Ananth Tenneti
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View article: A Quantum Inspired Bi-level Optimization Algorithm for the First Responder Network Design Problem
A Quantum Inspired Bi-level Optimization Algorithm for the First Responder Network Design Problem Open
In the aftermath of a sudden catastrophe, First Responders (FR) strive to promptly reach and rescue immobile victims. Simultaneously, other mobile individuals take roads to evacuate the affected region, or access shelters. The escalated tr…
View article: Quantum annealing research at CMU: algorithms, hardware, applications
Quantum annealing research at CMU: algorithms, hardware, applications Open
In this mini-review, we introduce and summarize research from the Quantum Technologies Group (QTG) at Carnegie Mellon University related to computational experience with quantum annealing, performed in collaboration with several other inst…
View article: Three-point intrinsic alignments of dark matter haloes in the IllustrisTNG simulation
Three-point intrinsic alignments of dark matter haloes in the IllustrisTNG simulation Open
We use the IllustrisTNG suite of cosmological simulations to measure intrinsic alignment (IA) bispectra of dark matter subhaloes between redshifts 0 and 1. We decompose the intrinsic shear field into E- and B- modes and find that the bispe…
View article: Group-scale intrinsic galaxy alignments in the Illustris-TNG and MassiveBlack-II simulations
Group-scale intrinsic galaxy alignments in the Illustris-TNG and MassiveBlack-II simulations Open
We study the alignments of satellite galaxies, and their anisotropic distribution, with respect to location and orientation of their host central galaxy in MassiveBlack-II (MB-II) and IllustrisTNG simulations. We find that: the shape of th…
View article: On the possibility of baryon acoustic oscillation measurements at redshift <i>z</i> &gt; 7.6 with the Roman space telescope
On the possibility of baryon acoustic oscillation measurements at redshift <i>z</i> > 7.6 with the Roman space telescope Open
The Nancy Grace Roman Space Telescope (RST), with its field of view and high sensitivity will make surveys of cosmological large-scale structure possible at high redshifts. We investigate the possibility of detecting baryon acoustic oscill…
View article: Cosmic variance of <i>z</i> &gt; 7 galaxies: prediction from <scp>bluetides</scp>
Cosmic variance of <i>z</i> > 7 galaxies: prediction from <span>bluetides</span> Open
In the coming decade, a new generation of telescopes, including JWST and WFIRST, will probe the period of the formation of first galaxies and quasars, and open up the last frontier for structure formation. Recent simulations and observatio…
View article: Weak lensing reveals a tight connection between dark matter halo mass and the distribution of stellar mass in massive galaxies
Weak lensing reveals a tight connection between dark matter halo mass and the distribution of stellar mass in massive galaxies Open
Using deep images from the Hyper Suprime-Cam (HSC) survey and taking advantage of its unprecedented weak lensing capabilities, we reveal a remarkably tight connection between the stellar mass distribution of massive central galaxies and th…
View article: The evolution of galaxy intrinsic alignments in the <tt>MassiveBlackII</tt> universe
The evolution of galaxy intrinsic alignments in the MassiveBlackII universe Open
We investigate the redshift evolution of the intrinsic alignments (IAs) of galaxies in the MassiveBlackII (MBII) simulation. We select galaxy samples above fixed subhalo mass cuts ($M_h\gt 10^{11,12,13}\,\mathrm{M}_{\odot }\, h^{-1}$) at z…
View article: A tiny host galaxy for the first giant black hole:<i>z</i> = 7.5 quasar in BlueTides
A tiny host galaxy for the first giant black hole:<i>z</i> = 7.5 quasar in BlueTides Open
The most distant known quasar recently discovered by Ba\\~nados et al. (2018)\nis at $z=7.5$ (690 Myr after the Big Bang), at the dawn of galaxy formation. We\nexplore the host galaxy of the brightest quasar in the large volume\ncosmologic…
View article: Gas outflows from the z = 7.54 quasar: predictions from the BlueTides simulation
Gas outflows from the z = 7.54 quasar: predictions from the BlueTides simulation Open
Many theoretical models predict that quasar driven outflows account for the observed quenching of star formation in massive galaxies. There is growing observational evidence for quasar-launched massive outflows at z>6, while the details of…
View article: Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey II: Report of a Community Workshop on the Scientific Synergies Between the SPHEREx Survey and Other Astronomy Observatories
Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey II: Report of a Community Workshop on the Scientific Synergies Between the SPHEREx Survey and Other Astronomy Observatories Open
SPHEREx is a proposed NASA MIDEX mission selected for Phase A study. SPHEREx would carry out the first all-sky spectral survey in the near infrared. At the end of its two-year mission, SPHEREx would obtain 0.75-to-5μm spectra of every 6.2 …
View article: Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey II: Report of a Community Workshop on the Scientific Synergies Between the SPHEREx Survey and Other Astronomy Observatories
Science Impacts of the SPHEREx All-Sky Optical to Near-Infrared Spectral Survey II: Report of a Community Workshop on the Scientific Synergies Between the SPHEREx Survey and Other Astronomy Observatories Open
SPHEREx is a proposed NASA MIDEX mission selected for Phase A study. SPHEREx would carry out the first all-sky spectral survey in the near infrared. At the end of its two-year mission, SPHEREx would obtain 0.75-to-5$μ$m spectra of every 6.…
View article: The radial acceleration relation in disc galaxies in the MassiveBlack-II simulation
The radial acceleration relation in disc galaxies in the MassiveBlack-II simulation Open
A strong correlation has been measured between the observed centripetal accelerations in galaxies and the accelerations implied by the baryonic components of galaxies. This empirical radial acceleration relation must be accounted for in an…
View article: The descendants of the first quasars in the BlueTides simulation
The descendants of the first quasars in the BlueTides simulation Open
Supermassive blackholes with masses of a billion solar masses or more are\nknown to exist up to $z=7$. However, the present-day environments of the\ndescendants of first quasars is not well understood and it is not known if they\nlive in m…
View article: IMPACT OF BARYONIC PHYSICS ON INTRINSIC ALIGNMENTS
IMPACT OF BARYONIC PHYSICS ON INTRINSIC ALIGNMENTS Open
We explore the effects of specific assumptions in the subgrid models of star formation and stellar and active galactic nucleus feedback on intrinsic alignments of galaxies in cosmological simulations of the “MassiveBlack-II” family. Using …
View article: Cosmological Simulation Studies of the Intrinsic Alignment of Galaxies
Cosmological Simulation Studies of the Intrinsic Alignment of Galaxies Open
Weak lensing refers to a statistical study of the small distortions of the images of galaxy shapes due to the gravitational deflection of light by the foreground structures. Weak lensing has emerged as a powerful probe to constrain cosmolo…
View article: Intrinsic alignments of disc and elliptical galaxies in the MassiveBlack-II and Illustris simulations
Intrinsic alignments of disc and elliptical galaxies in the MassiveBlack-II and Illustris simulations Open
We study the shapes and intrinsic alignments of discs and elliptical galaxies in the MassiveBlack-II (MBII) and Illustris cosmological hydrodynamic simulations, with volumes of (100 h−1 Mpc)3 and (75 h−1 Mpc)3, respectively. We find that s…
View article: Investigating galaxy-filament alignments in hydrodynamic simulations using density ridges
Investigating galaxy-filament alignments in hydrodynamic simulations using density ridges Open
In this paper, we study the filamentary structures and the galaxy alignment along filaments at redshift z = 0.06 in the MassiveBlack-II simulation, a state-of-the-art, high-resolution hydrodynamical cosmological simulation which includes s…
View article: Galaxy shapes and alignments in the MassiveBlack-II hydrodynamic and dark matter-only simulations
Galaxy shapes and alignments in the MassiveBlack-II hydrodynamic and dark matter-only simulations Open
We compare the shapes and intrinsic alignments of galaxies in the MassiveBlack-II (MBII) cosmological hydrodynamic simulation to those in an identical dark matter-only (DMO) simulation. Understanding the impact of baryonic physics on galax…
View article: THE FORMATION OF MILKY WAY–MASS DISK GALAXIES IN THE FIRST 500 MILLION YEARS OF A COLD DARK MATTER UNIVERSE
THE FORMATION OF MILKY WAY–MASS DISK GALAXIES IN THE FIRST 500 MILLION YEARS OF A COLD DARK MATTER UNIVERSE Open
Whether or not among the myriad tiny protogalaxies there exists a population with similarities to present-day galaxies is an open question. We show, using BlueTides, the first hydrodynamic simulation large enough to resolve the relevant sc…
View article: Intrinsic alignments of galaxies in the MassiveBlack-II simulation: analysis of two-point statistics
Intrinsic alignments of galaxies in the MassiveBlack-II simulation: analysis of two-point statistics Open
The intrinsic alignment of galaxies with the large-scale density field is an important astrophysical contaminant in upcoming weak lensing surveys. We present detailed measurements of the galaxy intrinsic alignments and associated elliptici…