English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We have studied the spectro-temporal properties of the neutron star low massX-ray binary GX 9$+$1 using data from \textit{NuSTAR/FPM} and\textit{AstroSat/SXT} and \textit{LAXPC}. The hardness-intensity diagram of thesource showed it to be in the soft spectral state during both observations.\textit{NuSTAR} spectral analysis yielded an inclination angle ($\theta$) $=$29$\substack{+3\\-4}^{\circ}$ and inner disk radius ($R_{in}$) $\leq$ 19.01 km.Assuming that the accretion disk was truncated at the Alfv\'en radius duringthe observation, the upper limit of the magnetic dipole moment ($\mu$) and themagnetic field strength ($B$) at the poles of the neutron star in GX 9$+$1 werecalculated to be 1.45$\times$$10^{26}$ G cm$^3$ and 2.08$\times$$10^8$ G,respectively (for $k_A$ $=$ 1). Flux resolved spectral analysis with\textit{AstroSat} data showed the source to be in the soft spectral state($F_{disk}$/$F_{total}$ $\sim$0.9) with a monotonic increase in mass accretionrate ($\dot{m}$) along the banana branch. The analysis also showed the presenceof absorption edges at $\sim$1.9 and $\sim$2.4 keV, likely due to Si XIII and SXV, respectively. Temporal analysis with \textit{LAXPC-20} data in the 0.02 $-$100 Hz range revealed the presence of noise components, which could becharacterized with broad Lorentzian components.

NuSTAR and AstroSat observations of GX 9$+$1: Spectral and temporal studies