111 citations · 1.2k across the 75 of their papers we have counts for
25 papers · 1 filter
Euclid Quick Data Release (Q1) Euclid spectroscopy of quasars. 2. Physical properties from spectral fitting
Euclid Collaboration, J. Calhau, G. Calderone +312
A substantial volume of spectroscopic data has become available with the Euclid Data Release (Q1), which represents a unique opportunity to study quasars (QSOs) in the Euclid Deep…
Evolution of Virial Clouds - II: From the Formation of First Stars up to their Explosion
Noraiz Tahir, Asghar Qadir, Francesco De Paolis +1
The existence of cold gas and dust clouds close to the cosmic microwave background (CMB) temperature was proposed as a potential repository for a significant fraction of the missin…
Evidence of a sub-solar star in a microlensing event toward the LMC
A. Franco, A. A. Nucita, F. De Paolis +1
Gravitational microlensing is known to be an impressive tool for searching dark, small, and compact objects that are missed by the usual astronomical observations. In this paper, b…
On the Galactic Halos Rotation by Planck Data
Noraiz Tahir, Francesco De Paolis, Asghar Qadir +1
As galactic halos are not directly visible, there are many ambiguities regarding their composition and rotational velocity. Though most of the dark matter is non-baryonic, {\it som…
Description and Application of the Surfing Effect
Michele Maiorano, Francesco De Paolis, Achille A. Nucita
The standard technique for very low-frequency gravitational wave detection is mainly based on searching for a specific spatial correlation in the variation of the times of arrival…
Virial clouds to explain rotational asymmetry in galactic halos
Asghar Qadir, Noraiz Tahir, Francesco De Paolis +1
The rotation of the galactic objects has been seen by asymmetric Doppler shift in the CMB data. Molecular hydrogen clouds at virial temperature may contribute to the galactic halo…
The rotational kinetic Sunyaev-Zeldovich contribution to the temperature asymmetry toward the M31 halo
Noraiz Tahir, Francesco De Paolis, Asghar Qadir +1
Temperature asymmetry in the cosmic microwave background (CMB) data by the Planck satellite has been discovered and analyzed toward several nearby edge-on spiral galaxies. It provi…
Principles of Gravitational-Wave Detection with Pulsar Timing Arrays
Michele Maiorano, Francesco De Paolis, Achille A. Nucita
Pulsar timing uses the highly stable pulsar spin period to investigate many astrophysical topics. In particular, pulsar timing arrays make use of a set of extremely well-timed puls…
Advantages of Including Globular Cluster Millisecond Pulsars in Pulsar Timing Arrays
M. Maiorano, F. De Paolis, A. A. Nucita +1
Even though Pulsar Timing Arrays already have the potential to detect the gravitational wave background by finding a quadrupole correlation in the timing residuals, this goal has n…
Seeing the halo rotation of nearby spiral galaxies using Planck data
Noraiz Tahir, Francesco De Paolis, Asghar Qadir +1
The rotation of the galactic halos is a fascinating topic which is still waiting to be addressed. Planck data has shown the existence of a temperature asymmetry towards the halo of…
Searching for Intermediate Mass Black Holes in the Milky Way's galactic halo
A. Franco, A. A. Nucita, F. De Paolis +2
Intermediate Mass Black Holes (IMBHs) are a class of black holes with masses in the range , which can not directly derive from stellar evolution. Looking for…
Including Millisecond Pulsars inside the Core of Globular Clusters in Pulsar Timing Arrays
Michele Maiorano, Francesco de Paolis, Achille Nucita
We suggest the possibility of including millisecond pulsars inside the core of globular clusters in pulsar timing array experiments. Since they are very close to each other, their…
Gravitational microlensing constraints on primordial black holes by Euclid
Lindita Hamolli, Mimoza Hafizi, Francesco De Paolis +1
Primordial black holes (PBHs) may form in the early stages of the Universe via the collapse of large density perturbations. Depending on the formation mechanism, PBHs may exist and…
Messier 81's Planck view vs its halo mapping
V. G. Gurzadyan, F. De Paolis, A. A. Nucita +8
This paper is a follow-up of a previous paper about the M82 galaxy and its halo based on Planck observations. As in the case of M82, so also for the M81 galaxy a substantial North-…
A catalogue sample of low mass galaxies observed in X-rays with central candidate black holes
A. A. Nucita, L. Manni, F. De Paolis +2
We present a sample of -ray selected candidate black holes in 51 low mass galaxies with {and mass up to M} obtained by cross-correlating the NAS…
Triangulum galaxy viewed by Planck
F. De Paolis, V. G. Gurzadyan, A. A. Nucita +9
We used Planck data to study the M33 galaxy and find a substantial temperature asymmetry with respect to its minor axis projected onto the sky plane. This temperature asymmetry cor…
Planck view of the M82 galaxy
V. G. Gurzadyan, F. De Paolis, A. A. Nucita +8
Planck data towards the galaxy M82 are analyzed in the 70, 100 and 143 GHz bands. A substantial north-south and East-West temperature asymmetry is found, extending up to 1 degree f…
XMM-Newton observation of a sample of four close dSph galaxies
L. Manni, A. A. Nucita, F. De Paolis +2
We present the results of the analysis of deep archival \sat\ observations towards the dwarf spheroidal galaxies Draco, Leo I, Ursa Major II and Ursa Minor in the Milky Way neighbo…
Planck revealed bulk motion of Centaurus A lobes
F. De Paolis, V. G. Gurzadyan, A. A. Nucita +8
Planck data towards the active galaxy Centaurus A are analyzed in the 70, 100 and 143 GHz bands. We find a temperature asymmetry of the northern radio lobe with respect to the sout…
Planck's confirmation of the M31 disk and halo rotation
F. De Paolis, V. G. Gurzadyan, A. A. Nucita +8
Planck's data acquired during the first 15.4 months of observations towards both the disk and halo of the M31 galaxy are analyzed. We confirm the existence of a temperature asymmet…
M31 Pixel Lensing PLAN Campaign: MACHO Lensing and Self Lensing Signals
S. Calchi Novati, V. Bozza, I. Bruni +14
We present the final analysis of the observational campaign carried out by the PLAN (Pixel Lensing Andromeda) collaboration to detect a dark matter signal in form of MACHOs through…
Polarization in microlensing towards the Galactic bulge
G. Ingrosso, S. Calchi Novati, F. De Paolis +4
Gravitational microlensing, when finite size source effects are relevant, provides an unique tool for the study of source star stellar atmospheres through an enhancement of a chara…
Estimating the parameters of the Sgr A* black hole
F. De Paolis, G. Ingrosso, A. A. Nucita +2
The measurement of relativistic effects around the galactic center may allow in the near future to strongly constrain the parameters of the supermassive black hole likely present a…
M31 pixel lensing event OAB-N2: a study of the lens proper motion
S. Calchi Novati, M. Dall'Ora, A. Gould +12
We present an updated analysis of the M31 pixel lensing candidate event OAB-N2 previously reported in Calchi Novati et al. (2009). Here we take advantage of new data both astrometr…