NICER 2021 Workshop

Spring 2021 Data Analysis and Science Workshop

The Spring 2021 NICER Data Analysis and Science Workshop was held virtually from 9 am to 1 pm EDT Monday through Friday of the week of May 10th, 2021.

The primary objective of the workshop was to discuss data analysis techniques and new science results that maximize use of the unique timing and spectroscopy data provided by NICER.

Presentations on Monday and Tuesday covered data selection, background modeling, timing, and spectroscopy. Wednesday, May 12, was set aside for user analysis questions. Science presentations on Thursday and Friday were contributed by members of the community of users. A detailed schedule is shown below.

Presentation topics included:
  • Analysis, calibration, and tutorials
  • Neutron star systems
  • Black hole systems
  • Non-compact stars
  • Active galactic nuclei
  • Long term monitoring of transients.

Recordings of the sessions are provided as links in the agenda below. These will be replaced in the future with a longer-term video storage solution.

Detailed Schedule

All times listed are Eastern U.S. time zone.

Date Session Time Presenter Title
May 10


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Tutorial 1 9:00 - 10:50 K. Gendreau Welcome and Introduction to the NICER Mission (PDF)
Z. Arzoumanian NICER Planning, TOOs, and Guest Observer Program (PDF)
C. Markwardt How to Analyze NICER Data (PDF)
Tutorial 2 11:10 - 13:00 C. Markwardt Screening NICER Data to Increase Available Data (PDF)
C. Markwardt New NICER Software (PDF)
C. Markwardt NICER Calibration Status (PDF)
May 11


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Tutorial 3 9:00 - 10:50 T. Strohmayer Timing and Barycentering of NICER data (PDF)
R. Remillard
M. Corcoran
Modeling the NICER Background (empirical PDF, space weather PDF)
R. Remillard NICER Spectral Fitting - Best Practices (PDF)
Isolated Neutron Stars
(Chair: DJ Pasham)
11:10 - 13:00 Z. Arzoumanian NICER Legacy Science: Sizing Up Neutron Stars (PDF)
K. Rajwade Radio and X-ray evolution of XTE J1810-197
H. An NICER timing of the low-B magnetar CXOU J164710.2-455216
W. Ho Timing young X-ray pulsars for gravitational wave searches
A. Sanna NICER updates on Accreting Millisecond X-ray Pulsars (PDF)
May 12

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Q&A 9:00 - 11:00 NICER Analysis Help Forum (PDF)
May 13

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Accreting Neutron Stars
(Chair: Z. Arzoumanian)
9:00 - 11:15 T. Enoto Enhanced X-ray Emission Coinciding with Giant Radio Pulses from the Crab Pulsar (PDF)
A. Jaodand Long term X-ray timing of the transitional millisecond pulsar PSR J1023+0038
R. Ludlam Utilizing NICER and NuSTAR for NS LMXBs (PDF)
N. Islam A study of super-orbital modulations in 4U 1538-52 with NICER and NuSTAR observations
G. Vasilopoulos Accreting highly-magnetized neutron stars in the Magellanic Clouds seen with NICER
P. Pradhan Clumpy wind studies in HMXB OAO 1657-415 with NICER+NuSTAR (PDF)
D. Leahy AstroSAT Observations of Hercules X-1 (not included in video)
Main Sequence and Other Stars
(Chair: C. Markwardt)
11:30 - 13:00 V. Airapetian Superflares, Coronal Mass Ejections and Energetic Particle Events from Young Suns and Their impact on Chemistry of Young Earths
K. Hamaguchi NICER observations of the solar-type star, kappa1 Cet
R. Paudel A study of flares on EV Lacertae using NICER data
V. Petit Searching for Magnetospheric Interaction in a Doubly Magnetic Binary B-type star with NICER
D.A. Espinoza-Galeas Eta Car's NICER Monitoring Program Using Python (Python workbook)
N. Saffold &
Y. Tokayer
A NICER X-ray view of white dwarf pulsar AR Scorpii
May 14

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AGN & Galaxies
(Chair: E. Cackett)
9:00 - 10:00 H. Earnshaw A broadband NICER+NuSTAR observation of NGC 4190 ULX-1 (PDF)
F. D'Ammando NICER follow-up observations of the flaring blazar BL Lacertae (PDF)
E. Partington Evolution of an ionized obscurer in Mkn 817 (PDF)
Accreting Black Holes
(Chair: R. Remillard)
10:20 - 13:00 A. Tripathi Testing general relativity using X-ray reflection spectroscopy (PDF)
Y. Bhargava Estimating the spin of MAXI J1820+070
A. Marino Tracking the evolution of the accretion flow in MAXI J1820+070 with the JED-SAD model
T. Kawamura Fast variability in MAXI J1820+070 to probe the nature of the inner accretion flow (PDF)
F. Garcia A two-component Comptonisation model for the type-B QPO in MAXI J1348-630 revealed by NICER (PDF)
J. Vadakkumthani Spectral and Timing Studies of the X-ray transient MAXI J1348-630 using NICER and AstroSat Observations (PDF)
M. McCollough A NICER View of the Microquasar Cygnus X-3 (PDF)
Closing remarks Z. Arzoumanian (PDF)