Zobrazeno 1 - 10
of 2 122
pro vyhledávání: '"Purba, P."'
Conventional calibration of Baryon Acoustic Oscillations (BAO) data relies on estimation of the sound horizon at drag epoch $r_d$ from early universe observations by assuming a cosmological model. We present a recalibration of two independent BAO dat
Externí odkaz:
http://arxiv.org/abs/2412.14750
Autor:
Mukherjee, Purba, Sen, Anjan A.
Here we explore certain subtle features imprinted in data from the completed Sloan Digital Sky Survey IV (SDSS-IV) extended Baryon Oscillation Spectroscopic Survey (eBOSS) as a combined probe for the background and perturbed Universe. We reconstruct
Externí odkaz:
http://arxiv.org/abs/2412.13973
Autor:
Mukherjee, Purba, Dainotti, Maria Giovanna, Dialektopoulos, Konstantinos F., Said, Jackson Levi, Mifsud, Jurgen
The $\Lambda$ Cold Dark Matter ($\Lambda$CDM) cosmological model has been highly successful in predicting cosmic structure and evolution, yet recent precision measurements have highlighted discrepancies, especially in the Hubble constant inferred fro
Externí odkaz:
http://arxiv.org/abs/2411.03773
The current accelerated expansion of the Universe remains ones of the most intriguing topics in modern cosmology, driving the search for innovative statistical techniques. Recent advancements in machine learning have significantly enhanced its applic
Externí odkaz:
http://arxiv.org/abs/2410.02061
Autor:
Das, Purba, Kim, Donghan
We study the concept of (generalized) $p$-th variation of a real-valued continuous function along a general class of refining sequence of partitions. We show that the finiteness of the $p$-th variation of a given function is closely related to the fi
Externí odkaz:
http://arxiv.org/abs/2409.00652
Social media platforms continue to change our digital relationships nowadays. Therefore, recognizing the complex consequences of infinite scrolling is essential. This paper explores two distinct angles of social media engagement: mindless scrolling a
Externí odkaz:
http://arxiv.org/abs/2408.09601
Reionization is one of the least understood processes in the evolution history of the Universe, mostly because of the numerous astrophysical processes occurring simultaneously about which we do not have a very clear idea so far. In this article, we u
Externí odkaz:
http://arxiv.org/abs/2407.19481
Autor:
Mukherjee, Purba, Sen, Anjan Ananda
In this work, we implement Gaussian process regression to reconstruct the expansion history of the universe in a model-agnostic manner, using the Pantheon-Plus SN-Ia compilation in combination with two different BAO measurements (SDSS-IV and DESI DR1
Externí odkaz:
http://arxiv.org/abs/2405.19178
We do a careful investigation of the prospects of dark energy (DE) interacting with cold dark matter (CDM) in alleviating the $S_8$ clustering tension. To this end, we consider various well-known parametrizations of the DE equation of state (EoS), an
Externí odkaz:
http://arxiv.org/abs/2404.06396
Autor:
Bhattacharya, Purba, Roy, Promita, Dey, Tanay, Datta, Jaydeep, Rout, Prasant K., Majumdar, Nayana, Mukhopadhyay, Supratik
Aging and stability of gaseous ionization detectors are intricately related to charging up, accumulation of space charge and formation of discharges. All these phenomena, in their turn, depend on the dynamics of charged particles within the device. B
Externí odkaz:
http://arxiv.org/abs/2403.02722