Recent Posts • Latest Topics • Unanswered Questions

The only difference between double radio sources, quasars, and BL Lacertae objects, in terms of ...

symbo

wrote...

Go to Answer

Posts: 1970

Rep:

7 years ago

The only difference between double radio sources, quasars, and BL Lacertae objects, in terms of ...

The only difference between double radio sources, quasars, and BL Lacertae objects, in terms of appearance, may be

(a)   the angle between the line of sight and the line of the two oppositely directed jets of matter in the source.
(b)   their age, BL Lacertae being the youngest, showing no spectral line emission, quasars intermediate, and double radio sources the oldest, the result of the dying out of the central source of the system.
(c)   their distance from the Earth. Double radio sources are close enough to be resolved, quasars are sufficiently close to show some structure, while BL Lac objects always appear as point sources because of their extreme distance.

Textbook

Discovering the Universe

Edition: 7^th

Authors: Kaufmann, Comins

Read 130 times

1 Reply

Report

Replies

Answer verified by a subject expert

hyponotica

wrote...

Related Topics

symbo Author

wrote...

7 years ago

You make an excellent tutor!

derya1234

wrote...

Yesterday

Thanks

shimyshiguy

wrote...

2 hours ago

Thanks

New Topic

Quick Reply

Explore

Post your homework questions and get free online help from our incredible volunteers

1307 People Browsing

Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook

Live Chat

AJAX Chat © blueimp.net Integrated with SMF

Related Images

243

560

1485

Your Opinion

Previous poll results: Who will win the 2024 president election?

Courses by Biology Forums

The Toxic Skin and Fungi Defense

It's sore throat season, why does my mucus have red spots?

Bonobos, Chimpanzees, and the 98% DNA Link

Strange Ingredients Lurking in Doritos Chips

Ready to ask a question on Biology Forums? Try it out

Join Our Community

Biology Forums - Study Force is a free online homework help service catered towards college and high school students. Get homework help and answers to your toughest questions in biology, chemistry, physics, mathematics, engineering, accounting, business, humanities, and more. Master your assignments quickly with thousands of step-by-step solutions to countless textbook questions asked and answered by our members. If we don't have your question, don't worry. You can ask any homework question and get expert homework help in as little as two hours.

Our extensive online study community is made up of college and high school students, teachers, professors, parents and subject enthusiasts who contribute to our vast collection of study resources: textbook solutions, study guides, practice tests, practice problems, lecture notes, equation sheets and more. With our help, your homework will never be the same!

Join for free today

How is Biology Forums - Study Force different than tutoring?

Home Search Q & A Board Gallery Resource Library Blog Dictionary Chat	Quick Links Start a Topic Latest Topics Unanswered Questions Courses Study Tools Browse by Textbook	Social Facebook YouTube Community Stats Who's Online Trending Staff	Help About Us Take the Tour Study Tips Posting Guidelines Terms and Policies Contact Us
Biology Forums - Study Force © 2010-2024 \| Powered by SMF \| SMF © 2015, Simple Machines \| Sitemap Biology-Forums.com is not affiliated with any publisher. Book covers, title and author names appear for reference only.