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Article Dans Une Revue Astrophys.J.Lett. Année : 2023

MAXI J1848-015: The First Detection of Relativistically Moving Outflows from a Globular Cluster X-ray Binary

A Bahramian
  • Fonction : Auteur
E Tremou
  • Fonction : Auteur
A.J Tetarenko
  • Fonction : Auteur
J.C.A Miller-Jones
  • Fonction : Auteur
R.P Fender
  • Fonction : Auteur
D.R.A Williams
  • Fonction : Auteur
J Strader
  • Fonction : Auteur
F Carotenuto
  • Fonction : Auteur
R Salinas
  • Fonction : Auteur
J.A Kennea
  • Fonction : Auteur
S.E Motta
  • Fonction : Auteur
P.A Woudt
  • Fonction : Auteur
J.H Matthews
  • Fonction : Auteur
T.D Russell
  • Fonction : Auteur

Résumé

Over the past decade, observations of relativistic outflows from outbursting X-ray binaries in the Galactic field have grown significantly. In this work, we present the first detection of moving and decelerating radio-emitting outflows from an X-ray binary in a globular cluster. MAXI J1848-015 is a recently discovered transient X-ray binary in the direction of the globular cluster GLIMPSE-C01. Using observations from the VLA, and a monitoring campaign with the MeerKAT observatory for 500 days, we model the motion of the outflows. This represents some of the most intensive, long-term coverage of relativistically moving X-ray binary outflows to date. We use the proper motions of the outflows from MAXI J1848-015 to constrain the component of the intrinsic jet speed along the line of sight, $\beta_\textrm{int} \cos \theta_\textrm{ejection}$, to be $=0.19\pm0.02$. Assuming it is located in GLIMPSE-C01, at 3.4 kpc, we determine the intrinsic jet speed, $\beta_\textrm{int}=0.79\pm0.07$, and the inclination angle to the line of sight, $\theta_\textrm{ejection}=76^\circ\pm2^{\circ}$. This makes the outflows from MAXI J1848-015 somewhat slower than those seen from many other known X-ray binaries. We also constrain the maximum distance to MAXI J1848-015 to be $4.3$ kpc. Lastly, we discuss the implications of our findings for the nature of the compact object in this system, finding that a black hole primary is a viable (but as-of-yet unconfirmed) explanation for the observed properties of MAXI J1848-015. If future data and/or analysis provide more conclusive evidence that MAXI J1848-015 indeed hosts a black hole, it would be the first black hole X-ray binary in outburst identified in a Galactic globular cluster.
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hal-04096361 , version 1 (13-05-2023)

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A Bahramian, E Tremou, A.J Tetarenko, J.C.A Miller-Jones, R.P Fender, et al.. MAXI J1848-015: The First Detection of Relativistically Moving Outflows from a Globular Cluster X-ray Binary. Astrophys.J.Lett., 2023, 948 (1), pp.L7. ⟨10.3847/2041-8213/accde1⟩. ⟨hal-04096361⟩
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