7.3 Polarization of electromagnetic radiation
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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7.2 Free-free radiation
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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7.1 Blackbody radiation
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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6 The key questions
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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5 Distances in extragalactic astronomy
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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4.2 Activity 3: Stars orbiting our local supermassive black hole
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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4.1 The Milky Way
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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3.5 Example 1
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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3.4 The Eddington Limit
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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3.1 AGNs
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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2 Black holes: a reminder
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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1 Meet your first active galactic nuclei
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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Introduction
Active galaxies provide a prime example of high energy processes operating in the Universe. This unit gives an overview of active galaxies, including the supermassive black holes that power the engines at their centres, and the emission processes by which we detect and study them. It also gives practice in mathematical techniques for analysing data and theoretical models.
Author(s): The Open University

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2.2 Informal and formal conversations
This unit focuses on the substance of environmental responsibility – what matters. The question ‘What should constitute our prime focus of attention?’ can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions
Author(s): The Open University

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2.1 Conversing with environment
This unit focuses on the substance of environmental responsibility – what matters. The question ‘What should constitute our prime focus of attention?’ can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions
Author(s): The Open University

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1.2 Connecting human and non-human nature
This unit focuses on the substance of environmental responsibility – what matters. The question ‘What should constitute our prime focus of attention?’ can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions
Author(s): The Open University

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1.1 Natures and environments
This unit focuses on the substance of environmental responsibility – what matters. The question ‘What should constitute our prime focus of attention?’ can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions
Author(s): The Open University

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Introduction
This unit focuses on the substance of environmental responsibility – what matters. The question ‘What should constitute our prime focus of attention?’ can prompt different responses. We consider two points of contrast in differing focuses on what matters: 1 a distinction between nature and the environment 2 a distinction between nature/environment and related human interactions
Author(s): The Open University

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The British Constitution
The fundamentals of British law reside in the American Constitution. Historian Nancy Milton describes the English influence.
Author(s): No creator set

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Cornwallis' Sunken Fleet
A British flotilla from the Battle of Yorktown lies mired in a murky tomb beneath the tides of the York River. Underwater archaeologist John Broadwater dives down to Cornwallis' sunken fleet and shares his finds.Author(s): No creator set

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