Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Raychaudhuri, Biplab"'
Autor:
Mondal, Aditya S., Bhattacharya, Mahasweta, Pahari, Mayukh, Raychaudhuri, Biplab, Ghosh, Rohit, Dewangan, Gulab C.
We report on the NuSTAR observations of the accreting pulsars IGR~J17480-2446 and IGR~J17511-3057 performed on March 4, 2023, and April 8, 2015, respectively. We describe the continuum emission of IGR~J17480-2446 with a combination of two soft therma
Externí odkaz:
http://arxiv.org/abs/2409.20323
Autor:
Bhattacharya, Mahasweta, Mondal, Aditya S., Pahari, Mayukh, Raychaudhuri, Biplab, Ghosh, Rohit, Dewangan, Gulab C.
The accreting millisecond X-ray pulsar IGR J17498-2921 went into X-ray outburst on April 13-15, 2023, for the first time since its discovery on August 11, 2011. Here, we report on the first follow-up \nustar{} observation of the source, performed on
Externí odkaz:
http://arxiv.org/abs/2408.06193
In the literature, there is no consensus on the origin of the relativistic Sagnac effect, particularly from the standpoint of the rotating observer. The experiments of Wang et al. \cite{wang2003modified,wang2004generalized} has, however, questioned t
Externí odkaz:
http://arxiv.org/abs/2207.09138
Publikováno v:
Phys. Scr. 98 125024, 2023
The absolute nature of many fundamental predictions of the theory of special relativity, including the relativity of simultaneity, has been questioned in the literature owing to the choice of distant clock synchronization process in the theory. Here
Externí odkaz:
http://arxiv.org/abs/2111.12285
Relativistic length contraction is revisited and a simple but new thought experiment is proposed in which an apparent asymmetric situation is developed between two different inertial frames regarding detection of light that comes from a chamber to an
Externí odkaz:
http://arxiv.org/abs/2109.08719
We present a broadband spectral study of the radio-loud narrow-line Seyfert 1 galaxy 1H~0323+342 based on multi-epoch observations performed with NuSTAR on 2014 March 15, and two simultaneous observations performed with Suzaku and Swift on 2009 July
Externí odkaz:
http://arxiv.org/abs/1806.04089
We report on the \nustar{} observation of the Z-type neutron star low-mass X-ray binary Cygnus X--2 performed on 7 January 2015. During this observation, the source exhibited sudden decrease in count rate (dips) and stronger variability in $3-79\kev$
Externí odkaz:
http://arxiv.org/abs/1708.01032
Autor:
Bhattacharya, Mahasweta, Mondal, Aditya S, Pahari, Mayukh, Raychaudhuri, Biplab, Ghosh, Rohit, Dewangan, Gulab C
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Oct2024, Vol. 534 Issue 1, p634-644, 11p
Autor:
Mondal, Aditya S., Dewangan, Gulab C., Pahari, Mayukh, Misra, Ranjeev, Kembhavi, Ajit K., Raychaudhuri, Biplab
Broad relativistic iron lines from neutron star X-ray binaries are important probes of the inner accretion disk. The X-ray reflection features can be weakened due to strong magnetic fields or very low iron abundances such as is possible in X-ray bina
Externí odkaz:
http://arxiv.org/abs/1606.05307
We analyze two simultaneous \nustar{} and \swift{} data of the Atoll type neutron star (NS) X-ray binary 4U~1728--34 observed on 1 and 3 October, 2013. Based on power density spectra, hardness ratio and colour-colour diagram, we infer that the first
Externí odkaz:
http://arxiv.org/abs/1604.04366