Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Mohammadtaher Safarzadeh"'
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 488:L90-L93
The Event Horizon Telescope (EHT), a global very long baseline interferometric array observing at a wavelength of 1.3 mm, detected the first image of the M87 supermassive black hole (SMBH). M87 is a giant elliptical galaxy at the center of Virgo clus
Publikováno v:
The Astrophysical Journal. 930:54
Binary stars can inflate the observed velocity dispersion of stars in dark matter dominated systems such as ultra-faint dwarf galaxies (UFDs). However, the population of binaries in UFDs is poorly constrained by observations, with preferred binary fr
The nature of GW190425, a presumed binary neutron star (BNS) merger detected by the LIGO/Virgo Scientific Collaboration (LVC) with a total mass of $3.4^{+0.3}_{-0.1}$ M$_{\odot}$, remains a mystery. With such a large total mass, GW190425 stands at fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bd672e138a3cf3f556990a22a02a1fe
http://arxiv.org/abs/2012.03070
http://arxiv.org/abs/2012.03070
Autor:
Francis Nimmo, Mohammadtaher Safarzadeh, Joel R. Primack, Enrico Ramirez-Ruiz, Sandra M. Faber
The thermal evolution of rocky planets on geological timescales (Gyr) depends on the heat input from the long-lived radiogenic elements potassium, thorium, and uranium. Concentrations of the latter two in rocky planet mantles are likely to vary by up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::045bca652ba18774239db73a8add977f
http://arxiv.org/abs/2011.04791
http://arxiv.org/abs/2011.04791
Autor:
Aviral Prakash, Federico Schianchi, Sebastiano Bernuzzi, David Radice, Boris Daszuta, Mohammadtaher Safarzadeh, Andrea Endrizzi, Vsevolod Nedora, Domenico Logoteta, Albino Perego
We present a systematic numerical-relativity study of the dynamical ejecta, winds and nucleosynthesis in neutron star merger remnants. Binaries with the chirp mass compatible with GW170817, different mass ratios, and five microphysical equations of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca9e9e30cbebf45fa539a1eb5278395b
http://arxiv.org/abs/2008.04333
http://arxiv.org/abs/2008.04333
Autor:
Mohammadtaher Safarzadeh, Hiromichi Tagawa, Yang Yang, Zoltan Haiman, V. Gayathri, Imre Bartos
The heaviest neutron stars and lightest black holes expected to be produced by stellar evolution leave the mass-range $2.2$ M$_{\odot}\lesssim m \lesssim 5$ M$_\odot$ largely unpopulated. Objects found in this so-called lower mass gap likely originat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9d978f7baf8b600c6297a25901063de
http://arxiv.org/abs/2007.04781
http://arxiv.org/abs/2007.04781
HR 6819 was recently claimed to be a hierarchical triple system of a Be star in a wide orbit around an inner binary system of a black hole (BH) and a B III type star. We argue that this system is unlikely to be a hierarchical triple due to three reas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed65763c88675886c9f2b42f1d6b9570
http://arxiv.org/abs/2006.11872
http://arxiv.org/abs/2006.11872
The circumgalactic medium (CGM) of nearby star-forming galaxies shows clear indications of OVI absorption accompanied by little to no detectable NV absorption. This unusual spectral signature, accompanied by highly non-uniform absorption from lower i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::982d24b5dea2fd0ab299ce6a07cd3084
http://arxiv.org/abs/2006.03066
http://arxiv.org/abs/2006.03066
Publikováno v:
Andrews, J J, Breivik, K, Pankow, C, D'Orazio, D J & Safarzadeh, M 2020, ' LISA and the Existence of a Fast-merging Double Neutron Star Formation Channel ', Astrophysical Journal Letters, vol. 892, no. 1, 9 . https://doi.org/10.3847/2041-8213/ab5b9a
Using a Milky Way double neutron star (DNS) merger rate of 210 Myr$^{-1}$, as derived by the Laser Interferometer Gravitational-Wave Observatory (LIGO), we demonstrate that the Laser Interferometer Space Antenna (LISA) will detect on average 240 (330
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01e4cc421281775c5e72aff00cbd45d5
https://curis.ku.dk/ws/files/287000535/1910.13436.pdf
https://curis.ku.dk/ws/files/287000535/1910.13436.pdf
Binary black holes (BBHs) detected by gravitational wave (GW) observations could be broadly divided into two formation channels: those formed through field binary evolution and those assembled dynamically in dense stellar systems. Each of these forma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd40c458b4599a2d866157dc0c49d40d