Strong Gravity News & Events

Enter words that may appear in the title

Scattering and plunging trajectories in Schwarzschild spacetime

N/A
Speaker
Seth Hopper (CENTRA - IST)
Event date
Venue
GAP room
Event type
Seminars
Abstract: The recent LIGO detections of merging black holes represent the culmination of decades of research into gravitational waves (GWs). One well-known seminal work by Peters and Mathews predicted the GW luminosity of eccentric binaries to leading post-Newtonian (PN) order. Driven largely by the desire to detect GWs from inspirals, the Peters-Mathews work has subsequently been extended through 3.5PN. Less well-known is work by Taylor, which is directly analogous to the Peters-Mathews result, except for scattering binaries. This work has only been extended by one PN order.
Strong Gravity

@ LIGO Livingston

N/A

Gr@v members Pedro Cunha and Carlos Herdeiro at the LIGO LIvingston Control Room, in the state of Louisiana, USA, during a visit to the site. More exciting news should be announced in the summer by the collaboration!

Strong Gravity

From Infinitely Large to Infinitely Small

N/A

Gr@v member António P. Morais gave a talk at Escola Secundária José Régio in Vila do Conde with title "Do Infinitamente Grande ao Infinitamente Pequeno - uma jornada pelas interações fundamentais na natureza". António was an invited speaker to participate in a sequence of seminars entitled "A Biblioteca convida...", and presented to 11th and 12th grade Science and Technology students the four fundamental interactions in nature and how have they shaped our Universe.

Strong Gravity
Cosmology
High Energy Physics
Astrophysics
Celestial Mechanics

Critical behavior of a domain wall collapse

N/A
Speaker
Taishi Ikeda (Nagoya U.)
Event date
Venue
GAP room
Event type
Seminars
Abstract: Gravitational collapse is the one of the most important phenomena of gravity. About 20 years ago, Choptuik discovered a critical collapse in the massless scalar system. After this discovery, many author have shown that the critical behavior appears in the many systems, and it contains to the rich phenomena. In particular, Okawa et al showed the massive scalar system, which has the typical length scale, has a non trivial phase diagram with respect to the critical collapse. In this study, we consider the spherically symmetric domain wall collapse. Because this system also has the typical length scale in the action, it is expected that this system also has the non trivial phase diagram. In order to analyze non-trivial phase diagram of this system, we study the gravitational collapse of this system around threshold of the BH formation. In this talk, as a first step of this study, I will show that the type II critical collapse appears in some parameter region in this system.
Strong Gravity

The first "Alberto" Prize

N/A

The first "Alberto" prize, awarded to a young researcher in the area of General Relativity by the SPRG was presented in the IX Black Holes Workshop to Jorge Rocha, currently at the University of Barcelona. The award is a hologram of an image of Albert Einstein, which was produced by Pedro Pombo and Emanuel Santos, at the U. Aveiro.

Strong Gravity