First microlensing extragalactic planets confirmed.

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First microlensing extragalactic planets confirmed.

Post by Daniel on 3rd February 2018, 2:20 pm

Probing Planets in Extragalactic Galaxies Using Quasar Microlensing.

https://arxiv.org/abs/1802.00049v1

Previously, planets have been detected only in the Milky Way galaxy. Here, we show that quasar microlensing provides a means to probe extragalactic planets in the lens galaxy, by studying the microlensing properties of emission close to the event horizon of the supermassive black hole of the background quasar, using the current generation telescopes. We show that a population of unbound planets between stars with masses ranging from Moon to Jupiter masses is needed to explain the frequent Fek line energy shifts observed in the gravitationally lensed quasar RXJ1131-1231 at a lens redshift of z=0.295 or 3.8 billion light-years away. We constrain the planet mass fraction to be larger than 0.0001 of the halo mass, which is equivalent to 2,000 objects ranging from Moon to Jupiter mass per main sequence star.


Last edited by Daniel on 3rd February 2018, 2:49 pm; edited 1 time in total
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Re: First microlensing extragalactic planets confirmed.

Post by Daniel on 3rd February 2018, 2:23 pm

Astrophysicists discover planets in extragalactic galaxies using microlensing

https://phys.org/news/2018-02-astrophysicists-planets-extragalactic-galaxies-microlensing.html
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Re: First microlensing extragalactic planets confirmed.

Post by Edasich on 4th February 2018, 7:57 am

More extrasolar than extrasolar! Laughing
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Re: First microlensing extragalactic planets confirmed.

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