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astro-ph.HE2026
Exotic optical variability in the black hole X-ray binary IGR J17091-3624
Payaswini Saikia, David M. Russell, D. M. Bramich +9
IGR J17091-3624 is a distinctive black hole X-ray binary exhibiting exotic variability, including complex "heartbeat" oscillations in its X-ray light curves, similar to those obser…
astro-ph.HE2025
A Multi-wavelength Characterization of the 2023 Outburst of MAXI J1807+132: Manifestations of Disk Instability and Jet Emission
Sandeep K. Rout, M. Cristina Baglio, Andrew Hughes +19
Several phenomenological aspects of low-luminosity neutron star transients, such as atolls, remain poorly understood. One such source, MAXI J1807+132, entered its latest outburst i…
astro-ph.HE2024
Lack of emission lines in the optical spectra of SAX J1808.4-3658 during reflaring of the 2019 outburst
L. Asquini, M. C. Baglio, S. Campana +5
We present spectroscopy of the accreting X-ray binary and millisecond pulsar SAX J1808.4-3658. These observations are the first to be obtained during a reflaring phase. We collecte…