Back to today’s briefing

Story perspectives

Longest-Lived Binary Star Reveals Stable Radio Pulses

1/31/2026

49 8

Summary

Story summary

GPM J1839-10 is identified as the longest-lived long-period transient (LPT) with a 21-minute period, about 15,000 light-years away.
The binary includes a white dwarf and a red dwarf, producing radio pulses through their interaction.
A study in Nature Astronomy shows a stable pulse pattern that repeats every nine hours.
Researchers say the findings strengthen the link between LPTs and white dwarf pulsars and aim to clarify emission mechanisms.

1 of 1

Story summary

GPM J1839-10 is identified as the longest-lived long-period transient (LPT) with a 21-minute period, about 15,000 light-years away.
The binary includes a white dwarf and a red dwarf, producing radio pulses through their interaction.
A study in Nature Astronomy shows a stable pulse pattern that repeats every nine hours.
Researchers say the findings strengthen the link between LPTs and white dwarf pulsars and aim to clarify emission mechanisms.