A Diary of the Other Place

Posted in Biographical, The Universe and Stuff with tags , , , , on October 1, 2019 by telescoper

The arrival yesterday of this year’s Royal Astronomical Society diary reminded (for obvious reasons) that next year (2020) sees the bicentenary of the Society and that there will be a number of special events to mark the occasion.

According to the brief history published on the RAS website:

The ‘Astronomical Society of London’ was conceived on 12 January 1820 when 14 gentlemen sat down to dinner at the Freemason’s Tavern, in Lincoln’s Inn Fields, London. After an unusually short gestation the new Society was born on 10 March 1820 with the first meeting of the Council and the Society as a whole. An early setback, when Sir Joseph Banks induced the Duke of Somerset to withdraw his agreement to be the first President, was overcome when Sir William Herschel agreed to be the titular first President, though he never actually took the Chair at a meeting.

The Society became the `Royal Astronomical Society’ in 1831 when it was granted a Royal Charter by William IV, but this is no time to be quibbling about names.

It’s not only the Royal Astronomical Society that has survived and prospered for two hundred years. The group of `gentlemen’ who met for dinner in January 1820 has also carried on in the form of the RAS Club which is, of course, older than the RAS itself.

As well as being a Fellow of the Royal Astronomical Society (and having twice served on its Council), I also have the honour of having been elected a Member of the RAS Club about 11 years ago. I blogged about this here.

The members of the RAS Club are all Fellows of the Royal Astronomical Society. All you have to do to join the Royal Astronomical Society is to find two Felllows to support you, pay some money and sign your name in a book, but to get into the RAS Club you have to be elected by the existing membership. Nominations are solicited each November (via a process called `The Naming of Names’) and the elections held – usually with a great deal of confusion about the voting system – in January. Frankly, it’s all a bit dotty, but I like it. I don’t really carte much for the real world anyway. The club’s various little rituals are a bit bizarre, but quaintly amusing in their own way, and the proceedings are remarkably lacking in pomposity.

Nowadays, the RAS Club usually meets at the Athenaeum in Pall Mall, shortly after the end of the monthly `Ordinary Meetings’ of the RAS at Burlington House (always referred to at the Club as `another place’) which happen on the second friday of each month. That is except when the RAS meeting is the annual National Astronomy Meeting (NAM) which is held at a different location each year; on these occasions the club also meets, but at an appropriate alternative venue near the NAM location.

I think the RAS Club (and even the RAS itself) is sometimes viewed with suspicion and perhaps even hostility by some astronomers, who seem to think the club is a kind of sinister secret society whose existence is intrinsically detrimental to the health of astronomy in the UK. Actually it’s just an excuse for a good nosh-up and some daft jokes, although I was initially disappointed to find out that there wasn’t after all a covert plan for world domination. Or if there is, nobody told me about it.

The other common complaint is that the club’s membership is just a bunch of old male dinosaurs. Now it is true that your typical member of the RAS Club isn’t exactly in the first flush of youth, but that’s no excuse for ageism. And the club does try very hard to secure encourage nominations from female Fellows and the gender balance is improving steadily.

The diary reminded me also that the first meeting of the RAS of the new term, and hence the first Club dinner, will be on Friday October 11th. I hope to be there to find out more about the plans for the bicentennial dinner in January 2020…

Anyway, as a postscript, although many of my colleagues seem not to use them, I like old-fashioned diaries like the one above. I do run an electronic calendar for work-related events, meetings etc, but I use the paper one to scribble down extra-curricular activities such as concerts and cricket fixtures, as I find the smartphone version of my electronic calendar a bit fiddly. I’m interested to know the extent to which I am an old fogey so here’s a little poll on the subject of diaries:

The Problem of the Disintegrating Asteroid

Posted in Cute Problems, The Universe and Stuff with tags , , on September 30, 2019 by telescoper

I thought you might enjoy this entry in the Cute Problems folder.

An asteroid is moving on a circular orbit around the Sun with an orbital radius of 3AU when it spontaneously splits into two fragments, which initially move apart along the direction of the original orbit. One fragment has a speed which is a fraction 0.65 of the original speed, the other has a speed of 1.35 times the original speed. The original orbit (solid line) is shown above, along with the two new orbits (dashed and dotted).

  1. Which orbit does the fast fragment follow, and which the slow fragment?
  2.  Calculate the original orbital speed in AU/year.
  3. Calculate the angular momentum per unit mass, h, of the original asteroid and of each of the two fragments in units of AU2 per year. [HINT: Show that in these units, for a general orbit of eccentricity e and semi-major axis a, h2=4π2 a (1-e2).]
  4.  Calculate the eccentricities of the orbits of the two fragments.
  5.  Calculate the orbital periods of the two fragments in years.

Answers please through the Comments box. First complete set of answers wins a trip to the Moon on gossamer wings.

 

 

More on Comments

Posted in Uncategorized with tags , , on September 29, 2019 by telescoper

At the end of the month I usually give the blog a bit of a clean out, especially the blocked comments that have accumulated in my filter. Here’s just a sample of the contributions from my admirer, Mr Hine. These are just a few of the dozens of comments he’s failed to post here. No doubt he’ll try to post some more gibberish when he sees this but although I know it makes me a bad person, I just can’t resist winding him up.

A Drunk and Disorderly Brexit

Posted in Politics with tags , , on September 28, 2019 by telescoper

Having to return to Parliament following the Supreme Court’s unanimous (and undoubtedly correct) decision that Boris Johnson’s attempted prorogation was unlawful seems to have driven certain Tories to drink (or something stronger).

The clip above shows a clearly intoxicated Michael Gove (not just an MP but a Cabinet Minister) in the House of Commons.

More generally I’m sure that alcohol played a big part in the appallingly offensive language and shouty behaviour coming from the Government benches, including from the Prime Minister who, for some reason, has not yet resigned but is regularly too tired and emotional to speak any sense at all. It wouldn’t surprise me if he were to be found dead drunk in a ditch before too long.

The Houses of Parliament are supposed to be places of work for MPs. Most of us would be summarily dismissed if we turned up at our workplace steaming drunk and I don’t see any reason why it should be any different for Members of Parliament.

If I had my way all MPs would be breathalyzed before being allowed to participate in a debate or vote at a division. Anyone over the limit should be barred.

After much sober reflection, I think keeping the drunk and disorderly out of Parliament might not only improve the quality and civility of the debates but also improve the decision-making of the House.

What do you think?

Research Evaluation

Posted in Uncategorized on September 27, 2019 by telescoper

I get quite a few of these spam invitations to fake academic conferences, but I have never had one before with such an obviously back-handed compliment about the quality of my research!

End of Summer Rains

Posted in Cricket, Maynooth with tags , , , on September 26, 2019 by telescoper

The rain is pouring down here in Maynooth, but this isn’t the only place to have had inclement weather today:

The picture above shows the scene this morning at Chester-le-Street in County Durham where the County Championship Division 2 match between Durham and Glamorgan was taking place. Or rather, wasn’t taking place. The game was abandoned this morning owing to a the cumulative effect of heavy rain over the last few days that allowed only 86 overs to be bowled in total over the four days.

This match being declared a draw, Glamorgan finish the season in 4th place on 167 points, missing out on promotion to Division 1 but having performed much better than last season. They were top of the table early on, but the loss of the excellent Marnus Labuschagne to Ashes duty for Australia proved a big blow and they fell back in the second half of the season. Anyway, at least they’ll probably win a few games next season, while they would undoubtedly struggle in Division 1. Lancashire finish top of the Division 2 table by a country mile, while Northants and Gloucester also go up.

I always thing of the last day of the County Championship as the end of summer. This year most of the final round of games has been hit by the weather so it’s a rather damp ending. This is also the first year in a while in which I haven’t seen any live cricket. Still, there’s always next year.

That’s basically all I have time to write about today as I’ve been running around all day – including popping into the library to give the webinar I mentioned yesterday. Moreover, at 6pm local time all the power in the building is going off and we’re to be turfed out while some repair work is done. I’ll shortly have to go round checking all the computers are switched off.

The Open Journal of Astrophysics: Scholastica Webinar Reminder!

Posted in Open Access with tags , on September 25, 2019 by telescoper

Just a quick reminder that tomorrow I’ll be participating in webinar (whatever that is) organized by Scholastica to do a about the Open Journal of Astrophysics, which will involved a short presentation delivered over the interwebs jointly by myself and Fiona Morley (Head of Digital Programmes and Information Systems at Maynooth University Library), followed by a question and answer session. The session will be conducted via Zoom (which is the pretty neat platform we use, e.g., for Euclid teleconference meetings).

Here is the advert:

You can sign up here.

Now I have to figure out what I should say.

Johnson Close To Deal

Posted in Politics with tags , on September 25, 2019 by telescoper

Thank you, Google, but that isn’t really the information I was looking for.

Supreme Predictions

Posted in Politics with tags , , , on September 24, 2019 by telescoper

This morning the Supreme Court delivered a ruling that the UK Government acted unlawfully in its recent prorogation of Parliament and so Parliament is consequently no long prorogued. After its decision in this case that the Prime Minister prorogued Parliament with the intent of stopping it carrying out its duties, I look forward to a similarly shocking ruling in the vexed matter of whether or not ursine mammals defecate in forested areas.

I have noticed over the years that everyone on Twitter is – or at least thinks they are – a legal expert, so not to be outdone I last night posted my own prediction of the Supreme Court ruling:

My legal acumen having been established beyond any reasonable doubt, I mention for the record that I posted this tweet at the same time:

This is the correct way to make predictions in the age of social media.

Diana Ross is 75.

 

 

New Publication at the Open Journal of Astrophysics!

Posted in OJAp Papers, Open Access, The Universe and Stuff with tags , , , , , , , , on September 24, 2019 by telescoper

Yesterday we published another new paper at The Open Journal of Astrophysics, but I didn’t get time to write a post about because of teaching and other start-of-term business so I’m correcting that omission now.

 

The authors are Selim Can Hotinli  of Imperial College London (UK), Marc Kamionkowski of Johns Hopkins University, Baltimore (USA) and Andrew Jaffe, also of Imperial College.

You can find the accepted version on the arXiv here. This version was accepted after modifications requested by the referee and editor. Because this is an overlay journal the authors have to submit the accepted version to the arXiv (which we then check against the copy submitted to us) before publishing; version 2 on the arXiv is the accepted version.

You will see that this is  one for the `Cosmology and Nongalactic Astrophysics’ folder. We would be happy to get more submissions from other areas, especially Stellar and Planetary astrophysics. Hint! Hint!

P.S. Just a reminder that we now have an Open Journal of Astrophysics Facebook page where you can follow updates from the Journal should you wish..