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- W4292342823 endingPage "101104" @default.
- W4292342823 startingPage "101104" @default.
- W4292342823 abstract "In the era of precision cosmology it has became crucial to find new and competitive probes to estimate cosmological parameters, in an effort of finding answers to the current cosmological tensions/discrepancies. In this work, we show the possibility of using observations of Super Massive Black Hole (SMBH) shadows as an anchor for the distance ladder, substituting the sources usually exploited for such purpose, such as Cepheid variable stars. Compared to the standard approaches, the use of SMBH has the advantage of not needing to be anchored with distance calibrators outside the Hubble flow since the shadows physical size can be estimated knowing the mass of the SMBH. Furthermore, SMBH are supposed to inhabit the center of all galaxies which, in principle, means that we can measure the size of the shadows in any Supernova type Ia host galaxy. Under the assumption that the mass of the SMBH can be accurately and reliably estimated, we find that the Hubble constant can be constrained with a $approx10%$ precision even considering current experimental design of ground-based interferometers. By constructing a SMBH catalogue based on a specific choice of the SMBH Mass Function (BHMF), we forecast the constraints on the Hubble constant, finding that a precision of $approx4%$ may be within reach of future interferometers." @default.
- W4292342823 created "2022-08-19" @default.
- W4292342823 creator A5024002599 @default.
- W4292342823 creator A5046272995 @default.
- W4292342823 date "2022-09-01" @default.
- W4292342823 modified "2023-10-16" @default.
- W4292342823 title "Climbing out of the shadows: Building the distance ladder with black hole images" @default.
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