output
19932026
most citedThe Large Area Telescope on the Fermi Gamma-ray Space Telescope Mission

4.1k citations

Showing 2019 · astro-ph.HEShow all

26 papers · 2 filters

astro-ph.HE2019★ 17 cited

The long-term enhanced brightness of the magnetar 1E 1547.0-5408

Francesco Coti Zelati, Alice Borghese, Nanda Rea +6

We present the evolution of the X-ray emission properties of the magnetar 1E 1547.0-5408 since February 2004 over a time period covering three outbursts. We analyzed new and archiv…

astro-ph.HE2019★ 11 cited

Chasing candidate Supergiant Fast X-ray Transients in the 1,000 orbits INTEGRAL/IBIS catalog

V. Sguera, L. Sidoli, A. J. Bird +2

We report results from an investigation at hard X-rays (above 18 keV) and soft X-rays (below 10 keV) of a sample of X-ray transients located on the Galactic plane and detected with…

astro-ph.HE2019★ 4 cited

GRB 190114C in the nuclear region of an interacting galaxy -- A detailed host analysis using ALMA, HST and VLT

A. de Ugarte Postigo, C. C. Thöne, S. Martın +28

GRB 190114C is the first GRB for which the detection of very-high energy emission up to the TeV range has been reported. It is still unclear whether environmental properties might…

astro-ph.HE2019★ 10 cited

Bright gamma-ray flares observed in GRB131108A

Donggeun Tak, Z. Lucas Uhm, Bing Zhang

GRB 131108A is a bright long Gamma-Ray Burst (GRB) detected by the Large Area Telescope and the Gamma-ray Burst Monitor on board the Fermi Gamma-ray Space Telescope. Dedicated temp…

astro-ph.HE2019★ 18 cited

Optimizing neural network techniques in classifying Fermi-LAT gamma-ray sources

Miloš Kovačević, Graziano Chiaro, Sara Cutini +1

Machine learning is an automatic technique that is revolutionizing scientific research, with innovative applications and wide use in astrophysics. The aim of this study was to deve…

astro-ph.HE2019★ 38 cited

GRB171010A / SN2017htp: a GRB-SN at z=0.33

A. Melandri, D. B. Malesani, L. Izzo +41

The number of supernovae known to be connected with long-duration gamma-ray bursts is increasing and the link between these events is no longer exclusively found at low redshift ($…

astro-ph.HE2019★ 69 cited

Fermi and Swift Observations of GRB 190114C: Tracing the Evolution of High-Energy Emission from Prompt to Afterglow

M. Ajello, M. Arimoto, M. Axelsson +147

We report on the observations of gamma-ray burst (GRB) 190114C by the Fermi Gamma-ray Space Telescope and the Neil Gehrels Swift Observatory. The early-time observations reveal mul…

astro-ph.HE2019★ 10 cited

Awakening of the fast-spinning accreting Be/X-ray pulsar A0538-66

L. Ducci, S. Mereghetti, A. Santangelo

A0538-66 is a Be/X-ray binary (Be/XRB) hosting a 69 ms pulsar. It emitted bright X-ray outbursts with peak luminosity up to erg/s during the first years after its di…

astro-ph.HE2019★ 255 cited

A decade of Gamma-Ray Bursts observed by -LAT: The 2 GRB catalog

M. Axelsson, E. Bissaldi, N. Omodei +1

The Large Area Telescope (LAT) aboard the spacecraft routinely observes high-energy emission from gamma-ray bursts (GRBs). Here we present the second catalog of LAT-detecte…

astro-ph.HE2019★ 18 cited

XMM-Newton observations of PSR J0726-2612, a radio-loud XDINS

Michela Rigoselli, Sandro Mereghetti, Valery Suleimanov +4

We present the results of an XMM-Newton observation of the slowly rotating ( s), highly magnetized ( G) radio pulsar PSR J0726-2612. A previous…

astro-ph.HE2019★ 154 cited

Discovery of a 2.8 s pulsar in a 2 d orbit High-Mass X-ray Binary powering the Ultraluminous X-ray source ULX-7 in M51

G. A. Rodríguez Castillo, G. L. Israel, A. Belfiore +26

We discovered 2.8 s pulsations in the X-ray emission of the ultraluminous X-ray source (ULX) M51 ULX-7 within the UNSEeN project, which was designed to hunt for new pulsating ULXs…

astro-ph.HE2019★ 14 cited

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…

astro-ph.HE2019★ 15 cited

Supergiant Fast X-ray Transients uncovered by the EXTraS project: flares reveal the development of magnetospheric instability in accreting neutron stars

L. Sidoli, K. A. Postnov, A. Belfiore +5

The low luminosity, X-ray flaring activity, of the sub-class of high mass X-ray binaries called Supergiant Fast X-ray Transients, has been investigated using XMM-Newton public obse…

astro-ph.HE2019★ 137 cited

The afterglow and kilonova of the short GRB 160821B

E. Troja, A. J. Castro-Tirado, J. Becerra Gonzalez +22

GRB 160821B is a short duration gamma-ray burst (GRB) detected and localized by the Neil Gehrels Swift Observatory in the outskirts of a spiral galaxy at z=0.1613, at a projected p…

astro-ph.HE2019★ 2 cited

Follow-up observations of X-ray emitting hot subdwarf stars: the compact He-poor sdO star Feige 34

N. La Palombara, S. Mereghetti, P. Esposito +1

We report on results obtained with the XMM-Newton observation of Feige 34 carried out in April 2018. This is the first spectroscopic X-ray observation of a compact and helium-poor…

astro-ph.HE2019★ 13 cited

Long X-ray flares from the central source in RCW 103

P. Esposito, A. De Luca, R. Turolla +7

We observed the slowly revolving pulsar 1E 161348-5055 (1E 1613, spin period of 6.67 h) in the supernova remnant RCW 103 twice with XMM-Newton and once with the Very Large Telescop…

astro-ph.HE2019★ 11 cited

The nature of the infrared counterpart and of the optical nebula associated with the Central Compact Object in Vela Jr.\

R. P. Mignani, A. De Luca, S. Zharikov +3

The X-ray source CXO\, J085201.4461753in the few kyr-old Vela Jr. supernova remnant (G266.2-1.2) belongs to the peculiar class of isolated neutron stars dubbed "Central Compact…

astro-ph.HE2019★ 8 cited

X-ray absorbing column densities of a complete sample of short Gamma Ray Bursts

L. Asquini, S. Campana, P. D'Avanzo +11

We update a flux-limited complete sample of Swift-based SGRBs (SBAT4, D'Avanzo et al. 2014), bringing it to 25 events and doubling its previous redshift range. We then evaluate the…

astro-ph.HE2019★ 10 cited

Exploring the role of X-ray reprocessing and irradiation in the anomalous bright optical outbursts of A0538-66

L. Ducci, S. Mereghetti, K. Hryniewicz +2

In 1981, the Be/X-ray binary (Be/XRB) A0538-66 showed outbursts characterized by high peak luminosities in the X-ray and optical bands. The optical outbursts were qualitatively exp…

astro-ph.HE2019★ 1.4k cited

Fermi Large Area Telescope Fourth Source Catalog

LAT collaboration

We present the fourth Fermi Large Area Telescope catalog (4FGL) of gamma-ray sources. Based on the first eight years of science data from the Fermi Gamma-ray Space Telescope missio…

astro-ph.HE2019★ 46 cited

GRB 190114C: from prompt to afterglow?

M. E. Ravasio, G. Oganesyan, O. S. Salafia +6

GRB 190114C is the first gamma-ray burst detected at Very High Energies (VHE, i.e. >300 GeV) by the MAGIC Cherenkov telescope. The analysis of the emission detected by the Fermi sa…

astro-ph.HE2019★ 117 cited

Optical spectroscopy and demographics of redback millisecond pulsar binaries

Jay Strader, Samuel J. Swihart, Laura Chomiuk +12

We present the first optical spectroscopy of five confirmed (or strong candidate) redback millisecond pulsar binaries, obtaining complete radial velocity curves for each companion…

astro-ph.HE2019★ 10 cited

MAGIC and Fermi-LAT gamma-ray results on unassociated HAWC sources

M. L. Ahnen, S. Ansoldi, L. A. Antonelli +336

The HAWC Collaboration released the 2HWC catalog of TeV sources, in which 19 show no association with any known high-energy (HE; E > 10 GeV) or very-high-energy (VHE; E > 300 GeV)…

astro-ph.HE2019★ 13 cited

The multi-outburst activity of the magnetar in Westerlund I

A. Borghese, N. Rea, R. Turolla +17

After two major outbursts in 2006 and 2011, on 2017 May 16 the magnetar CXOU J164710.2-455216, hosted within the massive star cluster Westerlund I, emitted a short (20 ms) burst, w…