Zobrazeno 1 - 10
of 479
pro vyhledávání: '"Ghosh Tuhin"'
We test the $n$=3 Ultralight Axion-like model of Early Dark Energy (EDE) with the observations of the $EB$ mode of the cosmic microwave background (CMB) radiation, and local expansion rate measurements. We find that the shape of the CMB $EB$ angular
Externí odkaz:
http://arxiv.org/abs/2408.09521
Autor:
Maharana, Siddharth, Ramaprakash, A. N., Rajarshi, Chaitanya, Khodade, Pravin, Joshi, Bhushan, Chordia, Pravin, Kohok, Abhay, Anche, Ramya M., Modi, Deepa, Kypriotakis, John A., Deokar, Amit, Kinjawadekar, Aditya, Potter, Stephen B., Blinov, Dmitry, Eriksen, Hans Kristian, Falalaki, Myrto, Gajjar, Hitesh, Ghosh, Tuhin, Gjerløw, Eirik, Kiehlmann, Sebastain, Liodakis, Ioannis, Mandarakas, Nikolaos, Panopoulou, Georgia V., Pavlidou, Vasiliki, Pearson, Timothy J., Pelgrims, Vincent, Readhead, Anthony C. S., Skalidis, Raphael, Tassis, Konstantinos, Uppal, Namita, Wehus, Ingunn K.
Publikováno v:
Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130967P (2024)
Wide-Area Linear Optical Polarimeter (WALOP)-South is the first wide-field and survey-capacity polarimeter in the optical wavelengths. On schedule for commissioning in 2024, it will be mounted on the 1 m SAAO telescope in Sutherland Observatory, Sout
Externí odkaz:
http://arxiv.org/abs/2406.19428
Publikováno v:
ITM Web of Conferences, Vol 49, p 02001 (2022)
In this work, we introduce Bloch waves to study the homogenization process in a class of simple laminates which are obtained as a particular Hashin-Shtrikman microstructure involving translations and dilations in only one direction. This makes this c
Externí odkaz:
https://doaj.org/article/2acc874f0b114ed49be850111fbedfaa
Observed high multiplicity planetary systems are often tightly packed. Numerical studies indicate that such systems are susceptible to dynamical instabilities. Dynamical instabilities in close-in tightly packed systems, similar to those found in abun
Externí odkaz:
http://arxiv.org/abs/2312.07648
Autor:
Adak, Debabrata, Shaikh, Shabbir, Sinha, Srijita, Ghosh, Tuhin, Boulanger, Francois, Lagache, Guilaine, Souradeep, Tarun, Miville-Deschênes, Marc-Antoine
Publikováno v:
Mon. Not. R. Astron. Soc. 531, 4876 (2024)
We present a Bayesian inference method to characterise the dust emission properties using the well-known dust-HI correlation in the diffuse interstellar medium at Planck frequencies $\nu \ge 217$ GHz. We use the Galactic HI map from the Galactic All-
Externí odkaz:
http://arxiv.org/abs/2310.01062
Exciting clues to isotropic cosmic birefringence have recently been detected in the $EB$ cross-power spectra of the polarization data of the cosmic microwave background (CMB). Early Dark Energy (EDE) models with a pseudoscalar field coupled to photon
Externí odkaz:
http://arxiv.org/abs/2305.07937
We relate the (anisotropic) variable coefficient local and nonlocal Calder\'on problems by means of the Caffarelli-Silvestre extension. In particular, we prove that (partial) Dirichlet-to-Neumann data for the fractional Calder\'on problem in three an
Externí odkaz:
http://arxiv.org/abs/2305.04227
Autor:
Ghosh, Tuhin, Chatterjee, Sourav
The high-multiplicity exoplanet systems are generally more tightly packed when compared to the solar system. Such compact multi-planet systems are often susceptible to dynamical instability. We investigate the impact of dynamical instability on the f
Externí odkaz:
http://arxiv.org/abs/2304.12352
Publikováno v:
JCAP 01 (2024) 036
Understanding the statistical properties of synchrotron emission from our Galaxy is valuable from the perspective of observations targeting signals of cosmological origin, as well as for understanding physical processes in our Galaxy. In this work, w
Externí odkaz:
http://arxiv.org/abs/2212.06076