Arpit Arora
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View article: The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis
The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis Open
The Milky Way is known to contain a stellar bar, as are a significant fraction of disc galaxies across the universe. Our understanding of bar evolution, both theoretically and through analysis of simulations indicates that bars both grow i…
View article: Presenting features, treatment patterns and predictors of outcomes in AL amyloidosis at a tertirary care cancer centre
Presenting features, treatment patterns and predictors of outcomes in AL amyloidosis at a tertirary care cancer centre Open
Introduction Light Chain (AL) amyloidosis is the most common form of systemic amyloidosis, characterized by the deposition of misfolded monoclonal light chains or their fragments in tissues, leading to progressive organ dysfunction. The tr…
View article: OTI on FIRE: Testing the Efficacy of Orbital Torus Imaging to Recover the Galactic Potential
OTI on FIRE: Testing the Efficacy of Orbital Torus Imaging to Recover the Galactic Potential Open
Orbital Torus Imaging (OTI) is a dynamical inference method for determining the Milky Way’s gravitational potential using stellar survey data. OTI uses gradients in stellar astrophysical quantities, such as element abundances, as functions…
View article: Auriga Streams II: orbital properties of tidally disrupting satellites of Milky Way-mass galaxies
Auriga Streams II: orbital properties of tidally disrupting satellites of Milky Way-mass galaxies Open
Galaxies like the Milky Way are surrounded by complex populations of satellites at all stages of tidal disruption. In this paper, we present a dynamical study of the disrupting satellite galaxies in the Auriga simulations that are orbiting…
View article: Shaping the Milky Way: The Interplay of Mergers and Cosmic Filaments
Shaping the Milky Way: The Interplay of Mergers and Cosmic Filaments Open
The large-scale morphology of Milky Way (MW)–mass dark matter halos is shaped by two key processes: filamentary accretion from the cosmic web and interactions with massive satellites. Disentangling their contributions is essential for unde…
View article: Enhancing management of pancreatic cancer: impact of a same day multidisciplinary clinic on access to guideline-directed care
Enhancing management of pancreatic cancer: impact of a same day multidisciplinary clinic on access to guideline-directed care Open
View article: OTI on FIRE: Testing the Efficacy of Orbital Torus Imaging to Recover the Galactic Potential
OTI on FIRE: Testing the Efficacy of Orbital Torus Imaging to Recover the Galactic Potential Open
Orbital Torus Imaging (OTI) is a dynamical inference method for determining the Milky Way's gravitational potential using stellar survey data. OTI uses gradients in stellar astrophysical quantities, such as element abundances, as functions…
View article: The Importance of Rehab in Treating Cancer and Palliative Care Patients
The Importance of Rehab in Treating Cancer and Palliative Care Patients Open
Purpose of review This article aims to describe the role rehabilitation clinicians can play in the care of patients with cancer who also receive palliative care services. We identify the role rehabilitation clinicians can plan in function,…
View article: Cosmological Predictions for Minor Axis Stellar Density Profiles in the Inner Regions of Milky Way–mass Galaxies
Cosmological Predictions for Minor Axis Stellar Density Profiles in the Inner Regions of Milky Way–mass Galaxies Open
ΛCDM cosmology predicts the hierarchical formation of galaxies, which build up mass by merger events and accreting smaller systems. The stellar halo of the Milky Way (MW) has proven to be useful a tool for tracing this accretion history. H…
View article: Bar Formation and Destruction in the FIRE-2 Simulations
Bar Formation and Destruction in the FIRE-2 Simulations Open
The physical mechanisms responsible for bar formation and destruction in galaxies remain a subject of debate. While we have gained valuable insight into how bars form and evolve from isolated idealized simulations, in the cosmological doma…
View article: Efficient and Accurate Force Replay in Cosmological-baryonic Simulations
Efficient and Accurate Force Replay in Cosmological-baryonic Simulations Open
We construct time-evolving gravitational potential models for a Milky Way–mass galaxy from the FIRE-2 suite of cosmological-baryonic simulations using basis function expansions. These models capture the angular variation with spherical har…
View article: On the Corotation of Milky Way Satellites: LMC-mass Satellites Induce Apparent Motions in Outer Halo Tracers
On the Corotation of Milky Way Satellites: LMC-mass Satellites Induce Apparent Motions in Outer Halo Tracers Open
Understanding the physical mechanism behind the formation of a corotating thin plane of satellite galaxies, like the one observed around the Milky Way (MW), has been challenging. The perturbations induced by a massive satellite galaxy, lik…
View article: Cosmological predictions for minor axis stellar density profiles in the inner regions of Milky Way-mass galaxies
Cosmological predictions for minor axis stellar density profiles in the inner regions of Milky Way-mass galaxies Open
$Λ$CDM cosmology predicts the hierarchical formation of galaxies which build up mass by merger events and accreting smaller systems. The stellar halo of the Milky Way has proven to be useful a tool for tracing this accretion history. Howev…
View article: The Imprint of Dark Matter on the Galactic Acceleration Field
The Imprint of Dark Matter on the Galactic Acceleration Field Open
Measurements of the accelerations of stars enabled by time-series extreme-precision spectroscopic observations, pulsar timing, and eclipsing binary stars in the solar neighborhood offer insights into the mass distribution of the Milky Way …
View article: LMC-driven Anisotropic Boosts in Stream–Subhalo Interactions
LMC-driven Anisotropic Boosts in Stream–Subhalo Interactions Open
Dark matter subhalos are predicted to perturb stellar streams; stream morphologies and dynamics can, therefore, constrain the mass distribution of subhalos. Using FIRE-2 simulations of Milky Way–mass galaxies, we demonstrate that the prese…
View article: Efficient and accurate force replay in cosmological-baryonic simulations
Efficient and accurate force replay in cosmological-baryonic simulations Open
We construct time-evolving gravitational potential models for a Milky Way-mass galaxy from the FIRE-2 suite of cosmological-baryonic simulations using basis function expansions. These models capture the angular variation with spherical har…
View article: The imprint of dark matter on the Galactic acceleration field
The imprint of dark matter on the Galactic acceleration field Open
Measurements of the accelerations of stars enabled by time-series extreme-precision spectroscopic observations, from pulsar timing, and from eclipsing binary stars in the Solar Neighborhood offer insights into the mass distribution of the …
View article: The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young Open
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the ‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where t…
View article: The Role of Rehabilitation for the Dying Cancer Patient
The Role of Rehabilitation for the Dying Cancer Patient Open
Purpose of Review This article aims to expand on the role of rehabilitation clinicians in providing whole-person care to the dying cancer patient. We identify symptoms common at the end of life in patients with cancer and demonstrate how r…
View article: The proto-galaxy of Milky Way-mass haloes in the FIRE simulations
The proto-galaxy of Milky Way-mass haloes in the FIRE simulations Open
Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Milky Way (i.e. proto-galaxy). In this work, we contextualize these findings by studying the masses, ages, spatial di…
View article: On the co-rotation of Milky Way satellites: LMC-mass satellites induce apparent motions in outer halo tracers
On the co-rotation of Milky Way satellites: LMC-mass satellites induce apparent motions in outer halo tracers Open
Understanding the physical mechanism behind the formation of a co-rotating thin plane of satellite galaxies, like the one observed around the Milky Way (MW), has been challenging. The perturbations induced by a massive satellite galaxy, li…
View article: Orientations of Dark Matter Halos in FIRE-2 Milky Way–mass Galaxies
Orientations of Dark Matter Halos in FIRE-2 Milky Way–mass Galaxies Open
The shape and orientation of dark matter (DM) halos are sensitive to the microphysics of the DM particles, yet in many mass models, the symmetry axes of the Milky Way’s DM halo are often assumed to be aligned with the symmetry axes of the …
View article: The Debris of the "Last Major Merger" is Dynamically Young
The Debris of the "Last Major Merger" is Dynamically Young Open
The Milky Way's (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the "last major merger." Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where t…
View article: Bar formation and destruction in the FIRE-2 simulations
Bar formation and destruction in the FIRE-2 simulations Open
The physical mechanisms responsible for bar formation and destruction in galaxies remain a subject of debate. While we have gained valuable insight into how bars form and evolve from isolated idealized simulations, in the cosmological doma…
View article: LMC-driven anisotropic boosts in stream--subhalo interactions
LMC-driven anisotropic boosts in stream--subhalo interactions Open
Dark Matter (DM) subhalos are predicted to perturb stellar streams; stream morphologies and dynamics can constrain the mass distribution of subhalos. Using FIRE-2 simulations of Milky Way-mass galaxies, we show that presence of a Large Mag…
View article: The proto-galaxy of Milky Way-mass haloes in the FIRE simulations
The proto-galaxy of Milky Way-mass haloes in the FIRE simulations Open
Observational studies are finding stars believed to be relics of the earliest stages of hierarchical mass assembly of the Milky Way (i.e., proto-Galaxy). In this work, we contextualize these findings by studying the masses, ages, spatial d…
View article: Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation
Public Data Release of the FIRE-2 Cosmological Zoom-in Simulations of Galaxy Formation Open
We describe a public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation (available at http://flathub.flatironinstitute.org/fire ) from the Feedback In Realistic Environments (FIRE) project. FIRE-2 simulations a…
View article: The dark side of FIRE: predicting the population of dark matter subhaloes around Milky Way-mass galaxies
The dark side of FIRE: predicting the population of dark matter subhaloes around Milky Way-mass galaxies Open
A variety of observational campaigns seek to test dark-matter models by measuring dark-matter subhaloes at low masses. Despite their predicted lack of stars, these subhaloes may be detectable through gravitational lensing or via their grav…
View article: The Observable Properties of Galaxy Accretion Events in Milky Way–like Galaxies in the FIRE-2 Cosmological Simulations
The Observable Properties of Galaxy Accretion Events in Milky Way–like Galaxies in the FIRE-2 Cosmological Simulations Open
In the Λ-Cold Dark Matter model of the universe, galaxies form in part through accreting satellite systems. Previous works have built an understanding of the signatures of these processes contained within galactic stellar halos. This work …
View article: Exploring the Subclinical Atherosclerotic Load in Patients With Rheumatoid Arthritis: A Cross-Sectional Study
Exploring the Subclinical Atherosclerotic Load in Patients With Rheumatoid Arthritis: A Cross-Sectional Study Open
Subclinical atherosclerotic load is higher in RA versus controls. The mean CIMT was higher in all age groups in RA compared to the controls. CIMT was significantly higher in the intermediate-risk subgroup (by Framingham risk score) when co…