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Grb 250702b

All articles tagged with #grb 250702b

space21 days ago•3 min saved

Seven-Hour Gamma-Ray Burst Suggests a New Stellar Merger Engine

Astronomers using the Fermi Gamma-ray Space Telescope detected GRB 250702B, a gamma-ray burst lasting about seven hours—the longest on record—challenging standard GRB models. A helium-merger scenario, where a black hole accretes a helium star and transfers angular momentum to power an unusually long jet, offers a natural explanation. Future work with the COSI gamma-ray telescope, set to launch in 2027, aims to find more long-duration GRBs to unravel the underlying physics.

via BBC Sky at Night Magazine|

#black-holes #gamma-ray-bursts #grb-250702b

science1 month ago•4 min saved

Astronomers Mystified by Unprecedented Seven-Hour Gamma-Ray Burst

A record-breaking gamma-ray burst lasting nearly seven hours was observed, challenging existing models of such cosmic explosions. The event, originating from a dusty galaxy billions of light-years away, involved a high-speed jet of material and may have resulted from various extreme astrophysical processes. This unprecedented observation offers a unique opportunity to study extreme physics in the universe.

via SciTechDaily|

#astronomy #cosmic-explosion #gamma-ray-burst

science2 months ago•2 min saved

Unprecedented Deep Space Explosions and Black Hole Mysteries

Scientists observed GRB 250702B, the longest gamma-ray burst ever recorded, lasting over seven hours and originating from a dusty galaxy 8 billion light-years away, challenging existing models of such explosions and possibly caused by a massive star's death, a black hole merger, or a helium star-black hole interaction.

via Live Science|

#deep-space #gamma-ray-burst #grb-250702b

science2 months ago•3 min saved

Unprecedented 7-Hour Deep Space Explosion Baffles Scientists

Scientists observed the longest gamma-ray burst ever recorded, GRB 250702B, which lasted over seven hours and originated from a dusty galaxy 8 billion light-years away, challenging existing models of such explosions and possibly caused by the death of a massive star, a black hole merger, or a related event.

via Yahoo|

#deep-space #gamma-ray-burst #grb-250702b

science3 months ago•4 min saved

Unique Long-Lived Gamma-Ray Burst Challenges Existing Theories

Astronomers observed GRB 250702B, a gamma-ray burst with an unprecedented duration of nearly a day and possible repetition, originating from a large, dusty galaxy over five billion light-years away. Its unusual characteristics suggest it may result from an exotic event such as a massive star collapse, a tidal disruption event, or a black hole-star merger, potentially indicating a new type of cosmic explosion.

via Yahoo|

#black-hole-merger #galaxy #gamma-ray-burst

science4 months ago•4 min saved

Scientists uncover unprecedented cosmic phenomena involving black holes and gamma-ray bursts

Astronomers have recorded the longest gamma-ray burst ever, GRB 250702B, lasting about 7 hours, which may have been powered by a black hole merging with a star, indicating a potentially new type of cosmic event beyond traditional models.

via Earth.com|

#black-hole-merger #cosmic-event #gamma-ray-burst

science4 months ago•3 min saved

Black Hole's Unusual Encounter with a Star Sparks Gamma-Ray Mysteries

Astronomers observed an unusually long and repeating gamma ray burst, GRB 250702B, which may be caused by a stellar-mass black hole devouring a star from the inside, challenging existing theories about such cosmic events.

via Futurism|

#black-hole #cosmic-explosion #gamma-ray-burst

science5 months ago•5 min saved

Astronomers Encounter Unprecedented Long-Lasting and Repeating Gamma-Ray Burst

Astronomers observed an unprecedented gamma-ray burst, GRB 250702B, lasting nearly a day with multiple outbursts, originating from beyond our galaxy, possibly caused by a black hole disrupting a star or a white dwarf passing near an intermediate-mass black hole, challenging existing models of gamma-ray bursts.

via Earth.com|

#astrophysics #black-hole #extragalactic

science5 months ago•3 min saved

Unprecedented Long-Lasting Gamma-Ray Burst Challenges Space Science

Astronomers observed the longest and most unusual gamma-ray burst ever, GRB 250702B, which repeated and lasted about a day, challenging current models and suggesting the involvement of an intermediate mass black hole or a unique stellar event, marking a significant breakthrough in understanding cosmic explosions.

via ScienceAlert|

#black-hole #cosmic-mystery #gamma-ray-burst

science5 months ago•3 min saved

Unprecedented Long-Lasting Gamma-Ray Burst Challenges Space Science

Astronomers observed a record-long, repeating gamma-ray burst, GRB 250702B, which challenges current understanding of such cosmic explosions, possibly involving an intermediate mass black hole or a unique star death, marking a significant breakthrough in astrophysics.

via yahoo.com|

#black-hole #cosmic-mystery #gamma-ray-burst

science5 months ago•4 min saved

Record-Breaking Gamma-Ray Burst Challenges Existing Theories

Astronomers have discovered a unique repeating gamma-ray burst, GRB 250702B, which lasted about a day and originated outside the Milky Way, challenging current understanding of such cosmic explosions and suggesting a potentially new type of astrophysical event.

via Space|

#astronomy #extragalactic #gamma-ray-burst

science5 months ago•4 min saved

Astronomers Uncover Unique Repeating Gamma-Ray Burst

Astronomers have discovered a unique repeating gamma-ray burst, GRB 250702B, which lasted about a day and erupted multiple times, unlike typical GRBs. Initially detected by NASA's Fermi telescope, further observations confirmed it originated outside the Milky Way, making it the first of its kind observed in 50 years. Its unusual behavior challenges existing theories about gamma-ray bursts, and further studies are underway to understand its cause.

via yahoo.com|

#astronomy #cosmic-explosion #gamma-ray-burst

science5 months ago•3 min saved

Record-Breaking and Unprecedented Gamma-Ray Bursts Challenge Existing Theories

Astronomers have discovered a record-breaking, unusually long gamma-ray burst, GRB 250702B, which lasted about a day and originated from a galaxy billions of light-years away. Its peculiar duration and repeated signals challenge existing theories about such cosmic explosions, suggesting a possible involvement of an intermediate black hole and a white dwarf, but the exact cause remains unknown.

via Gizmodo|

#astrophysics #black-holes #gamma-ray-bursts