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Measurement of Parallax and Lens Mass in the Gravitational Microlensing Free Floating Planet Event MOA-2011-BLG-274, and Aspects of Planet Detection at Moderately High Magnification

2013 Gravitational lenses
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Release : 2013
Genre : Gravitational lenses
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Book Synopsis Measurement of Parallax and Lens Mass in the Gravitational Microlensing Free Floating Planet Event MOA-2011-BLG-274, and Aspects of Planet Detection at Moderately High Magnification by : Matthew Freeman

Download or read book Measurement of Parallax and Lens Mass in the Gravitational Microlensing Free Floating Planet Event MOA-2011-BLG-274, and Aspects of Planet Detection at Moderately High Magnification written by Matthew Freeman. This book was released on 2013. Available in PDF, EPUB and Kindle. Book excerpt: Microlensing is a powerful technique for detecting non-luminous objects in the galaxy. This has been one of several techniques that, in the past few years, have discovered hundreds of planets orbiting around other stars in our galaxy. The microlensing event MB11274 showed a short timescale and a large source size effect. These suggest that, rather than being a star, the lens body in this event may be a free floating planet, a class of object only recently discovered. A measurement of parallax in this event would allow the mass of this object to be measured - the first time that the mass of one of these planets has been measured directly. In this thesis an attempt to measure the terrestrial parallax signal in the event is described. Searches are also made for a nearby star, and any moons orbiting the planet. In addition, microlensing surveys looking for planets usually focus on the highest magnification events, as it is assumed that they give the best chance of detection. This thesis also presents analysis of moderate magnification microlensing events, which suggests that this type of event provides a higher sensitivity to planets.

Gravitational Lensing and Microlensing

2002 Science
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Release : 2002
Genre : Science
Kind : eBook
Book Rating : 529/5 ( reviews)

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Book Synopsis Gravitational Lensing and Microlensing by : Silvia Mollerach

Download or read book Gravitational Lensing and Microlensing written by Silvia Mollerach. This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive and self-contained exposition of gravitational lensing phenomena.

Discovering Galactic Planets by Gravitational Microlensing

1996
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Release : 1996
Genre :
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Book Synopsis Discovering Galactic Planets by Gravitational Microlensing by : Joachim Wambsganss

Download or read book Discovering Galactic Planets by Gravitational Microlensing written by Joachim Wambsganss. This book was released on 1996. Available in PDF, EPUB and Kindle. Book excerpt:

Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention

2017-11-30 Archaeoastronomy
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Release : 2017-11-30
Genre : Archaeoastronomy
Kind : eBook
Book Rating : 770/5 ( reviews)

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Book Synopsis Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention by : Clive L. N. Ruggles

Download or read book Heritage Sites of Astronomy and Archaeoastronomy in the Context of the UNESCO World Heritage Convention written by Clive L. N. Ruggles. This book was released on 2017-11-30. Available in PDF, EPUB and Kindle. Book excerpt: This joint venture between ICOMOS, the advisory body to UNESCO on cultural sites, and the International Astronomical Union is the second volume in an ongoing exploration of themes and issues relating to astronomical heritage in particular and to science and technology heritage in general. It examines a number of key questions relating to astronomical heritage sites and their potential recognition as World Heritage, attempting to identify what might constitute "outstanding universal value" in relation to astronomy. "Heritage Sites of Astronomy and Archaeoastronomy--Volume 2" represents the culmination of several years' work to address some of the most challenging issues raised in the first ICOMOS-IAU Thematic Study, published in 2010. These include the recognition and preservation of the value of dark skies at both cultural and natural sites and landscapes; balancing archaeoastronomical considerations in the context of broader archaeological and cultural values; the potential for serial nominations; and management issues such as preserving the integrity of astronomical sightlines through the landscape.Its case studies are developed in greater depth than those in volume 1, and generally structured as segments of draft nomination dossiers. They include seven-stone antas (prehistoric dolmens) in Portugal and Spain, the thirteen towers of Chankillo in Peru, the astronomical timing of irrigation in Oman, Pic du Midi de Bigorre Observatory in France, Baikonur Cosmodrome in Kazakhstan, and Aoraki-Mackenzie International Dark Sky Reserve in New Zealand. A case study on Stonehenge, already a World Heritage Site, focuses on preserving the integrity of the solstitial sightlines.As for the first ICOMOS-IAU Thematic Study, a international team of authors including historians, astronomers and heritage professionals is led by Professor Clive Ruggles for the IAU and Professor Michel Cotte for ICOMOS.

Understanding the Universe

2020-03-17 Antiques & Collectibles
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Release : 2020-03-17
Genre : Antiques & Collectibles
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Book Synopsis Understanding the Universe by : Manjunath.R

Download or read book Understanding the Universe written by Manjunath.R. This book was released on 2020-03-17. Available in PDF, EPUB and Kindle. Book excerpt: A Scientific Introduction to Subatomic particles, Alien Intelligence, and Human Space Exploration (For the Cosmically Curious): There are many fundamental questions about the universe that have intrigued scientists, philosophers, and ordinary people for centuries. Here are a few of them: What is the universe made of? This is one of the most basic questions about the universe. Scientists have identified a number of different types of matter and energy, including atoms, subatomic particles, dark matter, and dark energy, but there is still much we don't know. How did the universe begin? The origin of the universe is a subject of intense study and debate. The prevailing theory is the Big Bang, which suggests that the universe began as a singularity and has been expanding ever since. What is the ultimate fate of the universe? Will it keep on expanding indefinitely or will it ultimately come to an end? Some theories suggest that the universe may end in a "big rip" or a "big crunch," while others suggest that it will continue to expand indefinitely. What is the nature of space and time? These are fundamental concepts that are still not fully understood. Some theories suggest that space and time are intertwined and that they can be distorted by the presence of matter and energy. Are there other universes beyond our own? Some theories suggest that our universe may be just one of many in a "multiverse." Although this theory is yet hypothetical, it is a fascinating concept that could have significant ramifications for our comprehension of the cosmos. These are just a few of the many fundamental questions about the universe that scientists and philosophers continue to explore. "Understanding the Universe: Quarks, Leptons and the Big Bang" is a comprehensive exploration of the fundamental principles that govern the universe we live in. From the tiniest particles to the grandest structures in the cosmos, this book takes readers on a journey of discovery through the mysteries of modern physics and cosmology. Starting with an introduction to the basic building blocks of matter, the book delves into the strange world of quarks and leptons, exploring their properties and interactions. It then examines the forces that govern the behavior of matter, including the strong and weak nuclear forces, electromagnetism, and gravity. The book also covers the history of the universe, from its origins in the Big Bang to the present day, and discusses the evolution of stars and galaxies. Readers will gain a deep understanding of the structure of the universe, its expansion, and the mysterious dark matter and dark energy that make up the vast majority of its mass. Filled with engaging examples, clear explanations, and fascinating insights, "Understanding the Universe: Quarks, Leptons and the Big Bang" is a must-read for anyone interested in the inner workings of the cosmos. Whether you're a student of physics, a science enthusiast, or simply curious about the universe, this book will provide you with a solid foundation for understanding the world around us.

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