Open Access

Table 2.

Summary of all observations of J1618−3921 used in this work.

Telescope Parkes

Receiver Multi-beam UWL

Backend FB 1 BIT
CPSR-2 Medusa
start Aug. 1999 Aug. 1999 Jan. 2003 Oct. 2019
finish Sep. 2001 Oct. 2001 Jul. 2005 Apr. 2022
Tobs, tot 51 min 1 h14 min 1 h49 min 28 h57 min
f0 (MHz) 1374 1374 1374 2368
BW (MHz) 288 288 288 3328

Nchn 2 2 2 13
σ ¯ ToA $ \bar{\sigma}_{\mathrm{ToA}} $ 93 μs 23 μs 37 μs 32 μs
EFAC 0.98 0.28 0.98
0.93
log10(EQUAD) −9.77 −9.17 −4.29
−4.79

Telescope Nançay MeerKAT

Receiver L-band L-band
Backend BON NUPPI PTUSE
start May 2009 Oct. 2013 Dec. 2014 Mar. 2019
finish Mar. 2011 Oct. 2014 Mar. 2022 Jun. 2022

Tobs, tot 6 h56 min 3 h26 min 48 h55 min 28 h51 min
f0 (MHz) 1398 1484 1484 1284
BW (MHz) 128 512 512 776

Nchn 1 1 4 8
σ ¯ ToA $ \bar{\sigma}_{\mathrm{ToA}} $ 227 μs 193 μs 30 μs 6 μs
EFAC 0.82 0.50 0.86 1.09
log10(EQUAD) −13.82 −5.25 −4.57 −8.43

Notes. For each campaign, the receiver and backend are listed, as well as its data span. The data set is characterised by the total observation time Tobs, tot and the centre frequency and bandwidth, f0 and BW of the receiver. We also list the number of frequency channels, Nchn, each observed bandwidth was subdivided into, the mean ToA uncertainty, σ ¯ ToA $ \bar{\sigma}_{\mathrm{ToA}} $, and the derived white noise parameters EFAC and EQUAD, that were determined with TEMPONEST. The CPSR-2 recorder independently records two frequency bands (1341 MHz and 1405 MHz) and is thus fit with two sets of EFAC and EQUAD values, one for each band.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.