Publications (36)
XMM-Newton observations of the supergiant fast X-ray transients XTEJ1739-302, IGRJ08408-4503 and IGRJ18410-0535
E. Bozzo, C. Ferrigno, J. C. Leyder +5
We report here on the XMM-Newton observations of the three supergiant fast X-ray transients (SFXT) XTE J1739-302, IGRJ08408-4503, and IGRJ18410-0535. For the latter source we only…
X-Ray Eclipse Time Delays in 4U2129+47
E. Bozzo, M. Falanga, A. Papitto +8
4U 2129+47 was discovered in the early 80's and classified as an accretion disk corona source due to its broad and partial X-ray eclipses. The 5.24 hr binary orbital period was inf…
Detailed X-ray spectroscopy of the magnetar 1E 2259+586
D. Pizzocaro, A. Tiengo, S. Mereghetti +7
Magnetic field geometry is expected to play a fundamental role in magnetar activity. The discovery of a phase-variable absorption feature in the X-ray spectrum of SGR 0418+5729, in…
Discovery of the Onset of Rapid Accretion by a Dormant Massive Black Hole
D. N. Burrows, J. A. Kennea, G. Ghisellini +53
Massive black holes are believed to reside at the centres of most galaxies. They can be- come detectable by accretion of matter, either continuously from a large gas reservoir or i…
GRAWITA: VLT Survey Telescope observations of the gravitational wave sources GW150914 and GW151226
E. Brocato, M. Branchesi, E. Cappellaro +49
We report the results of deep optical follow-up surveys of the first two gravitational-wave sources, GW150914 and GW151226, done by the GRAvitational Wave Inaf TeAm Collaboration (…
XMM-Newton and Swift observations of XTE J1743-363
E. Bozzo, P. Romano, C. Ferrigno +5
XTEJ1743-363 is a poorly known hard X-ray transient, that displays short and intense flares similar to those observed from Supergiant Fast X-ray Transients. The probable optical co…
The supergiant fast X-ray transient IGRJ18483-0311 in quiescence: XMM-Newton, Swift, and Chandra observations
A. Giunta, E. Bozzo, F. Bernardini +7
IGR J18483-0311 was discovered with INTEGRAL in 2003 and later classified as a supergiant fast X-ray transient. It was observed in outburst many times, but its quiescent state is s…
V39: an unusual object in the field of IC 1613
L. Mantegazza, E. Antonello, D. Fugazza +2
The variable star V39 in the field of IC 1613 is discussed in the light of the available photometric and new spectroscopic data. It has strong emission Balmer lines, and the observ…
The first X-ray eclipse of IGRJ16479-4514?
E. Bozzo, L. Stella, G. Israel +2
We report on the first long (~32 ks) pointed XMM-Newton observation of the supergiant fast X-ray transient IGRJ16479-4514. Results from the timing, spectral and spatial analysis of…
XMM-Newton observations of IGRJ18410-0535: The ingestion of a clump by a supergiant fast X-ray transient
E. Bozzo, A. Giunta, G. Cusumano +6
IGRJ18410-0535 is a supergiant fast X-ray transients. This subclass of supergiant X-ray binaries typically undergoes few- hour-long outbursts reaching luminosities of 10^(36)-10^(3…
The weak INTEGRAL bursts GRB040223 and GRB040624: an emerging population of dark afterglows
P. Filliatre, S. Covino, P. D'Avanzo +18
We report here gamma-ray, X-ray and near-infrared observations of GRB040223 along with gamma-ray and optical observations of GRB040624. GRB040223 was detected by INTEGRAL close to…
Magnetar-like X-ray bursts suppress pulsar radio emission
R. F. Archibald, M. Burgay, M. Lyutikov +9
Rotation-powered pulsars and magnetars are two different observational manifestations of neutron stars: rotation powered pulsars are rapidly spinning objects that are mostly observ…
Dissecting accretion and outflows in accreting white dwarf binaries
D. de Martino, G. Sala, S. Balman +22
This is a White Paper in support of the mission concept of the Large Observatory for X-ray Timing (LOFT), proposed as a medium-sized ESA mission. We discuss the potential of LOFT f…
The Large Observatory For x-ray Timing
M. Feroci, J. W. den Herder, E. Bozzo +341
The Large Observatory For x-ray Timing (LOFT) was studied within ESA M3 Cosmic Vision framework and participated in the final down-selection for a launch slot in 2022-2024. Thanks…
IGRJ16479-4514: the first eclipsing supergiant fast X-ray transient?
E. Bozzo, L. Stella, G. Israel +2
Supergiant fast X-ray transients are a new class of high mass X-ray binaries recently discovered with INTEGRAL. Hours long outbursts from these sources have been observed on numero…
Paving the way to simultaneous multi-wavelength astronomy
M. J. Middleton, P. Casella, P. Gandhi +49
Whilst astronomy as a science is historically founded on observations at optical wavelengths, studying the Universe in other bands has yielded remarkable discoveries, from pulsars…
Phase resolved spectroscopy of the accreting millisecond X-ray pulsar SAX J1808.4-3658 during the 2008 outburst
R. Cornelisse, P. D'Avanzo, T. Munoz-Darias +6
aims: We obtained phase-resolved spectroscopy of the accreting millisecond X-ray pulsar SAX J1808.4-3658 during its outburst in 2008 to find a signature of the donor star, constrai…
Broad-band characteristics of seven new hard X-ray selected cataclysmic variables
F. Bernardini, D. de Martino, K. Mukai +5
We present timing and spectral analysis of a sample of seven hard X-ray selected Cataclysmic Variable candidates based on simultaneous X-ray and optical observations collected with…
Peculiar Spin Frequency and Radio Profile Evolution of PSR J11196127 Following Magnetar-like X-ray Bursts
S. Dai, S. Johnston, P. Weltevrede +7
We present the spin frequency and profile evolution of the radio pulsar J11196127 following magnetar-like X-ray bursts from the system in 2016 July. Using data from the Parkes r…
Chandra Smells a RRAT: X-ray Detection of a Rotating Radio Transient
B. M. Gaensler, M. McLaughlin, S. Reynolds +10
"Rotating RAdio Transients" (RRATs) are a newly discovered astronomical phenomenon, characterised by occasional brief radio bursts, with average intervals between bursts ranging fr…
UVES/VLT high resolution spectroscopy of GRB 050730 afterglow: probing the features of the GRB environment
V. D'Elia, F. Fiore, E. Meurs +44
We analyze high resolution spectroscopic observations of the optical afterglow of GRB050730, obtained with UVES@VLT about hours after the GRB trigger. The spectrum shows that the I…
Discovery of the X-ray Counterpart to the Rotating Radio Transient J1819--1458
S. P. Reynolds, K. J. Borkowski, B. M. Gaensler +10
We present the discovery of the first X-ray counterpart to a Rotating RAdio Transient (RRAT) source. RRAT J1819--1458 is a relatively highly magnetized (B G)…
Swift observations of IGRJ16479-4514 in outburst
E. Bozzo, A. Giunta, L. Stella +3
The supergiant fast X-ray transient source IGR J16479-4514 was observed in outburst two times with Swift. Its quiescent state was investigated in-depth only once in 2008 through a…
The nature of the X-ray transient MAXI J0556-332
R. Cornelisse, P. D'Avanzo, S. Campana +8
Phase-resolved spectroscopy of the newly discovered X-ray transient MAXI J0556-332 has revealed the presence of narrow emission lines in the Bowen region that most likely arise on…
The supergiant fast X-ray transients XTE J1739-302 and IGR J08408-4503 in quiescence with XMM-Newton
E. Bozzo, L. Stella, C. Ferrigno +5
Context. Supergiant fast X-ray transients are a subclass of high mass X-ray binaries that host a neutron star accreting mass from the wind of its OB supergiant companion. They are…
Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
E. Pian, P. D'Avanzo, S. Benetti +81
The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of gamma-rays, a gravitational wave signal, and a transient optical/nea…
A flash in the dark: UVES/VLT high resolution spectroscopy of GRB afterglows
F. Fiore, V. D'Elia, D. Lazzati +17
We present the first high resolution (R=20000--45000, corresponding to 14 km/s at 4200A to 6.6 km/s at 9000A) observations of the optical afterglow of Gamma Ray Bursts. GRB020813 a…
Discovery of periodic dips in the brightest hard X-ray source of M31 with EXTraS
M. Marelli, A. Tiengo, A. De Luca +9
We performed a search for eclipsing and dipping sources in the archive of the EXTraS project - a systematic characterization of the temporal behaviour of XMM-Newton point sources.…
SGR1806-20: evidence for a superstrong Magnetic Field from Quasi Periodic Oscillations
M. Vietri, L. Stella, G. Israel
Fast Quasi-Periodic Oscillations (QPOs, frequencies of Hz) have been recently discovered in the ringing tail of giant flares from Soft Gamma Repeaters (SGRs), when…
X-ray/optical observations of A0535+26/HDE 245770 in quiescence
M. Orlandini, C. Bartolini, S. Campana +10
We present the result of three BeppoSAX observations of the X-ray binary pulsar A0535+26 in its quiescent state. The source is quite well detected up to 200 keV (6 sigma detection…
On the nature of the intermittent pulsar PSR B1931+24
N. Rea, M. Kramer, L. Stella +7
PSR B1931+24 is the first intermittent radio pulsar discovered to date, characterized by a 0.8 s pulsation which turns on and off quasi-periodically every ~35 days, with a duty cyc…
Giant outburst from the supergiant fast X-ray transient IGR J17544-2619: accretion from a transient disc?
P. Romano, E. Bozzo, V. Mangano +7
Supergiant fast X-ray transients (SFXTs) are high mass X-ray binaries associated with OB supergiant companions and characterised by an X-ray flaring behaviour whose dynamical range…
The THESEUS space mission concept: science case, design and expected performances
L. Amati, P. O'Brien, D. Goetz +208
THESEUS is a space mission concept aimed at exploiting Gamma-Ray Bursts for investigating the early Universe and at providing a substantial advancement of multi-messenger and time-…
A new Ultraluminous X-ray source in the galaxy NGC 5907
F. Pintore, A. Belfiore, G. Novara +14
We report on the serendipitous discovery of a new transient in NGC 5907, at a peak luminosity of 6.4x10^{39} erg/s. The source was undetected in previous 2012 Chandra observations…
Swift J0525.6+2416 and IGR J04571+4527: two new hard X-ray selected magnetic cataclysmic variables identified with XMM-Newton
F. Bernardini, D. de Martino, K. Mukai +4
IGR J04571+4527 and Swift J0525.6+2416 are two hard X-ray sources detected in the Swift/BAT and INTEGRAL/IBIS surveys. They were proposed to be magnetic cataclysmic variables of th…
Extended X-ray emission around RRAT J1819-1458
A. Camero-Arranz, N. Rea, M. A. McLaughlin +9
We present new imaging and spectral analysis of the recently discovered extended X-ray emission around the high-magnetic-field rotating radio transient RRAT J1819-1458. We used two…