92 citations · 315 across the 12 of their papers we have counts for
12 papers
Euclid. IV. The NISP Calibration Unit
Euclid Collaboration, F. Hormuth, K. Jahnke +332
The near-infrared calibration unit (NI-CU) on board Euclid's Near-Infrared Spectrometer and Photometer (NISP) is the first astronomical calibration lamp based on light-emitting dio…
Temperature and density dependent cooling function for H with updated H/H collisional rates
Carla Maria Coppola, François Lique, Francesca Mazzia +2
The energy transfer among the components in a gas determines its fate. Especially at low temperatures, inelastic collisions drive the cooling and the heating mechanisms. In the ear…
An order-disorder phase transition in black-hole star clusters
Jihad Touma, Scott Tremaine, Mher Kazandjian
The centers of most galaxies contain massive black holes surrounded by dense star clusters. The structure of these clusters determines the rate and properties of observable transie…
Secular Instabilities of Keplerian Stellar Discs
Karamveer Kaur, Mher Kazandjian, S. Sridhar +1
We present idealized models of a razor-thin, axisymmetric, Keplerian stellar disc around a massive black hole, and study non-axisymmetric secular instabilities in the absence of ei…
Non-thermal photons and direct photodissociation of H2, HD and HeH+ in the chemistry of the primordial Universe
C. M. Coppola, M. V. Kazandjian, D. Galli +2
Non-thermal photons deriving from radiative transitions among the internal ladder of atoms and molecules are an important source of photons in addition to thermal and stellar sourc…
Constraining cloud parameters using high density gas tracers in galaxies
M. V. Kazandjian, I. Pelupessy, R. Meijerink +4
Far-infrared molecular emission is an important tool used to understand the excitation mechanisms of the gas in the inter-stellar medium of star-forming galaxies. In the present wo…
Modelling Mechanical Heating in Star-Forming Galaxies: CO and 13CO Line Ratios as Sensitive Probes
M. V. Kazandjian, I. Pelupessy, R. Meijerink +2
We apply photo-dissociation region (PDR) molecular line emission models, that have varying degrees of enhanced mechanical heating rates, to the gaseous component of simulations of…
Diagnostics of the molecular component of PDRs with mechanical heating. II: line intensities and ratios
M. V. Kazandjian, R. Meijerink, I. Pelupessy +2
CO observations in active galactic nuclei and star-bursts reveal high kinetic temperatures. Those environments are thought to be very turbulent due to dynamic phenomena such as out…
Radiative and mechanical feedback into the molecular gas of NGC 253
M. J. F. Rosenberg, M. V. Kazandjian, P. P. van der Werf +5
Starburst galaxies are undergoing intense periods of star formation. Understanding the heating and cooling mechanisms in these galaxies can give us insight to the driving mechanism…
The Doubling of Stellar Black Hole Nuclei
Mher V. Kazandjian, Jihad R. Touma
It is strongly believed that Andromeda's double nucleus signals a disk of stars revolving around its central super-massive black hole on eccentric Keplerian orbits with nearly alig…
Diagnostics of the Molecular Component of PDRs with Mechanical Heating
M. V. Kazandjian, R. Meijerink, I. Pelupessy +2
Context. Multitransition CO observations of galaxy centers have revealed that significant fractions of the dense circumnuclear gas have high kinetic temperatures, which are hard to…
Gauss's method for secular dynamics, softened
J. R. Touma, S. Tremaine, M. V. Kazandjian
We show that the algorithm proposed by Gauss to compute the secular evolution of gravitationally interacting Keplerian rings extends naturally to softened gravitational interaction…