Welcome Guest ( Log In | Register )

Jupiter-mass diamond orbiting pulsar PSR J1719-1438
post Aug 25 2011, 08:28 PM
Post #1


Group: Members
Posts: 692
Joined: 13-June 04
Member No.: 82

This has to be one of the most bizarre planets yet discovered. Not "merely" a pulsar planet, but a Jupiter-sized diamond orbiting a pulsar with a year lasting 2.2 hours. I wonder what the tidal forces are?

(I would think that radio telescopes are covered under "Telescopic Observations")

Pulsar in the Sky, With Diamonds

The object orbiting it is Jupiter mass, with some uncertainty in the exact mass due to as yet unmeasured inclination, has an orbital period of 2.2 hours! That implies an orbital radius less than a solar radius! The orbit is, near as we can tell, perfectly circular. Further, the object is not overflowing its Roche lobe, implying a minimum mean density of 23! Possibly considerably larger.

From both observational constraints, and from theoretical grounds based on models of the origin of the object, it is most likely a pure cold crystalline carbon core of a low mass star, with the rest of the star accreted, blown away and ablated by the millisecond pulsar formation process.

Yes, it is a 10^31 carat diamond. That is 10,000,000 trillion trillion carats of hot sparkly rock!
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic


RSS Lo-Fi Version Time is now: 30th June 2016 - 03:20 AM
Please read the Forum Rules and Guidelines before posting.

Images posted on UnmannedSpaceflight.com may be copyrighted. Do not reproduce without permission. Read here for further information on space images and copyright.

Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators.
Unmannedspaceflight.com is a project of the Planetary Society and is funded by donations from visitors and members. Help keep this forum up and running by contributing here.