Published work with PyCS

You can find the published articles making use of PyCS below. Please let us know if you have published a paper that make use of PyCS. We will include it in this list.

PyCS methodology and software publication

• Tewes et al. 2013a

  • COSMOGRAIL - XI. Techniques for time delay measurement in presence of microlensing, A&A 553 A120.

  • This paper describes the original curve-shifting algorithms of PyCS.

• Millon et al. 2020c

  • PyCS3: A Python toolbox for time-delay measurements in lensed quasars, JOSS 5 53 2654.

  • This paper briefly describes the functionality of the package.

Measuring time delays in lensed quasars

• Tewes et al. 2013b

  • COSMOGRAIL - XIII. Time delays and 9-yr optical monitoring of the lensed quasar RX J1131−1231, A&A 556 A22

  • This work presents the application of PyCS to real data. It reports the measurement of time delays in the lensed quasar RXJ1131-1231 from the COSMOGRAIL data.

• Eulaers et al. 2013

  • COSMOGRAIL - XII. Time delays of the doubly lensed quasars SDSS J1206+4332 and HS 2209+1914, A&A 553 A121

  • Time-delay measurements of lensed quasars SDSS J1206+4332 and HS 2209+1914 with data from the Swiss Euler telescope, Himalayan Chandra Telescope (HCT) and Mercator telescope.

• Rathna Kumar et al. 2013

  • COSMOGRAIL - XIV. Time delay of the doubly lensed quasar SDSS J1001+5027, A&A 557 A44

  • Time-delay measurements of lensed quasars SDSS J1001+5027 with data from the Himalayan Chandra Telescope (HCT), Mercator and 1-5m Maidanak Observatory telescopes.

• Goiecoechea and Shalyapin 2016

  • Gravitational lens system SDSS J1339+1310: microlensing factory and time delay, A&A 596 A77

  • Presentation of the delay of SDSS J1339+1310 and of the microlensing variability affecting this system.

• Giannini et al. 2017

  • MiNDSTEp differential photometry of the gravitationally lensed quasars WFI 2033-4723 and HE 0047-1756: microlensing and a new time delay, A&A 597 A49

  • Time-delay measurement of lensed quasars HE 0047-1756 and WFI 2033-4723.

• Bonvin et al. 2017

  • H0LiCOW – V. New COSMOGRAIL time delays of HE 0435−1223: H0 to 3.8 per cent precision from strong lensing in a flat ΛCDM model, MNRAS 465 4

  • This paper presents the new measurement of Hubble constant by the H0LiCOW collaboration.

• Courbin et al. 2017

  • COSMOGRAIL - XVI. Time delays for the quadruply imaged quasar DES J0408−5354 with high-cadence photometric monitoring, A&A 609 A71

  • This paper presents the time delays measurement of DES0408 with only one season of monitoring at high-cadence and high signal-to-noise.

• Bonvin et al. 2018

  • COSMOGRAIL - XVII. Time delays for the quadruply imaged quasar PG 1115+080, A&A 616 A183

  • Time-delay measurement of lensed quasar PG1115+080. This papers also introduce a new framework for combining the PyCS estimator parameters.

• Birrer et al. 2019

  • H0LiCOW - IX. Cosmographic analysis of the doubly imaged quasar SDSS 1206+4332 and a new measurement of the Hubble constant, MNRAS 484 4

  • New measurement of the Hubble Constant by the H0LiCOW collaboration, using the lens system SDSS J1206+4332.

• Bonvin et al. 2019

  • COSMOGRAIL - XVIII. time delays of the quadruply lensed quasar WFI2033−4723, A&A 629 A97

  • This paper present the time delays of lensed quasar WFI 2033-4723 from 14 years of data taken at the Euler Swiss telescope, 13 years from the SMARTS telescope and from one season of high-cadence data at the MPIA 2m2 telescope.

• Millon et al. 2020a

  • COSMOGRAIL - XIX. Time delays in 18 strongly lensed quasars from 15 years of optical monitoring, A&A 640 A105

  • This paper reports the measurement of time-delay in 18 lensed quasars. It also presents the new PyCS automated time-delay measurement pipeline.

• Millon et al. 2020b

  • TDCOSMO - II. 6 new time delays in lensed quasars from high-cadence monitoring at the MPIA 2.2m telescope, accepted in A&A

  • Data release and time-delay measurements of 6 lensed quasars monitored at high cadence and high signal-to-noise from the MPIA 2m2 telescope.

Time-Delay Challenge (TDC)

• Liao et al. 2015

  • Strong Lens Time Delay Challenge: II. Results of TDC1, ApJ 800 1

  • This paper presents the results of the TDC and compares the performance of several curve-shifting algorithms

• Bonvin et al. 2016

  • COSMOGRAI - XV. Assessing the achievability and precision of time-delay measurements, A&A 585 A88

  • This paper shows the performance of PyCS on the TDC simulated light curves.

Reverberation Mapping

• Chan et al. 2020

  • Twisted quasar light curves: implications for continuum reverberation mapping of accretion disks, A&A 636 A52

  • This paper explores the implication of the deformation of the light curves between different bands when measuring time delays.

Microlensing studies

• Sluse & Tewes 2014

  • Imprints of the quasar structure in time-delay light curves: Microlensing-aided reverberation mapping, A&A 571 A60

  • This work demonstrates that microlensing can help to disentangle the light coming from the accretion and light being reverberated in the Broad Line Region (BLR), allowing the measurement of the size of the BLR.

• Cornachione et al. 2020

  • A Microlensing Accretion Disk Size Measurement in the Lensed Quasar WFI 2026-4536, ApJ 895 2

  • This paper presents the accretion disk size measurement of the lensed quasar WFI 2026-4536 using microlensing.

Measuring time delays in lensed Supernovae

• Rodney et al. 2016

  • SN Refsdal: Photometry and time delay measurements of th efirst Einstein cross supernovae, ApJ 820 1

  • This paper presents the measurement of the time delays of supernovae Refsdal in the Hubble Frontier Field Cluster MACS J1149

• Huber et al. 2019

  • Strongly lensed SNe Ia in the era of LSST: observing cadence for lens discoveries and time-delay measurements, A&A 631 A161

  • This papers presents forecast of the precision on time delays of future lensed supernovae that can be reached with the LSST.