yield: The destructive power of a nuclear weapon, when compared to the same amount of energy produced by TNT is defined as the ‘yield’ of the nuclear weapon. A 20-kiloton (KT) weapon, such as was detonated over Japan in World War II was equivalent in energy yield to 20,000 tons of TNT. -
Sample Chapter Template for AFFA
The Training Material on “Dangerous Goods Handling (All modes)” has been produced under Project Sustainable Human Resource Development in Logistic Services for ASEAN Member States with the support from Japan-ASEAN Integration Fund (JAIF). Copyright Association of Southeast Asian Nations (ASEAN) 2014. All rights reserved. Dangerous Goods Handling Chapter 2: International Classification of Dangerous Goods Objectives This chapter will explain UN Transport regulations, its history and basis as model regulations for international classification system for other modes of transport. The linkage into the ASEAN Protocol 9 framework on the international carriage of dangerous goods in ASEAN will also be explained. 9 classes of dangerous goods classification shall be key content in this chapter. Other relevant basic terms such as Class, Division, Packaging Group (PG), UN Number (UNNO) and Proper Shipping Names (PSN) will also be covered. As supplement knowledge in classification of substances or mixtures that have more than one hazard, the explanation on precedence of hazard characteristics will be given. Basic hazard communication such as Labelling requirements, Dangerous Goods Declaration (DGD) or Multi-modal Dangerous Goods Form shall be explained. 1. Introduction 1.1 United Nations Recommendations on the Transport of Dangerous Goods (UNTDG/UNRTDG) These Recommendations have been developed by the United Nations Economic and Social Council's Committee of Experts on the Transport of Dangerous Goods in the light of technical progress, the advent of new substances and materials, the exigencies of modern transport systems and, above all, the requirement to ensure the safety of people, property and the environment. They are addressed to governments and international organizations concerned with the regulation of the transport of dangerous goods. -
Daesh/IS Armored Vehicle Borne Improvised Explosive Devices (Avbieds): Insurgent Use and Terrorism Potentials
Claremont Colleges Scholarship @ Claremont CGU Faculty Publications and Research CGU Faculty Scholarship 2-2-2016 Daesh/IS Armored Vehicle Borne Improvised Explosive Devices (AVBIEDs): Insurgent Use and Terrorism Potentials. Robert J. Bunker Claremont Graduate University Recommended Citation Bunker, R. J. (2016, February 02). Daesh/IS Armored Vehicle Borne Improvised Explosive Devices (AVBIEDs): Insurgent Use and Terrorism Potentials. Retrieved February 02, 2016, from TRENDS Research & Advisory, http://trendsinstitution.org/daeshis- armored-vehicle-borne-improvised-explosive-devices-avbieds-insurgent-use-and-terrorism-potentials/ This Blog is brought to you for free and open access by the CGU Faculty Scholarship at Scholarship @ Claremont. It has been accepted for inclusion in CGU Faculty Publications and Research by an authorized administrator of Scholarship @ Claremont. For more information, please contact [email protected]. Robert J. Bunker Non-Resident Fellow, Counter-Terrorism © January 2016 http://trendsinstitution.org/daeshis-armored-vehicle-borne-improvised-explosive-devices-avbieds-insurgent- use-and-terrorism-potentials/ Daesh/IS Armored Vehicle Borne Improvised Explosive Devices (AVBIEDs): Insurgent Use and Terrorism Potentials This essay in the TRENDS terrorism futures series focuses on advanced threats related to vehicle borne improvised explosive devices (VBIEDs). It provides a threat typology of these devices with their evolution into the armored (AVBIED) variant that has now been fielded by Daesh/IS in both Iraq and Syria. A short overview of such insurgent use will be provided as well as a brief discussion of the terrorism potentials of such use if directed against the UAE, Europe, or the United States. VBIED Threat Typology Vehicle borne improvised explosive devices (VBIEDs), or simply vehicle bombs, have existed since the September 1920 deployment of ‘Buda’s Wagon’—an actual horse drawn wagon filled with explosives and scrap metal—at Wall and Broad streets in downtown Manhattan by the anarchist Mario Buda. -
Explosive Device Response Operations
EXPLOSIVE DEVICE RESPONSE OPERATIONS Capability Definition Explosive Device Response Operations is the capability to coordinate, direct, and conduct improvised explosive device (IED) response after initial alert and notification. Coordinate intelligence fusion and RESPOND MISSION: EXPLOSIVE DE analysis, information collection, and threat recognition, assess the situation and conduct appropriate Render Safe Procedures (RSP). Conduct searches for additional devices and coordinate overall efforts to mitigate chemical, biological, radiological, nuclear, and explosive (CBRNE) threat to the incident site. Outcome Threat assessments are conducted, the explosive and/or hazardous devices are rendered safe, and the area is cleared of hazards. Measures are implemented in the following priority order: ensure public safety; safeguard the officers on the scene (including the bomb technician); collect and preserve evidence; protect and preserve public and private property; and restore public services. Relationship to National Response Plan Emergency Support Function (ESF)/Annex This capability supports the following Emergency Support Functions (ESFs): Terrorism Incident Law Enforcement and Investigation Annex ESF #10: Oil and Hazardous Materials Response ESF #13: Public Safety and Security VICE RESPONSE OPERATIONS Preparedness Tasks and Measures/Metrics Activity: Develop and Maintain Plans, Procedures, Programs, and Systems Critical Tasks Res.B2c 1.1 Develop, distribute, and maintain National Guidelines for Bomb Technicians Develop effective procedures -
Explosive Weapon Effectsweapon Overview Effects
CHARACTERISATION OF EXPLOSIVE WEAPONS EXPLOSIVEEXPLOSIVE WEAPON EFFECTSWEAPON OVERVIEW EFFECTS FINAL REPORT ABOUT THE GICHD AND THE PROJECT The Geneva International Centre for Humanitarian Demining (GICHD) is an expert organisation working to reduce the impact of mines, cluster munitions and other explosive hazards, in close partnership with states, the UN and other human security actors. Based at the Maison de la paix in Geneva, the GICHD employs around 55 staff from over 15 countries with unique expertise and knowledge. Our work is made possible by core contributions, project funding and in-kind support from more than 20 governments and organisations. Motivated by its strategic goal to improve human security and equipped with subject expertise in explosive hazards, the GICHD launched a research project to characterise explosive weapons. The GICHD perceives the debate on explosive weapons in populated areas (EWIPA) as an important humanitarian issue. The aim of this research into explosive weapons characteristics and their immediate, destructive effects on humans and structures, is to help inform the ongoing discussions on EWIPA, intended to reduce harm to civilians. The intention of the research is not to discuss the moral, political or legal implications of using explosive weapon systems in populated areas, but to examine their characteristics, effects and use from a technical perspective. The research project started in January 2015 and was guided and advised by a group of 18 international experts dealing with weapons-related research and practitioners who address the implications of explosive weapons in the humanitarian, policy, advocacy and legal fields. This report and its annexes integrate the research efforts of the characterisation of explosive weapons (CEW) project in 2015-2016 and make reference to key information sources in this domain. -
Iraq Index Tracking Variables of Reconstruction & Security in Post-Saddam Iraq
THE BROOKINGS INSTITUTION 1775 Massachusetts Avenue, NW Washington, DC 20036-2188 Tel: 202-797-6000 Fax: 202-797-6004 www.brookin gs.edu Iraq Index Tracking Variables of Reconstruction & Security in Post-Saddam Iraq www.brookings.edu/iraqindex September 28, 2006 For full source information for entries other than the current month, please see the Iraq Index archives at www.brookings.edu/fp/saban/iraq/indexarchive.htm Michael E. O’Hanlon Nina Kamp For more information please contact Nina Kamp at [email protected] TABLE OF CONTENTS Security Indicators Page U.S. Troop Fatalities since March 2003…….………………………………………………..………………….………………………………………..….……4 Cause of Death for US Troops…………………………………………………………………………………………………………………………………….5 American Military Fatalities by Category………………………………………………………………….….…………………………………..…….……….6 U.S. Troops Wounded in Action since March 2003……………………………..…………….……………………………….……………………….………..6 British Military Fatalities since March 2003………………………………….……………….……………………...................................................................7 Non-U.S. & U.K. Coalition Military Fatalities since March, 2003……………..….…………………….……………………….……………………………..7 Non-U.S. & U.K. Coalition Military Fatalities by Country since March 2003…….…………………………………………………………………………..8 Iraqi Military and Police Killed since January 2005……………………………………………………………………………………………..………...……8 Car Bombs in Iraq (Lethal and Non-Lethal)………………………….…………………………………………………..…………………………………...…9 Iraqi Civilians Killed by US Troops……………………………………………………………………………………………………….………...……………9 Iraqi