MOTTA, Sara ElisaSara ElisaMOTTAKajava, J. J. E.J. J. E.KajavaGiustini, M.M.GiustiniWilliams, D. R. A.D. R. A.WilliamsDEL SANTO, MELANIAMELANIADEL SANTOFender, R.R.FenderGreen, D. A.D. A.GreenHeywood, I.I.HeywoodRhodes, L.L.RhodesSEGRETO, ALBERTOALBERTOSEGRETOSivakoff, G.G.SivakoffWoudt, P. A.P. A.Woudt2025-02-262025-02-2620210035-8711http://hdl.handle.net/20.500.12386/36268The Galactic black hole transient GRS 1915+105 is famous for its markedly variable X-ray and radio behaviour, and for being the archetypal galactic source of relativistic jets. It entered an X-ray outburst in 1992 and has been active ever since. Since 2018 GRS 1915+105 has declined into an extended low-flux X-ray plateau, occasionally interrupted by multiwavelength flares. Here, we report the radio and X-ray properties of GRS 1915+105 collected in this new phase, and compare the recent data to historic observations. We find that while the X-ray emission remained unprecedentedly low for most of the time following the decline in 2018, the radio emission shows a clear mode change half way through the extended X-ray plateau in 2019 June: from low flux (∼3 mJy) and limited variability, to marked flaring with fluxes two orders of magnitude larger. GRS 1915+105 appears to have entered a low-luminosity canonical hard state, and then transitioned to an unusual accretion phase, characterized by heavy X-ray absorption/obscuration. Hence, we argue that a local absorber hides from the observer the accretion processes feeding the variable jet responsible for the radio flaring. The radio-X-ray correlation suggests that the current low X-ray flux state may be a signature of a super-Eddington state akin to the X-ray binaries SS433 or V404 Cyg.STAMPAenArticle10.1093/mnras/stab5112-s2.0-85103482512http://arxiv.org/abs/2101.01187v2https://academic.oup.com/mnras/article/503/1/152/61491652021MNRAS.503..152MFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_11 Relativistic astrophysics