14 papers
Is NGC 6752 Hosting a Single or a Binary Black Hole?
Monica Colpi, Michela Mapelli, Andrea Possenti
The five millisecond pulsars that inhabit NGC 6752 display locations or accelerations remarkably different with respect to all other pulsars known in globular clusters. This may re…
Spin-perpendicular kicks from evanescent binaries formed in the aftermath of rotational core-collapse and the nature of the observed bimodal distribution of pulsar peculiar velocities
Monica Colpi, Ira Wasserman
If rotating core collapse leads to the formation of a proto-neutron star binary in super-close orbit, then the lighter star, propelled toward the minimum stable mass, explodes. The…
Young compact objects in the Solar vicinity
S. B. Popov, M. E. Prokhorov, M. Colpi +2
We present Log N -- Log S distribution for close-by young isolated neutron stars. On the basis of this distribution it is shown that the seven ROSAT isolated neutron stars (if they…
Unveiling black holes ejected from globular clusters
Alessia Gualandris, Monica Colpi, Andrea Possenti
Was the black hole in XTE J1118+480 ejected from a globular cluster or kicked away from the galactic disk?
Is NGC6752 hiding a double black hole binary in its core ?
Monica Colpi, Alessia Gualandris, Andrea Possenti
NGC6752 hosts in its halo PSR J1911-5958A, a newly discovered binary millisecond pulsar which is the most distant pulsar ever known from the core of a globular cluster. Interesting…
Young close isolated compact objects
S. B. Popov, M. E. Prokhorov, M. Colpi +2
We suggest that the seven radio-quiet isolated neutron stars observed with ROSAT are young cooling objects associated to recent near-by supernova explosions which formed runaway st…