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A measurement of the Galactic plane mass density from binary pulsar accelerations
Sukanya Chakrabarti, Philip Chang, Michael T. Lam +2
We use compiled high-precision pulsar timing measurements to directly measure the Galactic acceleration of binary pulsars relative to the Solar System barycenter. Given the vertica…
Towards a direct measure of the Galactic acceleration
Sukanya Chakrabarti, Jason Wright, Philip Chang +9
High precision spectrographs can enable not only the discovery of exoplanets, but can also provide a fundamental measurement in Galactic dynamics. Over about ten year baselines, th…
Accretion of Ornamental Equatorial Ridges on Pan, Atlas and Daphnis
Alice C. Quillen, Fatima Zaidouni, Miki Nakajima +1
We explore scenarios for the accretion of ornamental ridges on Saturn's moons Pan, Atlas, and Daphnis from material in Saturn's rings. Accretion of complex shaped ridges from ring…
Birth Sites of Young Stellar Associations and Recent Star Formation in a Flocculent Corrugated Disk
Alice C. Quillen, Alex R. Pettitt, Sukanya Chakrabarti +3
With backwards orbit integration we estimate birth locations of young stellar associations and moving groups identified in the solar neighborhood that are younger than 70 Myr. The…
Boids in a Loop: Self-Propelled particles within a Flexible Boundary
A. C. Quillen, J. P. Smucker, A. Peshkov
We numerically explore the behavior of repelling and aligning self-propelled polar particles (boids) in 2D enclosed by a damped flexible and elastic loop-shaped boundary. We observ…
Ricochets on Asteroids: Experimental study of low velocity grazing impacts into granular media
Esteban Wright, Alice Quillen, Juiliana South +6
Spin off events and impacts can eject boulders from an asteroid surface and rubble pile asteroids can accumulate from debris following a collision between large asteroids. These pr…