We report a new class of Type I quasars with broadened Hβ cores. These quasars (AHQs) include over 1/4 of all ∼16000 SDSS quasars for which Hβ is well-measured (z<0.8). However, previous line-fitting catalogs of SDSS quasars have not reported findin…

The H\beta\ emission line in a typical Type I quasar is composed of a broad base and a narrow core, with the core velocity typical of narrow-line reg…

The origin of super-luminous supernovae (SLSNe), especially the source of their huge luminosities, has not been clarified yet. While a strong interac…

We calculate the evolution of zero-metallicity Population III (Pop III) stars whose mass grows from the initial mass of $\sim 1M_{\odot}$ by accretin…

We present a Bayesian hierarchical inference formalism to study the relation between the properties of dark matter halos and those of their central g…

We investigate the relationship between colour and structure within galaxies using a large, volume-limited sample of bright, low-redshift galaxies wi…

We calculate multicolor light curves (LCs) of supernovae (SNe) from red supergiants (RSGs) exploded within dense circumstellar medium (CSM). Multicol…

Theoretical modeling of the redshift-space power spectrum of galaxies is crucially important to correctly extract cosmological information from redsh…

We revisit the constraints on the small scale density perturbations ($10^4\,\mathrm{Mpc}^{-1}\lesssim k \lesssim10^5\,\mathrm{Mpc}^{-1}$) from the mo…

We extend earlier work on the problem of estimating the void-volume function -- the abundance and evolution of large voids which grow gravitationally…

Future Cosmic Microwave Background (CMB) satellite missions aim to use the B-mode polarisation signal to measure the tensor-to-scalar ratio $r$ with …

Microlensing of stars, e.g. in the Galactic bulge and Andromeda galaxy (M31), is among the most robust, powerful method to constrain primordial black…

We study the mass distribution of a sample of 28 galaxy clusters using strong and weak lensing observations. The clusters are selected via their stro…

We present results from a study to determine whether relations, established in the local Universe, between the mass of supermassive black holes (SMBH…

We report the discovery of 29 promising (and 59 total) new lens candidates from the CFHT Legacy Survey (CFHTLS) based on about 11 million classificat…

We construct new t-structures on the derived category of coherent sheaves on smooth projective threefolds. We conjecture that they give Bridgeland st…

In the pioneer work [DHKK], Dimitrov-Haiden-Katzarkov-Kontsevich introduced various categorical analogies of classical theory from dynamical systems. In particular, they defined the entropy of an endofunctor on a triangulated category with a split g…

In the pioneer work by Dimitrov-Haiden-Katzarkov-Kontsevich, they introduced various categorical analogies from classical theory of dynamical systems…

We investigate the Euclidean vacuum mode functions of a massive vector field in a spatially open chart of de Sitter spacetime. In the one-bubble open…

Generically, the effective coupling between the dark matter and an atom scales with the number of constituents in the atom, resulting in the effectiv…

The Excursion Set approach has been used to make predictions for a number of interesting quantities in studies of nonlinear hierarchical clustering. …

The top quark forward-backward asymmetry measured at the Tevatron collider shows a large deviation from standard model expectations. Among possible i…

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