4 papers
Straight Lightning as a Signature of Macroscopic Dark Matter
Nathaniel Starkman, Jagjit Sidhu, Harrison Winch +1
Macroscopic dark matter (macros) is a broad class of alternative candidates to particle dark matter. These candidates would transfer energy to matter primarily through elastic scat…
An extended Pal 5 stream in Gaia DR2
Nathaniel Starkman, Jo Bovy, Jeremy Webb
We present the results of a detailed search for members of the Pal 5 tidal tail system in Gaia Data Release 2 (DR2). Tidal tails provide a sensitive method for measuring the curren…
A constant characteristic volume density of dark matter haloes from SPARC rotation curve fits
Pengfei Li, Federico Lelli, Stacy S. McGaugh +2
We study the scaling relations between dark matter (DM) haloes and galaxy discs using 175 galaxies from the SPARC database. We explore two cosmologically motivated DM halo profiles…
A New Algorithm to Quantify Maximum Discs in Galaxies
Nathaniel Starkman, Stacy McGaugh, Federico Lelli +1
Maximum disc decompositions of rotation curves place a dynamical upper limit to the mass attributable to stars in galaxies. The precise definition of this term, however, can be vag…