Using NASA’s Swift telescope and the Neutron star Interior Composition Explorer (NICER) instrument onboard the International Space Station, Indian astronomers have inspected timing and spectral properties of an X-ray transient known as Swift J1728.9–3613. Their results show that this transient is a black hole X-ray binary. Their findings were detailed in a paper published October 21 on arXiv.org.
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Source: Phys.org