Talk:Blazar

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grammar

"In astronomy, blazar, also known as BL Lac Objects or BL Lacertaes, are bright, starlike objects that can vary rapidly in their luminosity." ???

There is a verb missing, probably it's "change"=

BL Lac

Wait, isn't BL-Lacertae a subtype of Blazar... so the two terms are not equivalent, right? 132.205.45.148 01:15, 3 Sep 2004 (UTC)

BL Lac vs Blazar

BL Lac and Blazar are not the same things. BL Lac objects are specific types of active galaxies, while Blazars are a grabbag of several different kinds of active galaxies, including BL Lac objects, and some subtypes of quasars, amongst others.

This article needs to be separated into Blazar and BL Lac, and cleaned up to separate the content properly.

132.205.15.4 03:37, 9 Sep 2004 (UTC)

made some major changes

I added a great deal of new information to this article, and will be adding more (along with some images) soon. Hopefully by the end of today.

The new changes emphasize that blazars are composed of two groups OVV quasars and BL Lacertae objects, the relativistic model (and therefore the unified model connected blazars with radio galaxies) is by far the best overall model. Also more specific details on the structure of a Blazar (basically the generic structure of an AGN).

I am working on adding a more comprehensive history connected the first qusars with blazars (3C 273 is a blazar, BL Lac identified in the 70s), and will mention more details about jet emission (synchrotron, inverse-Compton, and also the "blue bump" and emission lines in quasars). Also, not least, will tack on relevant references.

I also added a couple of short references like "host galaxy," and will treat the "relativistic jet" entry as another big one.

I used to do research in this topic (during the 90s), but that seems like another lifetime ago so it is quite possible I have screwed up by omission or stupidity. By all means feel free to check this all out.

Mrbrak (real_mrbrak@yahoo.com)

Added more stuff - on relativistic beaming

I added a section on relativistic beaming, I'll stick some of the math (for a simple optically thin, synchrotron blob model of a jet) in a different article.

Copyright Violation

File:Galaxies AGN Jet Line-of-Sight.jpg

File:Galaxies AGN Jet Properties-with-LoS.jpg

Please delete these images. I do not have permission of all of the authors of the original scientific article they were published in to publish them here.

Mr Brak 20:40, 17 April 2006 (UTC)[reply]

Sources?

I'd like to see some sources listed for this article. Not only because it's good for the wiki, but I also have to write a bit about blazars for a course project and I don't want to quote the wiki without having something to back me up =) --19:18, 9 May 2006 (UTC)

blazar = gamma ray quasars?

According to this [1] (NASA), blazars are gamma ray emitting quasars... 70.55.85.134 (talk) 07:51, 15 July 2008 (UTC)[reply]