Discovery of Fast-Evolving Ultracompact White Dwarf Binary eRASSU J0608

24 September, 2026

1 min read

•Daily Current Affairs

Topic	Details
Discovery	eRASSU J0608-704014 (eRASSU J0608), an ultracompact double white dwarf binary, was identified by an Indian-led international team.
Key Finding	The orbit is decaying rapidly at 4.7 × 10⁻¹¹ seconds per second, attributed to gravitational wave emission.
Observations	Monitored for 3.5 years using NASA's NICER, China's Einstein Probe, and ESA's XMM-Newton.
Gravitational Waves	A potential verification source for future detectors like LISA (Laser Interferometer Space Antenna, ESA, planned launch 2035).

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