Deep Chandra observations of PLCKG287.0+32.9: A clear detection of a shock front in a heated former cool core

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Volume 697 (May 2025)

A&A, 697 (2025) A72

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Table C.3.

Results of the deprojected spectral fit along a 120°-wide sector enclosing the two fronts identified in Sect. 4.

Wedge no. (width)	Net counts	kT (keV)	n_e (10⁻³ cm⁻³)	p (10⁻¹¹ erg cm⁻³)
#1 (50″)	6459	$9 . 92_{- 1.12}^{+ 1.75}$ $9.92_{-1.12}^{+1.75}$	$5 . 04_{- 0.11}^{+ 0.11}$ $5.04_{-0.11}^{+0.11}$	$14 . 65_{- 1.68}^{+ 2.60}$ $14.65_{-1.68}^{+2.60}$
#2 (8″)	1174	$6 . 13_{- 2.11}^{+ 3.69}$ $6.13_{-2.11}^{+3.69}$	$3 . 70_{- 0.35}^{+ 0.47}$ $3.70_{-0.35}^{+0.47}$	$6 . 64_{- 2.37}^{+ 4.09}$ $6.64_{-2.37}^{+4.09}$
——————————– Cold front(R_cf = 295 ± 7 kpc)——————————–
#3 (17″)	2013	$10 . 25_{- 1.36}^{+ 2.28}$ $10.25_{-1.36}^{+2.28}$	$3 . 33_{- 0.08}^{+ 0.08}$ $3.33_{-0.08}^{+0.08}$	$10 . 01_{- 1.35}^{+ 2.24}$ $10.01_{-1.35}^{+2.24}$
——————————– Shock front (R_sh = 389 ± 6 kpc) ——————————–
#4 (115″)	5649	$7 . 89_{- 0.80}^{+ 0.90}$ $7.89_{-0.80}^{+0.90}$	$0 . 85_{- 0.02}^{+ 0.02}$ $0.85_{-0.02}^{+0.02}$	$1 . 97_{- 0.20}^{+ 0.23}$ $1.97_{-0.20}^{+0.23}$
#5 (100″)	1500	$5 . 28_{- 0.82}^{+ 1.14}$ $5.28_{-0.82}^{+1.14}$	$0 . 37_{- 0.01}^{+ 0.01}$ $0.37_{-0.01}^{+0.01}$	$0 . 58_{- 0.09}^{+ 0.13}$ $0.58_{-0.09}^{+0.13}$

Notes. Column 1: wedge number (width in arcsec); column 2: net counts in the [0.5 − 7.0] keV band; column 3: deprojected temperature; column 4: electron density; column 5: pressure. The best-fit absorbing column density, left as a free parameter but linked among the different annuli, is N_H = 1.83 ± 0.03 × 10²¹ cm⁻². The derived classification as cold front and shock front is indicated at the boundary of the second and third wedge, respectively.

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