Nominated as an outstanding thesis by the Department of Physics and Astronomy of the University of New Mexico, this thesis seeks to identify the gamma-ray burst (GRB) progenitor. GRBs are extragalactic explosions that briefly outshine entire galaxies, but the mechanism that can release that much energy over a 100 second burst is still a mystery. The leading candidate for the GRB progenitor is currently a massive star which collapses to form a black hole–accretion disk system that powers the GRB. GRB afterglows, however, do not always show the expected behavior of a relativistic blast wave interacting with the stellar wind that such a progenitor should have produced before its collapse./pppIn this book, the author uses the Zeus-MP astrophysical hydrodynamics code to model the environment around a stellar progenitor prior to the burst. He then develops a new semi-analytic MHD and emission model to produce light curves for GRBs encountering these realistic density profiles. The work ultimately shows that the circumburst medium surrounding a GRB at the time of the explosion is much more complex than a pure wind, and that observed afterglows are entirely consistent with a large subset of proposed stellar progenitors.
For the soldier on the front lines of World War II, a lifetime of terror and suffering could be crammed into a few horrific hours of combat. This was especially true for members of the 99th Infantry Division who repelled the Germans in the Battle of the Bulge and engaged in some of the most dramatic, hard-fought actions of the war. Once Upon a Time in War presents a stirring view of combat from the perspective of the common soldier. Author Robert E. Humphrey personally retraced the path of the 99th through Belgium and Germany and conducted extensive interviews with more than three hundred surviving veterans. When Humphrey discovered that many 99ers had gone to their graves without telling their stories, he set about to honor their service and coax recollections from survivors. The memories recounted here, many of them painful and long repressed, are remarkable for their clarity. These narratives, seamlessly woven to create a collective biography, offer a gritty reenactment of World War II from the enlisted man’s point of view. Although focused on a single division, Once Upon a Time in War captures the experiences of all American GIs who fought in Europe. For readers captivated by Band of Brothers, this book offers an often tragic, sometimes heartwarming, but always compelling read.
Chief among its contents we find abstracts of land grants, court records, conveyances, births, deaths, marriages, wills, petitions, military records (including a list of North Carolina Officers and Soldiers of the Continental Line, 1775-1782), licenses, and oaths. The abstracts derive from records now located in the state archives and from the public records of the following present-day counties of the Old Albemarle region: Beaufort, Bertie, Camden, Chowan, Currituck, Dare, Gates, Halifax, Hyde, Martin, Northampton, Pasquotank, Perquimans, Tyrrell, and Washington, and the Virginia counties of Surry and Isle of Wight.
An updated edition of the “penetrating study” examining how the current state of mass media puts our democracy at risk (Noam Chomsky). What happens when a few conglomerates dominate all major aspects of mass media, from newspapers and magazines to radio and broadcast television? After all the hype about the democratizing power of the internet, is this new technology living up to its promise? Since the publication of this prescient work, which won Harvard’s Goldsmith Book Prize and the Kappa Tau Alpha Research Award, the concentration of media power and the resultant “hypercommercialization of media” has only intensified. Robert McChesney lays out his vision for what a truly democratic society might look like, offering compelling suggestions for how the media can be reformed as part of a broader program of democratic renewal. Rich Media, Poor Democracy remains as vital and insightful as ever and continues to serve as an important resource for researchers, students, and anyone who has a stake in the transformation of our digital commons. This new edition includes a major new preface by McChesney, where he offers both a history of the transformation in media since the book first appeared; a sweeping account of the organized efforts to reform the media system; and the ongoing threats to our democracy as journalism has continued its sharp decline. “Those who want to know about the relationship of media and democracy must read this book.” —Neil Postman “If Thomas Paine were around, he would have written this book.” —Bill Moyers
Lonely Planet: The world’s number one travel guide publisher* Lonely Planet’s New York City is your passport to the most relevant, up-to-date advice on what to see and skip, and what hidden discoveries await you. Food truck, deli, pizza parlor, pub – eat your way through a world of food; take a sunset stroll across the Brooklyn Bridge for romantic views of amber skies; and take in a spectacular show on Broadway – all with your trusted travel companion. Get to the heart of New York City and begin your journey now! Inside Lonely Planet’s New York City: Colour maps and images throughout Highlights and itineraries help you tailor your trip to your personal needs and interests Insider tips to save time and money and get around like a local, avoiding crowds and trouble spots Essential info at your fingertips - hours of operation, phone numbers, websites, transit tips, prices Honest reviews for all budgets - eating, sleeping, sightseeing, going out, shopping, hidden gems that most guidebooks miss Cultural insights provide a richer, more rewarding travel experience - covering history, people, music, landscapes, wildlife, cuisine, politics Covers Lower Manhattan & the Financial District, SoHo & Chinatown, East Village & Lower East Side, West Village, Chelsea & the Meatpacking District, Union Square, Flatiron District & Gramercy, Midtown, Upper East Side, Upper West Side & Central Park, Harlem & Upper Manhattan, Brooklyn, Queens. eBook Features: (Best viewed on tablet devices and smartphones) Downloadable PDF and offline maps prevent roaming and data charges Effortlessly navigate and jump between maps and reviews Add notes to personalise your guidebook experience Seamlessly flip between pages Bookmarks and speedy search capabilities get you to key pages in a flash Embedded links to recommendations' websites Zoom-in maps and images Inbuilt dictionary for quick referencing The Perfect Choice: Lonely Planet’s New York City is our most comprehensive guide to the city, and is perfect for discovering both popular and offbeat experiences. Looking for just the highlights? Check out Pocket New York City, our handy-sized guide featuring the best sights and experiences for a shorter trip. About Lonely Planet: Lonely Planet is a leading travel media company and the world’s number one travel guidebook brand, providing both inspiring and trustworthy information for every kind of traveller since 1973. Over the past four decades, we’ve printed over 145 million guidebooks and grown a dedicated, passionate global community of travellers. You’ll also find our content online, and in mobile apps, video, 14 languages, nine international magazines, armchair and lifestyle books, ebooks, and more. ‘Lonely Planet guides are, quite simply, like no other.’ – New York Times ‘Lonely Planet. It's on everyone's bookshelves; it's in every traveller's hands. It's on mobile phones. It's on the Internet. It's everywhere, and it's telling entire generations of people how to travel the world.’ – Fairfax Media (Australia) *Source: Nielsen BookScan: Australia, UK, USA, 5/2016-4/2017 Important Notice: The digital edition of this book may not contain all of the images found in the physical edition.
Nominated as an outstanding thesis by the Department of Physics and Astronomy of the University of New Mexico, this thesis seeks to identify the gamma-ray burst (GRB) progenitor. GRBs are extragalactic explosions that briefly outshine entire galaxies, but the mechanism that can release that much energy over a 100 second burst is still a mystery. The leading candidate for the GRB progenitor is currently a massive star which collapses to form a black hole–accretion disk system that powers the GRB. GRB afterglows, however, do not always show the expected behavior of a relativistic blast wave interacting with the stellar wind that such a progenitor should have produced before its collapse./pppIn this book, the author uses the Zeus-MP astrophysical hydrodynamics code to model the environment around a stellar progenitor prior to the burst. He then develops a new semi-analytic MHD and emission model to produce light curves for GRBs encountering these realistic density profiles. The work ultimately shows that the circumburst medium surrounding a GRB at the time of the explosion is much more complex than a pure wind, and that observed afterglows are entirely consistent with a large subset of proposed stellar progenitors.
This will help us customize your experience to showcase the most relevant content to your age group
Please select from below
Login
Not registered?
Sign up
Already registered?
Success – Your message will goes here
We'd love to hear from you!
Thank you for visiting our website. Would you like to provide feedback on how we could improve your experience?
This site does not use any third party cookies with one exception — it uses cookies from Google to deliver its services and to analyze traffic.Learn More.