The obscured X-ray binaries V404 Cyg, Cyg X–3, V4641 Sgr, and GRS 1915+ 105

KII Koljonen, JA Tomsick - Astronomy & Astrophysics, 2020 - aanda.org
… wind obscuring the X-ray source. We study here whether the peculiar X-ray spectra observed
from … We used spectra obtained with the Nuclear Spectroscopic Telescope Array and Rossi …

X-ray Energy Spectra Study and Black Hole Spin Estimate of GRS 1915+ 105

W Yuan, GOU Li-jun, Z Xue-shan, F Ye, JIA Nan… - Chinese Astronomy and …, 2023 - Elsevier
… a brand new outburst cycle, with an X-ray flux of up to 10 38 … X-ray energy spectral
characteristics and preliminary spin measurement results of GRS 1915 through the analysis and …

[HTML][HTML] Exploring the accretion-ejection geometry of GRS 1915+ 105 in the obscured state with future X-ray spectro-polarimetry

A Ratheesh, G Matt, F Tombesi, P Soffitta… - Astronomy & …, 2021 - aanda.org
… by spectroscopy alone. We perform a flux resolved spectral analysis of the OS of GRS
1915+105 … We also derive the expected polarimetric properties in X-rays for various spectral and …

[HTML][HTML] Prediction of gamma-ray emission from Cygnus X-1, SS 433, and GRS 1915+ 105 after absorption

TV Papavasileiou, OT Kosmas, I Sinatkas - Astronomy & Astrophysics, 2023 - aanda.org
… The method described in this paper was applied to the Black hole X-ray binary systems:
Cygnus X-1, SS 433, and GRS 1915+105. These systems were chosen on the basis of the …

Observations of a radio-bright, X-ray obscured GRS 1915+ 105

SE Motta, JJE Kajava, M Giustini… - Monthly Notices of …, 2021 - academic.oup.com
GRS 1915+105 has declined into an extended low-flux X-ray … the radio and X-ray
properties of GRS 1915+105 collected in … We find that while the X-ray emission remained …

[HTML][HTML] A variable magnetic disc wind in the black hole X-ray binary GRS 1915+ 105?

A Ratheesh, F Tombesi, K Fukumura, P Soffitta… - Astronomy & …, 2021 - aanda.org
… This study will provide a basis for planning future observations with the … the spectra of GRS
1915+105 in the soft ϕ and hard χ classes using the high-resolution spectroscopy offered by …

[HTML][HTML] ALMA/NICER observations of GRS 1915+ 105 indicate a return to a hard state

KII Koljonen, T Hovatta - Astronomy & Astrophysics, 2021 - aanda.org
… The first two phases commonly occur during a decaying XRB outburst, and we show that
the X-ray spectral and timing properties of GRS 1915+105 are indeed typical for a decaying …

Using the bispectrum to probe radio X-ray correlations in GRS 1915+ 105

K Arur, TJ Maccarone - Monthly Notices of the Royal …, 2022 - academic.oup.com
… In this paper, we analyse a sample of ∼600 observations of GRS 1915+105 to perform a …
of the X-ray light curve such as count rate, hardness ratio, and QPO frequency affect the …

A spectral study of GRS 1915+105 during its March 2017 NuSTAR observations

J Chauhan, P Bharali, A Lohfink… - Monthly Notices of …, 2024 - academic.oup.com
… in the X-ray light curve. We perform time-resolved spectral analysis to comprehend the …
We also found a strong positive correlation between the QPO frequency and the power-law …

The novel obscured state of the stellar-mass black hole GRS 1915+ 105

M Balakrishnan, JM Miller, MT Reynolds… - The Astrophysical …, 2021 - iopscience.iop.org
… counts to allow for meaningful spectroscopy, the time-averaged spectrum was analyzed. We
also observed two full X-ray flares, and two segments of X-ray flares. OBSIDs 00012178006 …