Foraging with MUSHROOMS: A Mixed-integer Linear Programming Scheduler for Multimessenger Target of Opportunity Searches with the Zwicky Transient Facility

Electromagnetic follow-up of gravitational-wave detections is very resource intensive, taking up hours of limited observation time on dozens of telescopes. Creating more efficient schedules for follow-up will lead to a commensurate increase in counterpart location efficiency without using more teles...

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Veröffentlicht in:The Astrophysical journal Jg. 935; H. 2; S. 87 - 94
Hauptverfasser: Parazin, B., Coughlin, Michael W., Singer, Leo P., Gupta, Vaidehi, Anand, Shreya
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Goddard Space Flight Center The American Astronomical Society 01.08.2022
IOP Publishing
Schlagworte:
Algorithms
Astronomical methods
Astrophysics
Binary stars
Efficiency
Gravitational wave astronomy
Gravitational waves
Integer programming
Linear programming
Mixed integer
Neutron stars
Operations research
Optimization
Schedules
Scheduling
Star mergers
Telescopes
Time domain astronomy
Transient detection
Transient sources
ISSN:0004-637X, 1538-4357
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Zusammenfassung:Electromagnetic follow-up of gravitational-wave detections is very resource intensive, taking up hours of limited observation time on dozens of telescopes. Creating more efficient schedules for follow-up will lead to a commensurate increase in counterpart location efficiency without using more telescope time. Widely used in operations research and telescope scheduling, mixed-integer linear programming is a strong candidate to produce these higher-efficiency schedules, as it can make use of powerful commercial solvers that find globally optimal solutions to provided problems. We detail a new target-of-opportunity scheduling algorithm designed with Zwicky Transient Facility in mind that uses mixed-integer linear programming. We compare its performance to gwemopt, the tuned heuristic scheduler used by the Zwicky Transient Facility and other facilities during the third LIGO–Virgo gravitational-wave observing run. This new algorithm uses variable-length observing blocks to enforce cadence requirements and to ensure field observability, along with having a secondary optimization step to minimize slew time. We show that by employing a hybrid method utilizing both this scheduler and gwemopt, the previous scheduler used, in concert, we can achieve an average improvement in detection efficiency of 3%–11% over gwemopt alone for a simulated binary neutron star merger data set consistent with LIGO–Virgo's third observing run, highlighting the potential of mixed-integer target of opportunity schedulers for future multimessenger follow-up surveys.
Bibliographie:AAS38416
High-Energy Phenomena and Fundamental Physics
GSFC
Goddard Space Flight Center
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0004-637X
1538-4357
DOI:10.3847/1538-4357/ac7fa2