Special MSI Seminar - An algebraic approach for recovering an unknown timing solution from a list of TOAs

Barak Zackay (Weizmann Institute)

Jul 26, 2022 2:30 PM
Location: MSI Conference Room + Zoom
Special Seminar

Title: An algebraic approach for recovering an unknown timing solution from a list of TOAs

Abstract:

Fast radio burst (FRB) progenitors are expected to be neutron stars. Solving the astrophysical conundrum of their origin is one of the central challenges in astrophysics. If a periodic solution for their arrival time is discovered, we will immediately learn of their age, magnetic field, and binary properties. Finding such a periodicity is a hard algorithmic question, especially if FRB progenitors are predominantly in binary systems. Interestingly, the same problem arises in gamma-ray pulsar astronomy, where solving a timing model for thousands of Fermi-LAT unassociated sources could identify them as pulsars, reveal their exact position and nature. The timing problem is currently unsolvable in the case of a binary system, and even for single pulsars it is solvable only under restrictive conditions using substantial computational resources. In this talk, I will show a novel algebraic framework for solving the timing problem using lattice reduction techniques. As a proof of concept, I present the solution of a previously intractable problem with a runtime of a few seconds. Then, I will discuss the limitations of the proposed approach and the path towards applying these methods to real data. Time permitting, I will discuss a possible path towards implementing similar methods to recover pulsars using CHIME.




Upcoming Events

Astro-PH Discussion

Aug 16, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

EPOD Discussion

Aug 17, 2022 1:00 PM
Location: Hybrid
Weekly, Other Event
Read More ⇒

Neutron Star Discussion

Aug 18, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Astro-PH Discussion

Aug 23, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

EPOD Discussion

Aug 24, 2022 1:00 PM
Location: Hybrid
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Aug 25, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

EPOD Discussion

Aug 31, 2022 1:00 PM
Location: Hybrid
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Sep 1, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Sep 8, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Sep 15, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Sep 22, 2022 3:30 PM
Weekly, Other Event
Read More ⇒

Neutron Star Discussion

Sep 29, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Oct 6, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Oct 13, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Oct 20, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Oct 27, 2022 3:30 PM
Weekly, Other Event
Read More ⇒

Neutron Star Discussion

Nov 3, 2022 3:30 PM
Weekly, Other Event
Read More ⇒

Neutron Star Discussion

Nov 10, 2022 3:30 PM
Weekly, Other Event
Read More ⇒

Neutron Star Discussion

Nov 17, 2022 3:30 PM
Other, Weekly Event
Read More ⇒

Neutron Star Discussion

Nov 24, 2022 3:30 PM
Other, Weekly Event
Read More ⇒