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Viscous dark matter and 21 cm cosmology

Bhatt, Jitesh R.; Mishra, Arvind Kumar; Nayak, Alekha C. (American Physical Society, 2019-09)

The EDGES experiment has detected the global absorption signal of the 21 cm line at z ∼ 17 in cosmic dawn era and reported its amplitude larger than the standard cosmological prediction. One possible explanation requires ...
Splitting of singly and doubly quantized composite vortices in two component Bose-Einstein condensates

Kuopanportti, Pekko; Bandyopadhyay, Soumik; Roy, Arko; Angom, D. (American Physical Society, 2019-09)

We study numerically the dynamical instabilities and splitting of singly and doubly quantized composite vortices in two-component Bose-Einstein condensates harmonically confined to quasi two dimensions. In this system, ...
Search for the isotropic stochastic background using data from Advanced LIGO�s second observing run

Sengupta, Anand S. (American Physical Society, 2019-09)

The stochastic gravitational-wave background is a superposition of sources that are either too weak or too numerous to detect individually. In this study, we present the results from a cross-correlation analysis on data ...
Search for intermediate mass black hole binaries in the first and second observing runs of the advanced LIGO and virgo network

Sengupta, Anand S. (American Physical Society, 2019-09)

Gravitational-wave astronomy has been firmly established with the detection of gravitational waves from the merger of ten stellar-mass binary black holes and a neutron star binary. This paper reports on the all-sky search ...
Search for eccentric binary black hole mergers with advanced LIGO and advanced Virgo during their first and second observing runs

Sengupta, Anand S. (American Astronomical Society, 2019-09)

When formed through dynamical interactions, stellar-mass binary black holes (BBHs) may retain eccentric orbits (e > 0.1 at 10 Hz) detectable by ground-based gravitational-wave detectors. Eccentricity can therefore be used ...
Probing the inert doublet model using jet substructure with a multivariate analysis

Bhardwaj, Akanksha; Konar, Partha; Mandal, Tanumoy; Sadhukhan, Soumya (American Physical Society, 2019-09)

We explore the challenging but phenomenologically interesting hierarchical mass spectrum of the inert doublet model where relatively light dark matter along with much heavier scalar states can fully satisfy the constraints ...
Investigation of emission characteristics of NMVOCs over urban site of western India

Yadav, Ravi; Sahu, L. K.| Tripathi, Nidhi|Pal, D.; Beig, G.; Jaaffrey, S.N.A. (Elsevier, 2019-09)

This is the first study to characterize the variation and emission of C2-C5 non-methane volatile organic compounds (NMVOCs) in a semi-urban site of western India based on measurements during February�December 2015. ...
Hue and chromaticity based exploration of surface complexation induced tunable emission from a non‐luminescent quantum dots

Bhandari, Satyapriya; Roy, Shilaj; Pramanik, Sabyasachi; Mandal, Prasenjit; Manna, Mihir (Wiley, 2019-09)

Herein we report the first time use of a hue parameter of HSV (Hue, Saturation and Value) color space - in combination with chromaticity color coordinates - for exploring the complexation induced luminescence color changes, ...
GWTC-1: A gravitational-wave transient catalog of compact binary mergers observed by LIGO and Virgo during the first and second observing runs

Sengupta, Anand (American Physical Society, 2019-09)

We present the results from three gravitational-wave searches for coalescing compact binaries with component masses above 1M? during the first and second observing runs of the Advanced gravitational-wave detector network. ...
Energy loss of heavy quarks in the isotropic collisional hot QCD medium

Jamal, M. Yousuf; Chandra, Vinod (Springer Nature, 2019-09)

The collisional energy loss of heavy partons (charm and bottom quarks) has been determined within the framework of semi-classical transport theory implying the Bhatnagar�Gross�Krook (BGK) collisional kernel. Hot QCD medium ...
Directional limits on persistent gravitational waves using data from Advanced LIGO�s first two observing runs

Sengupta, Anand (American Physical Society, 2019-09)

We perform an unmodeled search for persistent, directional gravitational wave (GW) sources using data from the first and second observing runs of Advanced LIGO. We do not find evidence for any GW signals. We place limits ...
Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced virgo

Sengupta, Anand (American Astronomical Society, 2019-09)

We present results on the mass, spin, and redshift distributions with phenomenological population models using the 10 binary black hole (BBH) mergers detected in the first and second observing runs completed by Advanced ...

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