Welcome




The Aarhus-Barcelona FLOWS project aims to observe 1000 Type Ia supernovae (SNe Ia) to obtain systematic limited (better than 3%) distances with minimal observing resources. The outcome of this project will include a measurement of the local Hubble constant and the detection of the peculiar velocities of the SN host galaxies caused by the large scale distribution of dark matter (DM). As a feasibility study these will not be particularly stringent tests, but will enable us to quantify the requirements for a full scale project to measure peculiar velocities from a SNe Ia sample that would be 10 times larger. The aim of this research is to identify the location and distribution in space of the major DM concentration driving our peculiar motion relative to that of the linear Hubble expansion. Ultimately, our work will reveal an expanded understanding of how DM clusters on small scales, and in doing so will also provide fundamental constraints for modern structure formation simulations.

The project is making use of the Las Cumbres Observatory global network, the 8.2m European Southern Observatory's Very Large Telescope at the Paranal Observatory, the 2.5m Nordic Optical Telescope at the Roque de Los Muchachos Observatory, the 3.5m telescope at the Calar Alto Observatory, and the 3.5m New Technology Telescope at the La Silla Observatory.

News

14th Nov 2022: OPTICON time allocation of CAHA telescope.

OPTICON awarded 3 nights of observing time to FLOWS during 2023A with the CAHA telescope. Thee nights will be used to expand the FLOWS supernova sample.

11th Nov 2022: Flows project wins 3 grants

PI Lluís Galbany was awarded 3 grants:
CSIC I-LINK 2021 project (Ref. LINKA20409),
CSIC PIE project (Ref. 20215AT016),
Spanish Ministry Plan Nacional (Ref. PID2020-115253GA-I00)
(Over 3 years, totaling 230k€ or 1.7 million DKK).

22nd Sep 2022: First Flows paper published!

Testing the homogeneity of type Ia Supernovae in near-infrared for accurate distance estimations.
Paper: https://doi.org/10.1051/0004-6361/202243845

Status

Candidates: 205
Targets: 726
Science images: 2,900
Photometric measurements: 211,055
SN measurements: 4,801