Can one cosmic enigma help solve another?

Astrophysicists from the Johns Hopkins University have proposed a clever new way of shedding light on the mystery of dark matter, believed to make up most of the universe.

more…

FRB a clue to DM? Yeah somewhat. If you want to bust your head round in a circle……..

> If roughly 30-solar-mass primordial black holes are dark matter

Huh?

The possibility that primordial black holes are dark matter was ruled out in 1993. The small number of microlensing events observed between us and the Large Magellanic Cloud ruled out the possibility. It’s known that most of the dark matter in the Milky Way is in its halo, and there is plenty of halo between us and the LMC.

mollwollfumble said:

> If roughly 30-solar-mass primordial black holes are dark matter

Huh?

The possibility that primordial black holes are dark matter was ruled out in 1993. The small number of microlensing events observed between us and the Large Magellanic Cloud ruled out the possibility. It’s known that most of the dark matter in the Milky Way is in its halo, and there is plenty of halo between us and the LMC.

As for the enigma of what causes fast radio bursts, that remains an enigma. Little Green Men still remains a possibility, but pulsars have been just about ruled out, because the bursts detected so far are not aligned with the plane of the Milky Way. Other possibilities would be – perhaps – AGNs/quasars or some exotic form of dark matter in the halo of the Milky Way. There’s not much else they could be.

mollwollfumble said:

mollwollfumble said:

> If roughly 30-solar-mass primordial black holes are dark matter

Huh?

The possibility that primordial black holes are dark matter was ruled out in 1993. The small number of microlensing events observed between us and the Large Magellanic Cloud ruled out the possibility. It’s known that most of the dark matter in the Milky Way is in its halo, and there is plenty of halo between us and the LMC.

As for the enigma of what causes fast radio bursts, that remains an enigma. Little Green Men still remains a possibility, but pulsars have been just about ruled out, because the bursts detected so far are not aligned with the plane of the Milky Way. Other possibilities would be – perhaps – AGNs/quasars or some exotic form of dark matter in the halo of the Milky Way. There’s not much else they could be.

FRB=Refraction path of what I can only describe as a Hawking/Graviton particle, at this point.

mollwollfumble said:

mollwollfumble said:

> If roughly 30-solar-mass primordial black holes are dark matter

Huh?

The possibility that primordial black holes are dark matter was ruled out in 1993. The small number of microlensing events observed between us and the Large Magellanic Cloud ruled out the possibility. It’s known that most of the dark matter in the Milky Way is in its halo, and there is plenty of halo between us and the LMC.

As for the enigma of what causes fast radio bursts, that remains an enigma. Little Green Men still remains a possibility, but pulsars have been just about ruled out, because the bursts detected so far are not aligned with the plane of the Milky Way. Other possibilities would be – perhaps – AGNs/quasars or some exotic form of dark matter in the halo of the Milky Way. There’s not much else they could be.

They could be “blitzars”. I know, I’ve never heard about it either.

“Because of the isolated nature of the observed phenomenon, the nature of the source of FRBs remains speculative. As of 2016, there is no generally accepted explanation. The emission region is estimated to be no larger than a few hundred kilometers. If the bursts come from cosmological distances, their sources must be very bright.”

https://en.wikipedia.org/wiki/Blitzar
“Blitzars are a hypothetical type of astronomical object in which a spinning pulsar rapidly collapses into a black hole. They are proposed as an explanation for fast radio bursts (FRBs). The idea was proposed in 2013 by Heino Falcke and Luciano Rezzolla.”

mollwollfumble said:

mollwollfumble said:

mollwollfumble said:

> If roughly 30-solar-mass primordial black holes are dark matter

Huh?

The possibility that primordial black holes are dark matter was ruled out in 1993. The small number of microlensing events observed between us and the Large Magellanic Cloud ruled out the possibility. It’s known that most of the dark matter in the Milky Way is in its halo, and there is plenty of halo between us and the LMC.

As for the enigma of what causes fast radio bursts, that remains an enigma. Little Green Men still remains a possibility, but pulsars have been just about ruled out, because the bursts detected so far are not aligned with the plane of the Milky Way. Other possibilities would be – perhaps – AGNs/quasars or some exotic form of dark matter in the halo of the Milky Way. There’s not much else they could be.

They could be “blitzars”. I know, I’ve never heard about it either.

“Because of the isolated nature of the observed phenomenon, the nature of the source of FRBs remains speculative. As of 2016, there is no generally accepted explanation. The emission region is estimated to be no larger than a few hundred kilometers. If the bursts come from cosmological distances, their sources must be very bright.”

https://en.wikipedia.org/wiki/Blitzar
“Blitzars are a hypothetical type of astronomical object in which a spinning pulsar rapidly collapses into a black hole. They are proposed as an explanation for fast radio bursts (FRBs). The idea was proposed in 2013 by Heino Falcke and Luciano Rezzolla.”

That sounds like a fair way to create a graviton. Without having confined instanton dynamics exhaustively I can’t be certain but the suggestion seems to be that a graviton is a fully collapsed instanton that may possibly exhibit mono-polaric characteristics.