PKS 0537-286, carrying the information of the environment of SMBHs in the early Universe (2009)
Bottacini, E., Ajello, M., Greiner, J., Pian, E., Rau, A., Palazzi, E., ...
We present the results of a multifrequency campaign on the high-redshift (z = 3.1) blazar PKS 0537-286. The source was observed at different epochs from 2006 to 2008 with INTEGRAL and Swift, and...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter) showed remarkable emission-line and continuum properties and strong emission-line variability first reported in 2008 (Paper I). The...
Abdo, A. A., Ackermann, M., Ajello, M., Axelsson, M., Baldini, L., Ballet, J., ...
We report the discovery by the Large Area Telescope (LAT) onboard the Fermi Gamma-Ray Space Telescope of high-energy γ-ray emission from the peculiar quasar PMN J0948+0022 (z = 0.5846). The optical...
The evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
We use three years of data from the Swift/Burst Alert Telescope (BAT) survey to select a complete sample of X-ray blazars above 15 keV. This sample comprises 26 flat-spectrum radio quasars (FSRQs)...
Fermi Discovery of Gamma-Ray Emission from Ngc 1275 (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Asano, K., Baldini, L., Ballet, J., ...
The Evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
We use 3 years of data from the Swift/BAT survey to select a complete sample of X-ray blazars above 15 keV. This sample comprises 26 Flat-Spectrum Radio Quasars (FSRQs) and 12 BL Lac objects detected...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Krühler, T., Von-Kienlin, A., Rau, A., Sari, R., ...
Context. The detection of GeV photons from gamma-ray bursts (GRBs) has important consequences for the interpretation and modelling of these most-energetic cosmological explosions. The full...
The 22-Month Swift-BAT All-Sky Hard X-ray Survey (2009)
Tueller, J., Baumgartner, W. H., Markwardt, C. B., Skinner, G. K., Mushotzky, R. F., Ajello, M., ...
We present the catalog of sources detected in the first 22 months of data from the hard X-ray survey (14--195 keV) conducted with the BAT coded mask imager on the \swift satellite. The catalog...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
The galaxy SDSSJ0952+2143 showed remarkable emission-line properties first reported in 2008 (paper I), which are the consequence of a powerful high-energy flare. Here we report follow-up observations...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Kruehler, T., Kienlin, A. V., Rau, A., Sari, R., ...
The detection of GeV photons from gamma-ray bursts (GRBs) has important consequences for the interpretation and modelling of these most-energetic cosmological explosions. The full exploitation of the...
A candidate tidal disruption event in the Galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
Context. Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of supermassive black holes in the...
A candidate tidal disruption event in the Galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of super massive black holes in the centers of...
Gamma-ray burst investigation via polarimetry and spectroscopy (GRIPS) (2009)
Greiner, J., Iyudin, A., Kanbach, G., Zoglauer, A., Diehl, R., Ryde, F., ...
A candidate tidal disruption event in the galaxy cluster Abell 3571 (2009)
Cappelluti, N., Ajello, M., Rebusco, P., Komossa, S., Bongiorno, A., Clemens, C., ...
A strong optical flare before the rising afterglow of GRB 080129 (2009)
Greiner, J., Krühler, T., McBreen, S., Ajello, M., Giannios, D., Schwarz, R., ...
The redshift and afterglow of the extremely energetic gamma-ray burst GRB 080916C (2009)
Greiner, J., Clemens, C., Krühler, T., Von Kienlin, A., Rau, A., Sari, R., ...
Early Fermi gamma-ray space telescope observations of the quasar 3C 454.3 (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., ...
The evolution of Swift/BAT blazars and the origin of the MeV background (2009)
Ajello, M., Costamante, L., Sambruna, R. M., Gehrels, N., Chiang, J., Rau, A., ...
Fermi discovery of gamma-ray emission from NGC 1275 (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Asano, K., Baldini, L., Ballet, J., ...
Fermi/large area telescope bright gamma-ray source list (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., ...
Pulsed gamma-rays from PSR J2021+3651 with the Fermi large area telescope (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Baldini, L., Ballet, J., ...
Komossa, S., Zhou, H., Rau, A., Dopita, M., Gal-Yam, A., Greiner, J., ...
A population of gamma-ray millisecond pulsars seen with the Fermi large area telescope (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., ...
Detection of high-energy gamma-ray emission from the globular cluster 47 Tucanae with Fermi (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Atwood, W. B., Axelsson, M., Baldini, L., ...
Detection of 16 gamma-ray pulsars through blind frequency searches using the Fermi LAT (2009)
Abdo, A. A., Ackermann, M., Ajello, M., Anderson, B., Atwood, W. B., Axelsson, M., ...
A strong optical flare before the rising afterglow of GRB 080129 (2008)
Greiner, J., Krühler, T., McBreen, S., Ajello, M., Giannos, D., Schwarz, R., ...
We report on GROND observations of a 40 sec duration (rest-frame) optical flare from GRB 080129 at redshift 4.349. The rise- and decay time follow a power law with indices +12 and -8, respectively,...
A new measurement of the cosmic X-ray background (2008)
Moretti, A., Pagani, C., Cusumano, G., Campana, S., Perri, M., Abbey, A., ...
We present a new measurement of the cosmic X-ray background (CXRB) in the 1.5-7 keV energy band, performed by exploiting the Swift X-ray telescope (XRT) data archive. We also present a CXRB spectral...
The 2007 outburst of the X-ray binary XTE J1856+053 (2008)
Sala, G., Greiner, J., Ajello, M., Primak, N.
On 28 February 2007 a new outburst of the previously known transient source XTE J1856+053 was detected with RXTE/ASM. We present here the results of an XMM-Newton (0.5-10.0 keV) Target of Opportunity...
Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM (2008)
Ajello, M., Rebusco, P., Cappelluti, N., Reimer, O., Boehringer, H., Greiner, J., ...
We report about the detection of 10 clusters of galaxies in the ongoing Swift/BAT all-sky survey. This sample, which comprises mostly merging clusters, was serendipitously detected in the 15--55 keV...
Cosmic X-ray background and Earth albedo Spectra with Swift/BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
We use Swift/BAT Earth occultation data at different geomagnetic latitudes to derive a sensitive measurement of the Cosmic X-ray background (CXB) and of the Earth albedo emission in the 15--200 keV...
A survey for fast transients in the Fornax Cluster of galaxies (2008)
Rau, A., Ofek, E. O., Kulkarni, S. R., Madore, B. F., Pevunova, O., Ajello, M.
The luminosity gap between novae (M_R ≤ − 10) and supernovae (M_R ≥ − 14) has been well known since the pioneering research of Zwicky and Hubble. Nearby galaxy clusters and concentrations...
Lichti, G. G., Bottacini, E., Ajello, M., Charlot, P., Collmar, W., Falcone, A., ...
We report the results of a multi-wavelength campaign on the blazar Mrk 421 during outburst. We observed four strong flares at X-ray energies that were not seen at other wavelengths (partially because...
BAT X-Ray Survey. I. Methodology and X-Ray Identification (2008)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
We applied the maximum likelihood (ML) method, as an image reconstruction algorithm, to the BAT X-Ray Survey (BXS). This method was specifically designed to preserve the full statistical information...
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
We report the discovery of superstrong, fading, high-ionization iron line emission in the galaxy SDSS J095209.56+214313.3 (SDSS J0952+2143 hereafter), which must have been caused by an X-ray outburst...
A Survey for Fast Transients in the Fornax Cluster of Galaxies (2008)
Rau, A., Ofek, E. O., Kulkarni, S. R., Madore, B. F., Pevunova, O., Ajello, M.
The luminosity gap between novae (M_R < -10) and supernovae (M_R > -14) is well known since the pioneering research of Zwicky and Hubble. Nearby galaxy clusters and concentrations offer an excellent...
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
We report the discovery of superstrong, fading, high-ionization iron line emission in the galaxy SDSSJ095209.56+214313.3 (SDSSJ0952+2143 hereafter), which must have been caused by an X-ray outburst...
The Swift BAT X-Ray survey. III. X-Ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
In this concluding part of the series of three papers dedicated to the Swift BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample....
The Swift BAT X-ray survey - III. X-ray spectra and statistical properties (2008)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
BAT X-ray survey - I. Methodology and X-ray identification (2008)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
Komossa, S., Zhou, H., Wang, T., Ajello, M., Ge, J., Greiner, J., ...
A survey for fast transients in the Fornax cluster of galaxies (2008)
Rau, A., Ofek, E. O., Kulkarni, S. R., Madore, B. F., Pevunova, O., Ajello, M.
Cosmic X-ray background and earth Albedo spectra with Swift BAT (2008)
Ajello, M., Greiner, J., Sato, G., Willis, D. R., Kanbach, G., Strong, A. W., ...
BAT X-ray Survey - I: Methodology and X-ray Identification (2007)
Ajello, M., Greiner, J., Kanbach, G., Rau, A., Strong, A. W., Kennea, J. A.
We applied the Maximum Likelihood method, as an image reconstruction algorithm, to the BAT X-ray Survey (BXS). This method was specifically designed to preserve the full statistical information in...
BAT X-ray Survey - III: X-ray Spectra and Statistical Properties (2007)
Ajello, M., Rau, A., Greiner, J., Kanbach, G., Salvato, M., Strong, A. W., ...
In this concluding part of the series of three papers dedicated to the Swift/BAT hard X-ray survey (BXS), we focus on the X-ray spectral analysis and statistical properties of the source sample....
XMM-Newton and INTEGRAL observations of the black hole candidate XTE J1817-330 (2007)
Sala, G., Greiner, J., Ajello, M., Bottacini, E., Haberl, F.
Blazar 1ES 1959+650 shows high and hard X-ray state (2007)
Bottacini, E., Beckmann, V., Ishibashi, W., Ajello, M., Greiner, J.
Swift and INTEGRAL observation of 1ES 1959+650 (2007)
Beckmann, V., Ishibashi, W., Bottacini, E., Ajello, M., Greiner, J.
The MEGA project for medium energy gamma-ray astronomy (2006)
Bloser, P. F., Ryan, J. M., McConnell, M. L., Macri, J. R., Bravar, U., Kanbach, G., ...
SWIFT/BAT detections of hard X-ray sources: IV (2006)
Ajello, M., Greiner, J., Rau, A., Barthelmy, S., Kennea, J. A., Falcone, A., ...
INTEGRAL observation of flaring activity of Mrk 421 (2006)
Lichti, G. G., Paltani, S., Mowlavi, M., Ajello, M., Collmar, W., Von Kienlin, A., ...
High state of Mkn 421 in the hard X-rays (2006)
Lichti, G. G., Neronov, A., Mowlavi, M., Ajello, M., Beckmann, V., Boisson, C., ...
Swift observations of Swift J0911.2+4533 (2006)
Grupe, D., Tueller, J., Markwardt, C., Kennea, J. A., Falcone, A., Mushotzky, R., ...
Development and calibration of the tracking Compton/Pair telescope MEGA (2005)
Kanbach, G., Andritschke, R., Zoglauer, A., Ajello, M., McConnell, M. L., Macri, J. R., ...