User talk:Mordecai

Supernova

I just wanted to say thank you for your improvements to the supernova article, and particularly for your corrections to the asymmetry section. — RJH (talk) 15:44, 12 February 2007 (UTC)[reply]

You're welcome! Your hard work on the supernova article has tamed a real monster. It had grown quite out of control. Please feel free to ask for further review of astrophysics articles -- I don't have time to regularly edit, but I do poke my head in every few weeks, and would be happy to focus my attention where it would be most valuable. Mordecai-Mark Mac Low 17:37, 12 February 2007 (UTC)

Thank you, sir. You're too kind. — RJH (talk) 15:49, 13 February 2007 (UTC)[reply]

AMNH

I have a friend who is going to be in the city at the same time. Would it be possible for her to come along on the tour? JoshuaZ (talk) 16:01, 2 January 2008 (UTC)[reply]

It's going to be a big enough group that one more shouldn't be a problem... though I'm not actually the one either organizing or giving the tour personally (Just the dept chair nodding appreciatively to seeing it happen...) Mordecai-Mark Mac Low (talk) 19:25, 2 January 2008 (UTC)[reply]

Carbon monoxide

FYI, I took up your charge from some time ago to write a short bit about CO in astrophysics. —Alex (ASHill | talk | contribs) 23:37, 21 January 2012 (UTC)[reply]

Oh, good deal! Mordecai-Mark Mac Low (talk) 05:02, 2 July 2012 (UTC)[reply]

Superbubble

Hi Mordecai,

I found an article http://iopscience.iop.org/1538-3881/119/3/1317/fulltext/990528.text.html claiming that SNRs are hard to detect inside superbubbles: the exact paragraph is:

    SNRs in superbubbles cannot be confirmed easily by the conventional diagnostics of nonthermal radio emission and a high [S II]/Hα line ratio. The radio and optical emission of SNRs in superbubbles is weak because the SNRs interact with a low-density medium. Their weak, nonthermal radio emission is further drowned out by thermal emission from bright background H II regions. The [S II] line strength is weakened because sulfur may be photoionized to higher ionization stages by the UV radiation from the OB associations in the superbubble. Therefore, the conventional methods for identifying SNRs are ineffective for SNRs in superbubbles.

I would like to insert this information into the article. Your statement that visible SNRs are not formed inside superbubbles seems misleading to me, since the only problem seems to be that their radiation is masked, and that masking is, of course, temporary. What do you think? Vegasprof (talk) 13:32, 1 August 2013 (UTC)[reply]

Sorry that this is a rather delayed reply! Although masking is mentioned in your excerpt, the primary problem is the simple lack of emission in a low-density medium, as also made clear there. This is not a temporary problem, but rather one that continues throughout the SNR lifetime, as inside low-density, hot, superbubbles, the blast wave quickly decays to the sound speed (Mac Low & McCray 1988, Astrophysical Journal) Mordecai-Mark Mac Low (talk) 00:39, 27 August 2014 (UTC)[reply]

Capitals of the Western Roman Empire

I noted your question about Trier on the talk page of Decline of the Roman Empire. (Heading 34 on https://en.wikipedia.org/wiki/Talk:Decline_of_the_Roman_Empire ). My understanding is that after CE 286 the capital of the Western Empire went on the wander as it were, first to Milan, then to Trier and Arles, and back to Milan, possibly with other stops en route before finally coming to rest in Ravenna in CE 402. I can't provide the kind of sources needed in a Wikipedia article, but this statement in the article on Milan may provide a starting-point of sorts:

Milan was declared the capital of the Western Roman Empire by Emperor Diocletian in 286 AD. Diocletian chose to stay in the Eastern Roman Empire (capital Nicomedia) and his colleague Maximianus ruled the Western one.

https://en.wikipedia.org/wiki/Talk:Decline_of_the_Roman_Empire

See also the Wikipedia article on the History of Trier:

From 367, under Valentinian I, Trier once more became an imperial residence (lasting until the death of Theodosius I in 395) and remained the largest city north of the Alps. It was for a few years (383 – 388) the capital of Magnus Maximus, who ruled most of the western Empire.

https://en.wikipedia.org/wiki/History_of_Trier#Roman_Empire

What is really meant by the word capital in these contexts beyond something like Western emperor's main or favourite seat of residence is unclear. Sorry I can't be more helpful. Perhaps someone well qualified will write an article on "The Western Roman Empire's Wandering Capital". Norvo (talk) 03:05, 12 March 2014 (UTC)[reply]

Interesting! Well, while you may not have reached the level of sourcing for an edit to the article, you have certainly expanded my knowledge! Mordecai-Mark Mac Low (talk) 00:41, 27 August 2014 (UTC)[reply]

September 2019

Thank you for your contributions. It seems that you may have added public domain content to one or more Wikipedia articles, such as Technology readiness level. You are welcome to import appropriate public domain content to articles, but in order to meet the Wikipedia guideline on plagiarism, such content must be fully attributed. This requires not only acknowledging the source, but acknowledging that the source is copied. There are several methods to do this described at Wikipedia:Plagiarism#Public-domain sources, including the usage of an attribution template. Please make sure that any public domain content you have already imported is fully attributed. Thank you. — Diannaa 🍁 (talk) 19:13, 6 September 2019 (UTC)[reply]