Table 1.

Nominal Plasma Parameters at Comet 67P

Parameter	Weakly active phase	Intermediately/strongly active phase Solar wind ion cavity	Diamagnetic cavity
np (cm−3)	1–2a	~0b	~0c
Vp (km/s)	300–600d	~0b	~0c
nH 2O+ (cm−3)	50–200 (near comet)e	50–400f	100–1,500g
V H 2O+ (km/s)	30–60 (near comet/mainly antisunward)d	10–40 (mostly antisunward)f	2–4 (mostly radially outward from comet)h
B (nT)	10–24	20–37	<1c
f di (Hz)	1.3–3.7 0.2–0.9 (near comet)	0.07–0.8	0.02–0.2

Note. Here, n_p is the proton density, V_p is the proton speed, n_{H 2O+} is the H₂O⁺ ion density, V_{H 2O+} is the H₂O⁺ ion velocity, B is the magnetic field magnitude, and f _di is the ion inertial frequency.

^aMeier et al. (2016).

^bBehar et al. (2017).

^cGoetz et al. (2016).

^dNilsson, Wieser, Behar, Wedlund, Kallio, et al. (2015).

^eGunell et al. (2017).

^fVolwerk et al. (2016).

^gHenri et al. (2017).

^hOdelstad et al. (2018).