Sixteenth Marcel Grossmann Meeting

Session

Monday Plenary Session

P1

5 Jul 2021, 09:30

Conveners

Monday Plenary Session: Block 1 - Events in Relativistics Astrophysics

• Remo Ruffini (ICRANet)

Description

Monday plenary session

Presentation materials

YouTube Link

1063. SRG Orbital Observatory: X-Ray map of the Universe with a million accreting supermassive black holes

Prof. Rashid Sunyaev

05/07/2021, 09:30

Plenary talk

SRG with German (eRosita) and Russian (ART-XC) X-Ray telescopes was launched by RosKosmos on July 13th of 2019 from Baikonur. During the flight to the L2 point of the Sun-Earth system, SRG performed calibrations and long duration Performance Verification (PV) observations of a dozen of targets and deep fields. Starting in the middle of December 2019, the SRG scanned the whole sky three times....

42. New results from testing relativistic gravity with radio pulsars

Prof. Michael Kramer (Max-Planck-Institut fuer Radioastronomie)

05/07/2021, 10:05

Plenary talk

We experience a golden era in testing and exploring relativistic gravity. Whether it is results from gravitational wave detectors, satellite or lab experiments, radio astronomy plays an important complementary role. Here one can mention the cosmic microwave background, black hole imaging and, obviously, binary pulsars. This talk will concentrate on the latter and new results from studies of...

138. A 21-solar mass black hole in the X-ray binary system Cygnus X-1

Prof. James Miller-Jones (International Centre for Radio Astronomy Research - Curtin University)

05/07/2021, 10:40

Plenary talk

The fate of massive stars is influenced by the mass lost to stellar winds over their lifetimes, which limit the masses of the stellar remnants that they eventually produce. In this talk I will discuss our recent redetermination of the black hole mass in the X-ray binary system Cygnus X-1. At 21 solar masses, our measurement makes this the most massive dynamically-confirmed stellar-mass black...

139. Black Holes in the 21cm signal of HI from cosmic dawn

Prof. Felix Mirabel

05/07/2021, 11:15

Plenary talk

A deep absorption in the 21-cm line of atomic hydrogen (HI), redshifted to the epoch of cosmic dawn (z ~ 20), was reported by the EDGES experiment. To explain that absorption trough it has been proposed that either an additional exotic cooling mechanism, or a brighter radio background emission previously unaccounted for is needed. Here we discuss the possibility that the required cosmic radio...