Latest SOHO Extreme ultraviolet Imaging Telescope
Fe IX,X 17.1 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope
Fe XII 19.5 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope
Fe XV 28.4 nm solar image Latest SOHO Extreme ultraviolet Imaging Telescope
He II 30.4 nm solar image Latest soft X-ray solar image in the titanium-polyimide
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 {Tiny solar photospheric magnetogram thumbnail
image}  {Tiny 1083.0 nm solar thumbnail image}  {Tiny solar chromospheric magnetogram thumbnail image}  {Tiny groundbased coronagraph image}  {Tiny pseudo-continuum solar photospheric thumbnail 
image}

(Above) Latest solar images, from various telescopes and spacecraft. Click on them for more detail.








Grades for Phys 150 for Spring 2008 have been posted to my.csufresno.edu.

Thanks for taking Phys 150!











PHYS 150 Astrophysics
MW 6:00-7:15 p.m. in McLane 167.
2008 Spring Class Syllabus:
Please read carefully.
Instructor: Dr. Ringwald
E-mail: ringwald@csufresno.edu
Phone: (559) 278-8426
Office: McLane Hall 11, in the new `J' wing
Office hours (between January 16 and May 9):
MW 1-3, F 1-2.
Course description: (3 credits) Prerequisite: PHYS 4C. Introduction to celestial mechanics, spectral classification, stellar atmospheres and interiors, star formation and evolution, variable stars, neutron stars, pulsars, black holes, the nature of galaxies, and the expansion of the Universe.

Required texts, which should be available in Kennel Bookstore:

Recommended texts:

Class objectives:
(1) To introduce physicists to interesting problems
(2) To provide teachers with "whys" for their introductory astronomy classes
(3) To prepare astronomers (professional and amateur) for the research problems of the future


TENTATIVE list of chapters to be covered (updated 2007 October 17):
Week
Date
Chapter
Date
Chapter
1 1/14
-
No class 1/16
1
Introduction
2 1/21
1
Holiday (Martin Luther King Day) 1/23
2
The Birth of Science: classical astronomy
3 1/28
2
Celestial Mechanics 1/30
2
Light and Astronomical Telescopes
4 2/04
2
Light and Astronomical Telescopes 2/06
3
The Great Laws of Microscopic Physics: radiative processes, the H atom and line radiation
5 2/11
4
The Great Laws of Macroscopic Physics: thermal (blackbody) radiation and the Doppler Effect 2/13
17
The Solar System
6 2/18
-
Holiday (Presidents Day) 2/20
5
The Sun as a Star
7 2/25
5
The Sun as a Star: the Virial theorem 2/27
6
Nuclear Energy and Synthesis of the Elements: Energy Generation in Stars
8 3/03
6
Nuclear Energy and Synthesis of the Elements: Review of Nuclear Physics 3/05
1-4
Mid-Term Exam 1
9 3/10
6
Nuclear Energy and Synthesis of the Elements: Fusion Reaction Chains and Nucleosynthesis 3/12
7
The End States of Stars: Hydrostatic Equilibrium and White Dwarfs
- 3/17
-
Spring Break 3/19
-
Spring Break
10 3/24
7
The End States of Stars: Supernovae and Gamma-Ray Bursts 3/26
7
The End States of Stars: Neutron Stars, Pulsars, and Black Holes
11 3/31
-
Holiday (César Chávez Day) 4/02
9
Stars: magnitudes and colors
12 4/07
8, 9
Stars: Spectral Types, Luminosity Classes, and the Hertzsprung-Russell Diagram 4/09
8
Stellar Evolution
13 4/14
9
Star Clusters and the H-R Diagram 4/16
9
Pulsating stars and the extragalactic distance scale
14 4/21
10
Binary Stars: extrasolar planets 4/23
10
Binary Stars: close binaries; Take-Home Mid-Term Exam 2 and Paper Title and Summary due.
15 4/28
11, 18, 20
The Material Between the Stars;
Origin of the Solar System and Earth;
Life and Intelligence in the Universe
4/30
14, 15
"Ultimate Address";
Clusters of Galaxies and the Expansion of the Universe;
The Big Bang
16 5/05
12, 13
The Milky Way Galaxy and Dark Matter;
Quiet and Active Galaxies
5/07
16
Gravitation and Cosmology: ΛCDM and inflation; Paper due

Course grades will be awarded for the following final percentages:
85.0-100% = A; 70.0-84.9% = B; 55.0-69.9% = C; 40.0-54.9% = D; 0-39.9% = F.

These percentages will be computed with the following weights:

25% Homework. Sorry, but no late assignments will be accepted.
15% Mid-Term Exam 1 (in class, closed book and closed notes, on Wednesday, March 5).
15% Mid-Term Exam 2 (take-home, due Wednesday, April 23).
2% Paper Titles and Summaries (150-250 words long, due Wednesday, April 23).
23% Paper (over 4000 words, see below: due on the last day of instruction, Wednesday, May 7).
20% Final Exam (in class, open book and notes: Wednesday, May 14, 8:00-10:00 p.m. in McLane 167).

Sorry, but Dr. Ringwald doesn't give make-up exams. If any student must be absent for a valid reason (job interview, illness documented by a physician's note), that student's grade for that exam will be voided and the remainder of the grade counted as 100%.

Class web page: http://zimmer.csufresno.edu/~fringwal/phys150.html

There are no computing prerequisites or lab for this course, so the emphasis will be on pencil-and-paper theory. Spring semester is the bad-weather time of year for Fresno, so observing will not be an official part of this class, although observing opportunities may be announced during the semester if they arise.

Too many students treat doing their homework and their assigned readings as dreadful chores. Please remember that astronomy is an elective course and a competitive profession. If working the homework problems and doing the readings isn't fun for you, something is wrong.

Please make every effort to attend every one of these meetings, star parties, and other events. If you don't, Dr. Ringwald will notice. He will also wonder whether you know that most other professions pay more for less effort than astronomy does.


  • Research Papers: Writing is a key skill for everyone. No scientific investigation is complete until it becomes known to the world. Scientists do this by writing papers and publishing them. Too many important scientific discoveries have been ignored for years because the scientists did a poor job of writing up the results, in ways that other people could understand.

    Dr. Ringwald will therefore assign a paper, over 4000 words long, due on the last day of instruction. Since Dr. Ringwald takes this so seriously, he personally reads and grades every one, so make them good!

    These papers should be well-thought-out, polished, beautiful gems, not big loads of ore. It will help to focus on a specific topic. A 4000-word paper titled "Stars" can't be very good; stars are complex, and whole books have been written about them. A 4000-word paper on star formation would be a little better, but still, star formation is a vast topic in itself. More like it would be a 4000-word paper on the youngest protostars (also called Class 0).

    As another example, a 4000-word paper on "Black Holes" is unlikely to be anything but superficial: whole books have been published on black holes. Pick one black hole, such as the one in V404 Cygni or M87; or pick some aspect of black holes, such as why we think they exist, or how they can evaporate, or how they might be gateways to other Universes.

    As yet another example, a 4000-word paper on the Sun would not do our magnificent star justice. A 4000-word paper on the solar neutrino problem may not work, either. What might work would be a 4000-word paper on the recent discovery of neutrino mass with the Super-Kamiokande detector, and its implications for the solar neutrino problem. Other topics that may work may be just one of the many observational results from the SOHO spacecraft, such as the discoveries of how the corona is heated, flare-induced Sun-quakes, or rivers or tornados on the Sun.

    For ideas, see the text, including chapters we haven't yet read, as well as current and back issues of reputable popular magazines such as Sky & Telescope, Astronomy, Mercury, Scientific American, and New Scientist. Articles in these magazines are what your papers should be like.

    Feel free to use the World Wide Web for research, too, but be careful of what you use, since there's a great deal of rubbish on the web. When using the web for research, be sure as always to reference your sources, by listing their web addresses, also called URLs. Because everything on the web is subject to change without notice, it is also essential to list the date that appears on the page to indicate when it was last updated, as in the above example. If no such date appears on the page, list the version number appearing on the page. If there is no version number, then list the date you consulted the page.

    Having something to say in your paper is essential. How you write it is also important: good content is so much better if it's written in a way that's clear and easy to understand. For hints on writing, see The Elements of Style, by W. B. Strunk and E. B. White. This little book is available in the campus bookstore for $6.95. (There will be plenty unsold on the PSci 21 shelf.) There is now an online version, too. Read it from cover to cover twice a year, for life!

    These papers may be on any topic in contemporary or historical astronomy, space exploration, or related sciences. A typed (or computer printed) paper title and short summary (between 150 and 250 words) is due on April 23. You're allowed to change your topic after this if you discover something better: this is something I like particularly about science.

    Papers must be typed (or computer printed), on standard 8.5-inch x 11-inch paper with standard, one-inch margins, and preferably double-spaced. Use a readable 12-point serif font such as Times or Computer Modern Roman—not Chicago, Helvetica, Monaco, or Geneva, which are sans serif and hard to read in large doses.

    These papers must provide a list of references, or works cited. Not doing so can turn an "A" paper into a "B" paper. There must be at least five references. No more than two of these five can web addresses. You may use more references than this required minimum: indeed, if you want an A, you should have substantially more.

    Here are some useful ways to list references:

    Knowing how the references were used is also important. You should therefore cite references in the text, especially when making statements of fact that aren't well-known or immediately obvious. Give the author's name and the year of publication, so your reader can easily match up the statements with the references. Here are three different examples of how to cite references in the text:

    Here, Smith (1993) and Horne (1994) were journal articles, but Warner (1995) was a book. Note that with the case of Horne (1994), one can put the author's name into the sentence, useful for emphasizing that Horne did this work.

    You need not use this exact format for citing references, but do use a format precise enough so that I can look the references up myself. I get frustrated whenever a student writes something interesting, but gives a reference that's so imprecise, I can't find out more about it!

    Here are some other tips on writing:

    This is how Dr. Ringwald grades papers:

  • Students with Disabilities: Upon identifying themselves to the instructor and the university, students with disabilities will receive reasonable accommodation for learning and evaluation. For more information, contact Services to Students with Disabilities in the University Center Room 5 (559-278-2811).

  • Honor Code: Members of the California State University, Fresno academic community adhere to principles of academic integrity and mutual respect while engaged in university work and related activities. Students should:

    (a) understand or seek clarification about expectations for academic integrity in this course (including no cheating, plagiarism and inappropriate collaboration)

    (b) neither give nor receive unauthorized aid on examinations or other course work that is used by the instructor as the basis of grading.

    (c) take responsibility to monitor academic dishonesty in any form and to report it to the instructor or other appropriate official for action.

    Instructors may require students to sign a statement on exams and assignments that “I have done my own work and have neither given nor received unauthorized assistance on this work." (This section on the honor code was a required syllabus policy statement by Fresno State.)

  • Cheating and Plagiarism: Cheating is the actual or attempted practice of fraudulent or deceptive acts for the purpose of improving one's grade or obtaining course credit; such acts also include assisting another student to do so. Typically, such acts occur in relation to examinations. However, it is the intent of this definition that the term 'cheating' not be limited to examination situations only, but that it include any and all actions by a student that are intended to gain an unearned academic advantage by fraudulent or deceptive means. Plagiarism is a specific form of cheating which consists of the misuse of the published and/or unpublished works of others by misrepresenting the material (i.e., their intellectual property) so used as one's own work. For more information on the University's policy regarding cheating and plagiarism, refer to the Class Schedule (Legal Notices on Cheating and Plagiarism) or the University Catalog (Policies and Regulations). (This paragraph was a required syllabus policy statement by Fresno State.)

    DO NOT EVER take papers from the Internet, and turn them in as your work. This is now easy for professors to detect, with www.plagiarism.org. Remember, always: you are responsible for anything that you turn in with your name on it.

    Modifying someone else's paper slightly, or changing the words around, or stringing someone else's paragraphs together, even if they're cited, is no better: none of these dubious practices make it your paper. For information on the University's policy regarding cheating and plagiarism, refer to the Schedule of Courses (Legal Notices on Cheating and Plagiarism) or the University Catalog (Policies and Regulations).

    To prevent plagiarism, Dr. Ringwald will be copying both the paper titles and summaries and the papers themselves. If Dr. Ringwald finds a plagiarized paper, the student will receive an F for the entire PSci 21 course. Dr. Ringwald may also send the plagiarized paper to the Dean and recommend the student be expelled from the University. Do NOT plagiarize!

    Dr. Ringwald will be photographing this class several times, to get to know the class, and during exams, to prevent various forms of cheating.

  • Computers: At California State University, Fresno, computers and communications links to remote resources are recognized as being integral to the education and research experience. Every student is required to have his/her own computer or have other personal access to a workstation (including a modem and a printer) with all the recommended software. The minimum and recommended standards for the workstations and software, which may vary by academic major, are updated periodically and are available from Information Technology Services (http://www.csufresno.edu/ITS/) or the University Bookstore. In the curriculum and class assignments, students are presumed to have 24-hour access to a computer workstation and the necessary communication links to the University's information resources. (This paragraph was a required syllabus policy statement by Fresno State.)

  • Disruptive Classroom Behavior: The classroom is a special environment in which students and faculty come together to promote learning and growth. It is essential to this learning environment that respect for the rights of others seeking to learn, respect for the professionalism of the instructor, and the general goals of academic freedom are maintained. Differences of viewpoint or concerns should be expressed in terms which are supportive of the learning process, creating an environment in which students and faculty may learn to reason with clarity and compassion, to share of themselves without losing their identities, and to develop and understanding of the community in which they live. Student conduct which disrupts the learning process shall not be tolerated and may lead to disciplinary action and/or removal from class. (This paragraph was a required syllabus policy statement by Fresno State.)

  • Copyright policy: Copyright laws and fair use policies protect the rights of those who have produced the material. The copy in this course has been provided for private study, scholarship, or research. Other uses may require permission from the copyright holder. The user of this work is responsible for adhering to copyright law of the U.S. (Title 17, U.S. Code). To help you familiarize yourself with copyright and fair use policies, the University encourages you to visit its copyright web page: http://www.csufresno.edu/library/libraryinformation/campus/copyright/copyrtpolicyfull.pdf
    For copyright Questions & Answers: http://www.csufresno.edu/library/libraryinformation/campus/copyright/faqcopyright.pdf
    (This paragraph was a required syllabus policy statement by Fresno State.)

  • Other astronomy courses at Fresno State include:

  • This syllabus and schedule are subject to change in the event of extenuating circumstances, such as poor weather. If you are absent from class, it is your responsibility to check on announcements made while you were absent.


    Go to Dr. Ringwald's home page

    Last updated 2008 June 19. Web page by Dr. Ringwald ( ringwald@csufresno.edu )
    Department of Physics, California State University, Fresno. Please read this disclaimer.