Institution
Brera Astronomical Observatory
Archive•Milan, Italy•
About: Brera Astronomical Observatory is a archive organization based out in Milan, Italy. It is known for research contribution in the topics: Galaxy & Gamma-ray burst. The organization has 238 authors who have published 452 publications receiving 27362 citations. The organization is also known as: osservatorio astronomico di Brera & Osservatorio Astronomico di Brera.
Topics: Galaxy, Gamma-ray burst, Redshift, Light curve, Blazar
Papers published on a yearly basis
Papers
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Goddard Space Flight Center1, University of Milan2, Brera Astronomical Observatory3, University College London4, Pennsylvania State University5, University of Leicester6, Sonoma State University7, University of California, Berkeley8, Universities Space Research Association9, National Research Council10, University of Southampton11, Los Alamos National Laboratory12, National Radio Astronomy Observatory13, Space Telescope Science Institute14, Max Planck Society15, California Institute of Technology16, University of Texas at Austin17, French Alternative Energies and Atomic Energy Commission18, University of Toronto19, University of Maryland, College Park20, Princeton University21, Lawrence Livermore National Laboratory22, University of Cambridge23, University of California, Santa Barbara24, Rice University25, University of Tokyo26, Saitama University27, University of Florence28
TL;DR: The Swift mission as discussed by the authors is a multi-wavelength observatory for gamma-ray burst (GRB) astronomy, which is a first-of-its-kind autonomous rapid-slewing satellite for transient astronomy and pioneers the way for future rapid-reaction and multiwavelength missions.
Abstract: The Swift mission, scheduled for launch in 2004, is a multiwavelength observatory for gamma-ray burst (GRB) astronomy. It is a first-of-its-kind autonomous rapid-slewing satellite for transient astronomy and pioneers the way for future rapid-reaction and multiwavelength missions. It will be far more powerful than any previous GRB mission, observing more than 100 bursts yr � 1 and performing detailed X-ray and UV/optical afterglow observations spanning timescales from 1 minute to several days after the burst. The objectives are to (1) determine the origin of GRBs, (2) classify GRBs and search for new types, (3) study the interaction of the ultrarelativistic outflows of GRBs with their surrounding medium, and (4) use GRBs to study the early universe out to z >10. The mission is being developed by a NASA-led international collaboration. It will carry three instruments: a newgeneration wide-field gamma-ray (15‐150 keV) detector that will detect bursts, calculate 1 0 ‐4 0 positions, and trigger autonomous spacecraft slews; a narrow-field X-ray telescope that will give 5 00 positions and perform spectroscopy in the 0.2‐10 keV band; and a narrow-field UV/optical telescope that will operate in the 170‐ 600 nm band and provide 0B3 positions and optical finding charts. Redshift determinations will be made for most bursts. In addition to the primary GRB science, the mission will perform a hard X-ray survey to a sensitivity of � 1m crab (� 2;10 � 11 ergs cm � 2 s � 1 in the 15‐150 keV band), more than an order of magnitude better than HEAO 1 A-4. A flexible data and operations system will allow rapid follow-up observations of all types of
3,753 citations
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TL;DR: In this article, photometric redshifts for an uniquely large and deep sample of 522286 objects with AB < 25 in the Canada-France Legacy Survey ''Deep Survey'' fields were presented.
Abstract: We present photometric redshifts for an uniquely large and deep sample of 522286 objects with i'_{AB}<25 in the Canada-France Legacy Survey ``Deep Survey'' fields, which cover a total effective area of 3.2 deg^2. We use 3241 spectroscopic redshifts with 0
1,567 citations
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TL;DR: In 2019, the LIGO Livingston detector observed a compact binary coalescence with signal-to-noise ratio 12.9 and the Virgo detector was also taking data that did not contribute to detection due to a low SINR but were used for subsequent parameter estimation as discussed by the authors.
Abstract: On 2019 April 25, the LIGO Livingston detector observed a compact binary coalescence with signal-to-noise ratio 12.9. The Virgo detector was also taking data that did not contribute to detection due to a low signal-to-noise ratio, but were used for subsequent parameter estimation. The 90% credible intervals for the component masses range from to if we restrict the dimensionless component spin magnitudes to be smaller than 0.05). These mass parameters are consistent with the individual binary components being neutron stars. However, both the source-frame chirp mass and the total mass of this system are significantly larger than those of any other known binary neutron star (BNS) system. The possibility that one or both binary components of the system are black holes cannot be ruled out from gravitational-wave data. We discuss possible origins of the system based on its inconsistency with the known Galactic BNS population. Under the assumption that the signal was produced by a BNS coalescence, the local rate of neutron star mergers is updated to 250-2810.
1,189 citations
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ETH Zurich1, Centre national de la recherche scientifique2, University of Padua3, INAF4, Max Planck Society5, Brera Astronomical Observatory6, California Institute of Technology7, Paris Diderot University8, Institut d'Astrophysique de Paris9, University of Hawaii10, Tohoku University11, University of Nottingham12, University of Arizona13, Space Telescope Science Institute14, University of Bologna15, European Southern Observatory16, University of Edinburgh17, Columbia University18, Durham University19
TL;DR: The zCOSMOS-bright survey as discussed by the authors is a large-redshift survey that is being undertaken in the CosMOS field using 600 hr of observation with the VIMOS spectrograph on the 8 m VLT.
Abstract: zCOSMOS is a large-redshift survey that is being undertaken in the COSMOS field using 600 hr of observation
with the VIMOS spectrograph on the 8 m VLT. The survey is designed to characterize the environments of COSMOS
galaxies from the 100 kpc scales of galaxy groups up to the 100 Mpc scale of the cosmic web and to produce diagnostic
information on galaxies and active galactic nuclei. The zCOSMOS survey consists of two parts: (1) zCOSMOSbright,
a magnitude-limited I-band I_(AB) < 22.5 sample of about 20,000 galaxies with 0.1 < z < 1.2 covering the whole
1.7 deg^2 COSMOS ACS field, for which the survey parameters at z ~ 0.7 are designed to be directly comparable to
those of the 2dFGRS at z ~ 0.1; and (2) zCOSMOS-deep, a survey of approximately 10,000 galaxies selected through
color-selection criteria to have 1.4 < z < 3.0, within the central 1 deg^2. This paper describes the survey design and the
construction of the target catalogs and briefly outlines the observational program and the data pipeline. In the first
observing season, spectra of 1303 zCOSMOS-bright targets and 977 zCOSMOS-deep targets have been obtained.
These are briefly analyzed to demonstrate the characteristics that may be expected from zCOSMOS, and particularly
zCOSMOS-bright, when it is finally completed between 2008 and 2009. The power of combining spectroscopic and
photometric redshifts is demonstrated, especially in correctly identifying the emission line in single-line spectra and in
determining which of the less reliable spectroscopic redshifts are correct and which are incorrect. These techniques
bring the overall success rate in the zCOSMOS-bright so far to almost 90% and to above 97% in the 0.5 < z < 0.8
redshift range. Our zCOSMOS-deep spectra demonstrate the power of our selection techniques to isolate high-redshift
galaxies at 1.4 < z < 3.0 and of VIMOS to measure their redshifts using ultraviolet absorption lines.
1,026 citations
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California Institute of Technology1, University of Paris2, University of Hawaii3, Tohoku University4, Institut d'Astrophysique de Paris5, Space Telescope Science Institute6, Ehime University7, University of Arizona8, City University of New York9, American Museum of Natural History10, Max Planck Society11, National Radio Astronomy Observatory12, ETH Zurich13, Brera Astronomical Observatory14, Harvard University15, University of Hawaii at Manoa16, National Institutes of Natural Sciences, Japan17, University of Edinburgh18, European Southern Observatory19, University of Padua20, University of California, Los Angeles21, Columbia University22, INAF23
TL;DR: In this paper, the authors presented imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3 and 2.4 μm, including data taken on the Subaru 8.3 m telescope, the KPNO and CTIO 4 m telescopes, and the CFHT 3.6 m telescope.
Abstract: We present imaging data and photometry for the COSMOS survey in 15 photometric bands between 0.3 and 2.4 μm. These include data taken on the Subaru 8.3 m telescope, the KPNO and CTIO 4 m telescopes, and the CFHT 3.6 m telescope. Special techniques are used to ensure that the relative photometric calibration is better than 1% across the field of view. The absolute photometric accuracy from standard-star measurements is found to be 6%. The absolute calibration is corrected using galaxy spectra, providing colors accurate to 2% or better. Stellar and galaxy colors and counts agree well with the expected values. Finally, as the first step in the scientific analysis of these data we construct panchromatic number counts which confirm that both the geometry of the universe and the galaxy population are evolving.
825 citations
Authors
Showing all 242 results
Name | H-index | Papers | Citations |
---|---|---|---|
Daniele Spiga | 119 | 1145 | 70970 |
S. Bardelli | 100 | 504 | 42079 |
Fabrizio Tavecchio | 99 | 705 | 35716 |
Stefano Covino | 99 | 977 | 42669 |
Luigi Guzzo | 97 | 430 | 41498 |
A. Iovino | 94 | 423 | 37563 |
Gabriele Ghisellini | 85 | 427 | 25393 |
Gianpiero Tagliaferri | 83 | 438 | 34984 |
Christian Marinoni | 80 | 218 | 26297 |
Raffaella Margutti | 79 | 323 | 23131 |
P. Romano | 75 | 577 | 24414 |
Giuseppe Gavazzi | 71 | 237 | 15992 |
P. D'Avanzo | 71 | 474 | 20167 |
A. de Ugarte Postigo | 71 | 503 | 17853 |
C. Guidorzi | 69 | 464 | 17657 |