TOOTHBRUSH_S
At radio frequencies, the Toothbrush Cluster is a spectacular source that has been essential in revealing details of the particle acceleration generated during mergers. We propose to map the velocity field of the intracluster medium in this remarkable target with two Resolve pointings. One will probe the radio halo, where particle acceleration is driven by developed turbulence. The second will probe the region between the halo and the 2~Mpc-long radio shock, where strong gradients in the radio spectral index map indicate a transition between turbulence-driven and shock-driven acceleration. Determining and comparing the line broadening and shifts between these regions will provide key information needed to complete physical picture of cosmic ray electron acceleration on the largest scales.
obsid = 201032010 / Unique Observation/Sequence Number
object = TOOTHBRUSH_S / Object name
pi_name = AKAMATSU HIROKI / Proposal Principal Investigator Name
ra = 90.8305159975959 / Right Ascension (Pointing Position) (deg)
dec = 42.2019724562963 / Declination (Pointing Position) (deg)
roll_angle = 278.869151372648 / Roll Angle (deg)
start_time = 2025-02-22T12:59:04 / Start Time of the Observation
stop_time = 2025-02-25T13:16:04 / Stop Time of the Observation
exposure = 166747.26608 / Effective Total Observation Exposure (s)
public_date= 2026-03-11 / Public Date