Feasibility calculations show SKA-Mid can detect polarized emission from a Holmberg II X-1-like ULX jet within 10 hours up to ~10 Mpc, while the bubble requires ~100 hours.
Unveiling recurrent jets of the ULX Holmberg II X-1: evidence for a massive stellar-mass black hole?
2 Pith papers cite this work. Polarity classification is still indexing.
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Pith papers citing it
abstract
We report on the discovery of an apparent triple radio structure hidden inside the radio bubble of the ultraluminous X-ray source Holmberg II X-1. The morphology is consistent with a collimated jet structure, which is observed to emit optically thin synchrotron radiation. The central component has a steep radio spectrum and is brighter than the outer components indicating a renewed radio activity. We estimate a minimum time-averaged jet power of 2 x 10^{39} erg/s that is associated with a time-averaged isotropic X-ray luminosity of at least 4 x 10^{39} erg/s. Our results suggest that Holmberg II X-1 is powered by a black hole of M_BH \geq 25 M_sun, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.
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astro-ph.HE 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Gemini spectroscopy suggests an A-type supergiant donor in NGC 1313 X-2 and provides updated constraints on orbital parameters, disk size, and gas bubble expansion.
citing papers explorer
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Polarimetry of Ultraluminous X-ray sources
Feasibility calculations show SKA-Mid can detect polarized emission from a Holmberg II X-1-like ULX jet within 10 hours up to ~10 Mpc, while the bubble requires ~100 hours.
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Deep optical spectroscopic monitoring of the pulsating ULX NGC 1313 X-2 with longslit Gemini observations
Gemini spectroscopy suggests an A-type supergiant donor in NGC 1313 X-2 and provides updated constraints on orbital parameters, disk size, and gas bubble expansion.