Collapsed hypergiant forms a gamma ray pulsating black hole

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Discussion Overview

The discussion revolves around the formation of gamma ray pulsating black holes from collapsed hypergiants, focusing on the mechanisms of electromagnetic radiation emission and the characteristics of hypernova events. Participants explore theoretical aspects, potential models, and the implications of stellar collapse.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant expresses confusion about how electromagnetic radiation can escape the event horizon of a black hole, questioning the energy and speed of such radiation.
  • Another participant clarifies that radiation is emitted by matter falling into the black hole before crossing the event horizon, suggesting that the hypernova results from the core collapsing directly into a black hole, with the remaining mass forming an accretion disk that emits radiation at the rotational poles.
  • A similar point is reiterated by another participant, emphasizing the role of the accretion disk in radiation emission and comparing the event to active galactic nuclei (AGN).
  • Another participant introduces the idea that hypernovae are generally believed to originate from the collapse of Population III stars, noting the complexities introduced by metallicity and its effects on collapse events, and mentioning colliding neutron stars as a potential explanation for short gamma bursts.

Areas of Agreement / Disagreement

Participants present differing views on the mechanisms of radiation emission and the nature of hypernovae, indicating that multiple competing models and hypotheses remain without consensus.

Contextual Notes

Participants highlight uncertainties regarding the role of metallicity in stellar collapse and the conditions under which gamma bursts occur, suggesting limitations in current understanding.

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I am having a hard time understanding the theory that a collapsed hypergiant forms a gamma ray pulsating black hole. Can someone explain how the em radiation can travel so fast with such energy as to not only escape the event horizon but also do so with such intensity?
 
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The radiation does not escape the event horizon. It is released by matter falling into the black hole before it crosses the event horizon. The Hyper nova is caused when the core collapses directly into a black hole. The remaining mass of the star forms an accretion disk, and it is this matter that creates the radiation emitted at the rotational poles.
 


Janus said:
The radiation does not escape the event horizon. It is released by matter falling into the black hole before it crosses the event horizon. The Hyper nova is caused when the core collapses directly into a black hole. The remaining mass of the star forms an accretion disk, and it is this matter that creates the radiation emitted at the rotational poles.

Other than the magnitude and size of the event, it is not materially different from an AGN, or any accreting body, correct?
 


Hypernova are generally believed to form from the collapse of pop III stars. None are known to exist locally. Metallicity messes with collapse events in ways we do not understand. Lack of metallicity is believed to allow gamma bursts. Colliding neutron stars are the other suspect, these may explain short gamma bursts.
 

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