Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole?

D. Cseh; P. Kaaret; S. Corbel; F. Grisé; C. Lang; E. Körding; H. Falcke; P. G. Jonker; J. C.A. Miller-Jones; S. Farrell; Y. J. Yang; Z. Paragi; S. Frey

doi:10.1093/mnrasl/slt166

Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole?

D. Cseh
, P. Kaaret
, S. Corbel
, F. Grisé
, C. Lang
, E. Körding
, H. Falcke
, P. G. Jonker
, J. C.A. Miller-Jones
, S. Farrell
, Y. J. Yang
, Z. Paragi
, S. Frey

Astronomy & Astrophysics

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

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 × 10³⁹ erg s^-1 that is associated with a time-averaged isotropic X-ray luminosity of at least 4 × 10³⁹ erg s^-1. Our results suggest that Holmberg II X-1 is powered by a black hole of M_BH ≥ 25 M⊙, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.

Original language	English (US)
Article number	slt166
Pages (from-to)	L1-L5
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	439
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slt166
State	Published - Mar 2014

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1093/mnrasl/slt166

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Cseh, D., Kaaret, P., Corbel, S., Grisé, F., Lang, C., Körding, E., Falcke, H., Jonker, P. G., Miller-Jones, J. C. A., Farrell, S., Yang, Y. J., Paragi, Z., & Frey, S. (2014). Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole? Monthly Notices of the Royal Astronomical Society: Letters, 439(1), L1-L5. Article slt166. https://doi.org/10.1093/mnrasl/slt166

@article{e0d41101ac1a4ecfabf7db384c6bc70c,

title = "Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole?",

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 \textasciitilde{}2 × 1039 erg s-1 that is associated with a time-averaged isotropic X-ray luminosity of at least 4 × 1039 erg s-1. Our results suggest that Holmberg II X-1 is powered by a black hole of MBH ≥ 25 M⊙, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.",

author = "D. Cseh and P. Kaaret and S. Corbel and F. Gris{\'e} and C. Lang and E. K{\"o}rding and H. Falcke and Jonker, \{P. G.\} and Miller-Jones, \{J. C.A.\} and S. Farrell and Yang, \{Y. J.\} and Z. Paragi and S. Frey",

year = "2014",

month = mar,

doi = "10.1093/mnrasl/slt166",

language = "English (US)",

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journal = "Monthly Notices of the Royal Astronomical Society: Letters",

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publisher = "Oxford University Press",

number = "1",

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Cseh, D, Kaaret, P, Corbel, S, Grisé, F, Lang, C, Körding, E, Falcke, H, Jonker, PG, Miller-Jones, JCA, Farrell, S, Yang, YJ, Paragi, Z & Frey, S 2014, 'Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole?', Monthly Notices of the Royal Astronomical Society: Letters, vol. 439, no. 1, slt166, pp. L1-L5. https://doi.org/10.1093/mnrasl/slt166

TY - JOUR

T1 - Unveiling recurrent jets of the ULX holmberg II X-1

T2 - Evidence for a massive stellar-mass black hole?

AU - Cseh, D.

AU - Kaaret, P.

AU - Corbel, S.

AU - Grisé, F.

AU - Lang, C.

AU - Körding, E.

AU - Falcke, H.

AU - Jonker, P. G.

AU - Miller-Jones, J. C.A.

AU - Farrell, S.

AU - Yang, Y. J.

AU - Paragi, Z.

AU - Frey, S.

PY - 2014/3

Y1 - 2014/3

N2 - 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 × 1039 erg s-1 that is associated with a time-averaged isotropic X-ray luminosity of at least 4 × 1039 erg s-1. Our results suggest that Holmberg II X-1 is powered by a black hole of MBH ≥ 25 M⊙, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.

AB - 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 × 1039 erg s-1 that is associated with a time-averaged isotropic X-ray luminosity of at least 4 × 1039 erg s-1. Our results suggest that Holmberg II X-1 is powered by a black hole of MBH ≥ 25 M⊙, that is inferred to be accreting at a high Eddington rate with intermittent radio activity.

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JO - Monthly Notices of the Royal Astronomical Society: Letters

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IS - 1

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ER -

Unveiling recurrent jets of the ULX holmberg II X-1: Evidence for a massive stellar-mass black hole?

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