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ABOUT


POSYDON : POpulation SYnthesis with Dynamic simulatiON grids

A next-generation single and binary-star population synthesis code incorporating full stellar structure and evolution modeling with the use of MESA.

POSYDON is being developed by a collaborative team of astrophysicists and computer scientists led by Principal Investigators Tassos Fragos (Université de Genève) and Vicky Kalogera (Northwestern University). The code is modular in many aspects and the user can specify initial population properties and adopt choices that determine how stellar evolution proceeds. Populations are simulated with the use of MESA evolutionary tracks for single, non-interacting, and interacting binaries organized in grids. Machine-learning methods are incorporated and applied on the grids for classification and various interpolation calculations, and the development of irregular grids guided by active learning, for computational efficiency.

The code will be made public to the community in versions of increasing complexity and capabilities with appropriate documentation and test examples. In addition, databases of evolutionary grids, general-purpose population synthesis models will also be made public. The databases will be accompanied by a user-friendly query system.

NEWS


  • [July 1st, 2021] We posted on the arXiv a new paper about the Probing the progenitors of spinning binary black-hole mergers with long gamma-ray bursts (Bavera et al.)
  • [June 10th, 2021] We posted on the arXiv a new paper about the explodability of single massive star progenitors of stripped-envelope supernovae (Zapartas et al.)
  • [December 3rd, 2020] We posted on the arXiv a new paper about the role of core-collapse physics in the observability of black-hole neutron-star mergers as multi-messenger sources (Rom├ín-Garza et al.)
  • [October 30th, 2020] We posted on the arXiv a new paper about the impact of mass-transfer physics on the observable properties of field binary black hole populations (Bavera et al.)

TEAM


Jeff Andrews

Northwestern University

Simone Bavera

Université de Genève

Christopher Berry

Northwestern University

Scott Coughlin

Northwestern University

Aaron Dotter

Northwestern University

Tassos Fragos

Université de Genève

Prabin Giri

Iowa State University

Vicky Kalogera

Northwestern University

Aggelos Katsaggelos

Northwestern University

Konstantinos Kovlakas

Université de Genève

Devina Misra

Université de Genève

Ying Qin

Northwestern University

Jaime Román-Garza

Université de Genève

Kyle Rocha

Northwestern University

Juan Gabriel Serra Pérez

Northwestern University

Petter Alexander Stahle

Université de Genève

Elizabeth Teng

Northwestern University

Xu Teng

Iowa State University

Goce Trajcevski

Iowa State University

Nam Tran


(Past member)

University of Copenhagen

Zepei Xing

Université de Genève

Manos Zapartas

Université de Genève

FUNDING