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Longest X-ray flash from neutron star merger candidate reveals possible magnetar birth

Observations of EP250704a/GRB 250704B show a short gamma-ray burst followed by an unusually long X-ray flash (~10 minutes)—the longest prompt X-ray emission linked to neutron star merger. VLT follow-up found no supernova, supporting merger origin possibly forming a magnetar.

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1 Source, 4h ago, first seen 4h ago

TLDR

This event solves part of the mystery surrounding cosmic X-ray flashes from Einstein Probe discoveries. The potential magnetar birth and multi-messenger implications for gravitational wave detection advance understanding of neutron star mergers and extreme astrophysical transients.

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Combined views

1.3K

1 Source, first seen 4h ago

57 likes2 comments16 saves17 reposts

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@cosmosarciveA neutron star is what remains after a massive star collapses, squeezing more than a Sun’s worth of mass into a sphere only about 20–26 km across. Deep inside, matter is compressed beyond anything we can reproduce on Earth. The outer core is expected to contain superfluid neutrons, while the composition of the inner core remains uncertain and may involve exotic forms of matter. The deeper we look into a neutron star, the more its extreme density becomes a laboratory for testing how matter behaves under conditions impossible to create on Earth.
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    @cosmosarciveA neutron star is what remains after a massive star collapses, squeezing more than a Sun’s worth of mass into a sphere only about 20–26 km across. Deep inside, matter is compressed beyond anything we can reproduce on Earth. The outer core is expected to contain superfluid neutrons, while the composition of the inner core remains uncertain and may involve exotic forms of matter. The deeper we look into a neutron star, the more its extreme density becomes a laboratory for testing how matter behaves under conditions impossible to create on Earth.
    Today's Rank

    #5

    Today's Rank

    #5