Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Chakravorty, Susmita"'
Autor:
Datta, Sudeb Ranjan, Chakravorty, Susmita, Ferreira, Jonathan, Petrucci, Pierre-Olivier, Kallman, Timothy R, Jacquemin-Ide, Jonatan, Zimniak, Nathan, Wilms, Joern, Bianchi, Stefano, Parra, Maxime, Clavel, Maïca
Publikováno v:
A&A 687, A2 (2024)
Observation of blue-shifted X-ray absorption lines indicates the presence of wind from the accretion disk in X-ray binaries. Magnetohydrodynamic (MHD) driving is one of the possible wind launching mechanisms. Recent theoretical development makes magn
Externí odkaz:
http://arxiv.org/abs/2403.13077
Autor:
Chakravorty, Susmita, Petrucci, Pierre-Olivier, Datta, Sudeb Ranjan, Ferreira, Jonathan, Wilms, Joern, Jacquemin-Ide, Jonatan, Clavel, Maica, Marcel, Gregoire, Rodriguez, Jerome, Malzac, Julien, Belmont, Renaud, Corbel, Stephane, Coriat, Mickael, Henri, Gilles, Parra, Maxime
In our self-similar, analytical, magneto-hydrodynamic (MHD) accretion-ejection solution, the density at the base of the outflow is explicitly dependent on the disk accretion rate - a unique property of this class of solutions. We had earlier found th
Externí odkaz:
http://arxiv.org/abs/2209.15127
Autor:
Saha, Preetha, Bharadwaj, Somnath, Chakravorty, Susmita, Roy, Nirupam, Choudhuri, Samir, Günther, Hans Moritz, Smith, Randall K.
The shell type supernova remnant (SNR) Cas A exhibits structures at nearly all angular scales. Previous studies show the angular power spectrum $(C_{\ell})$ of the radio emission to be a broken power law, consistent with MHD turbulence. The break has
Externí odkaz:
http://arxiv.org/abs/2102.06093
Autor:
Bhat, Harshitha K., Chakravorty, Susmita, Sengupta, Dhrubojyoti, Elvis, Martin, Datta, Sudeb Ranjan, Roy, Nirupam, Bertemes, Caroline, Ferland, Gary, Ezhikode, Savithri H.
Publikováno v:
2020, MNRAS, 497, 2992
The EUV provides most of the ionization that creates the high equivalent width (EW) broad and narrow emission lines (BELs, NELs) of quasars. Spectra of Hypermassive Schwarzschild black holes (HMBHs, $M_{BH} \geq 10^{10} M_{\odot}$) with $\alpha$-disc
Externí odkaz:
http://arxiv.org/abs/2007.01438
Autor:
Danehkar, Ashkbiz, Nowak, Michael A., Lee, Julia C., Kriss, Gerard A., Young, Andrew J., Hardcastle, Martin J., Chakravorty, Susmita, Fang, Taotao, Neilsen, Joseph, Rahoui, Farid, Smith, Randall K.
Publikováno v:
Astrophys.J.853:165,2018
We present a detailed X-ray spectral study of the quasar PG 1211+143 based on Chandra High Energy Transmission Grating Spectrometer (HETGS) observations collected in a multi-wavelength campaign with UV data using the Hubble Space Telescope Cosmic Ori
Externí odkaz:
http://arxiv.org/abs/1712.07118
Autor:
Wang-Ji, Jingyi, García, Javier A., Steiner, James F., Tomsick, John A., Harrison, Fiona A., Bambi, Cosimo, Petrucci, Pierre-Olivier, Ferreira, Jonathan, Chakravorty, Susmita, Clavel, Maïca
We analyze eleven NuSTAR and Swift observations of the black hole X-ray binary GX 339-4 in the hard state, six of which were taken during the end of the 2015 outburst, five during a failed outburst in 2013. These observations cover luminosities from
Externí odkaz:
http://arxiv.org/abs/1712.02571
Autor:
Laha, Sibasish, Guainazzi, Matteo, Chakravorty, Susmita, Dewangan, Gulab C., Kembhavi, Ajit K.
This paper is a sequel to the extensive study of warm absorber (WA) in X-rays carried out using high resolution grating spectral data from XMM-Newton satellite (WAX-I). Here we discuss the global dynamical properties as well as the energetics of the
Externí odkaz:
http://arxiv.org/abs/1601.06369
Autor:
Datta, Sudeb Ranjan, Chakravorty, Susmita, Ferreira, Jonathan, Petrucci, Pierre-Olivier, Kallman, Timothy R., Jacquemin-Ide, Jonatan, Zimniak, Nathan, Wilms, Joern, Bianchi, Stefano, Parra, Maxime, Clavel, Maïca
Publikováno v:
Astronomy & Astrophysics / Astronomie et Astrophysique; 7/15/2024, Vol. 687, p1-16, 16p
Autor:
Laha, Sibasish, Guainazzi, Matteo, Dewangan, Gulab C., Chakravorty, Susmita, Kembhavi, Ajit K.
We present results from a homogeneous analysis of the broadband 0.3-10 keV CCD resolution as well as of soft X-ray high-resolution grating spectra of a hard X-ray flux-limited sample of 26 Seyfert galaxies observed with XMM-Newton. Our goal is to cha
Externí odkaz:
http://arxiv.org/abs/1404.0899
The UV to X-ray continuum of active galactic nuclei (AGN) is important for maintaining the ionisation and thermal balance of the warm absorbers (WAs). However, the spectra in the sensitive energy range $\sim \,13.6 -300 \ev$ are unobservable due to G
Externí odkaz:
http://arxiv.org/abs/1308.5804