中文
相关论文

相关论文: Sharper Fermi LAT Images: instrument response func…

200 篇论文

We have used measurements by the Fermi Large Area Telescope (LAT) to study the interstellar gamma-ray emission in a region of the second Galactic quadrant, at 100 deg < l < 145 deg and -15 deg < b < 30 deg. This region encompasses the…

高能天体物理现象 · 物理学 2019-08-13 L. Tibaldo , I. A. Grenier

The spatial extension of a gamma-ray source is an essential ingredient to determine its spectral properties as well as its potential multi-wavelength counterpart. The capability to spatially resolve gamma-ray sources is greatly improved by…

高能天体物理现象 · 物理学 2018-04-12 The Fermi LAT Collaboration , M. Ackermann , M. Ajello , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , R. Bellazzini , E. Bissaldi , E. D. Bloom , R. Bonino , E. Bottacini , T. J. Brandt , J. Bregeon , P. Bruel , R. Buehler , R. A. Cameron , M. Caragiulo , P. A. Caraveo , D. Castro , E. Cavazzuti , C. Cecchi , E. Charles , A. Chekhtman , C. C. Cheung , G. Chiaro , S. Ciprini , J. M. Cohen , D. Costantin , F. Costanza , S. Cutini , F. D'Ammando , F. de Palma , R. Desiante , S. W. Digel , N. Di Lalla , M. Di Mauro , L. Di Venere , C. Favuzzi , S. J. Fegan , E. C. Ferrara , A. Franckowiak , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , D. Gasparrini , N. Giglietto , F. Giordano , M. Giroletti , D. Green , I. A. Grenier , M. -H. Grondin , L. Guillemot , S. Guiriec , A. K. Harding , E. Hays , J. W. Hewitt , D. Horan , X. Hou , G. Jóhannesson , T. Kamae , M. Kuss , G. La Mura , S. Larsson , M. Lemoine-Goumard , J. Li , F. Longo , F. Loparco , P. Lubrano , J. D. Magill , S. Maldera , D. Malyshev , A. Manfreda , M. N. Mazziotta , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , M. Negro , E. Nuss , T. Ohsugi , N. Omodei , M. Orienti , E. Orlando , J. F. Ormes , V. S. Paliya , D. Paneque , J. S. Perkins , M. Persic , M. Pesce-Rollins , V. Petrosian , F. Piron , T. A. Porter , G. Principe , S. Raino , R. Rando , M. Razzano , S. Razzaque , A. Reimer , O. Reimer , T. Reposeur , C. Sgro , D. Simone , E. J. Siskind , F. Spada , G. Spandre , P. Spinelli , D. J. Suson , D. Tak , J. B. Thayer , D. J. Thompson , D. F. Torres , G. Tosti , E. Troja , G. Vianello , K. S. Wood , M. Wood

Large-scale astronomical surveys can capture numerous images of celestial objects, including galaxies and nebulae. Analysing and processing these images can reveal intricate internal structures of these objects, allowing researchers to…

天体物理仪器与方法 · 物理学 2023-11-02 Peng Jia , Jiameng Lv , Runyu Ning , Yu Song , Nan Li , Kaifan Ji , Chenzhou Cui , Shanshan Li

Fermi-LAT >30 MeV observations have increased the number of detected solar flares by almost a factor of 10 with respect to previous space observations. These sample both the impulsive and long duration phases of GOES M and X class flares.…

太阳与恒星天体物理 · 物理学 2019-08-14 Melissa Pesce-Rollins , Nicola Omodei , Vahe' Petrosian , Wei Liu , Fatima Rubio da Costa , Alice Allafort

We perform a comprehensive stacking analysis of data collected by the Fermi Large Area Telescope (LAT) of gamma-ray bursts (GRB) localized by the Swift spacecraft, which were not detected by the LAT but which fell within the instrument's…

高能天体物理现象 · 物理学 2016-05-10 LAT Collaboration

This work explores whether hadronic processes could be responsible for the high-energy emission seen in quasars identified by the Large Area Telescope (LAT) instrument aboard the Fermi satellite. In contrast to purely leptonic models, this…

We implemented a novel technique to perform the collective spectral analysis of sets of multiple gamma-ray point sources using the data collected by the Large Area Telescope onboard the Fermi satellite. The energy spectra of the sources are…

天体物理仪器与方法 · 物理学 2012-08-02 M. N. Mazziotta , F. Loparco , F. de Palma , N. Giglietto

Since the spring of 2012 there have been many papers published using Fermi LAT public data that claim evidence for narrow spectral lines coming from the region of the Galactic center. This study uses non-Galactic center Fermi-LAT data from…

高能天体物理现象 · 物理学 2013-03-21 E. Bloom , E. Charles , E. Izaguirre , A. Snyder , A. Albert , B. Winer , Z. Yang , R. Essig

We study the broad emission line blazars detected in the gamma-ray band by the Large Area Telescope onboard the Fermi satellite and with the optical spectrum studied by Shaw et al. (2012, 2013). The observed broad line strength provides a…

高能天体物理现象 · 物理学 2015-06-23 G. Ghisellini , F. Tavecchio

Gamma-ray Bursts (GRB) were discovered by satellite-based detectors as powerful sources of transient $\gamma$-ray emission. The Fermi satellite detected an increasing number of these events with its dedicated Gamma-ray Burst Monitor (GBM),…

天体物理仪器与方法 · 物理学 2021-09-29 G. La Mura , U. Barres de Almeida , R. Conceição , A. De Angelis , F. Longo , M. Pimenta , E. Prandini , E. Ruiz-Velasco , B. Tomé

Since its launch in 2008 June, the Fermi Gamma-ray Space Telescope has opened a new era in high-energy astrophysics. The unprecedented sensitivity, angular resolution and effective area of the Large Area Telescope on board Fermi, together…

高能天体物理现象 · 物理学 2019-08-13 F. D'Ammando

We present precise phase-connected pulse timing solutions for 16 gamma-ray-selected pulsars recently discovered using the Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope plus one very faint radio pulsar (PSR J1124-5916)…

Launched on the 11th of June 2008, the Fermi Large Area Telescope (LAT) has made several outstanding scientific contributions to the high energy astrophysics community. One of these contributions was the high statistics measurement of the…

高能天体物理现象 · 物理学 2019-08-14 Melissa Pesce-Rollins

We present a new method to interpret the $\gamma$-ray data of our inner Galaxy as measured by the Fermi Large Area Telescope (Fermi LAT). We train and test convolutional neural networks with simulated Fermi-LAT images based on models tuned…

高能天体物理现象 · 物理学 2018-05-29 Sascha Caron , Germán A. Gómez-Vargas , Luc Hendriks , Roberto Ruiz de Austri

Gamma-ray emission provides constraints on the non-thermal radiation processes at play in astrophysical particle accelerators. This allows both the nature of accelerated particles and the maximum energy that they can reach to be determined.…

高能天体物理现象 · 物理学 2023-11-06 Pauline Chambery , Marianne Lemoine-Goumard , Armelle Jardin-Blicq , Atreyee Sinha , J. Eagle

The Fermi-LAT collaboration recently confirmed a discrepancy between the observed longitudinal profile of gamma-ray diffuse emission from the Galaxy and that computed with numerical codes assuming that Cosmic Rays (CRs) are produced by…

高能天体物理现象 · 物理学 2013-07-01 Daniele Gaggero , Carmelo Evoli , Dario Grasso , Luca Maccione

The nature of dark matter is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments. Among indirect search techniques, which look for stable products from the…

The Fermi observatory, with its Gamma-Ray Bursts monitor (GBM) and Large Area Telescope (LAT), is observing Gamma-ray Bursts with unprecedented spectral coverage and sensitivity, from ~10 keV to > 300 GeV. In the first 3 years of the…

高能天体物理现象 · 物理学 2013-05-27 Giacomo Vianello

The Fermi Gamma-ray Burst Monitor (GBM) is currently the most prolific detector of Gamma-Ray Bursts (GRBs). Recently the detection rate of short GRBs (SGRBs) has been dramatically increased through the use of ground-based searches that…

We present a multi-wavelength study of the FSRQ CTA 102 using Fermi-LAT and simultaneous Swift-XRT/UVOT observations. The Fermi-LAT telescope detected one of the brightest flares from this object during Sep, 2016 to Mar, 2017. In the 190…

高能天体物理现象 · 物理学 2018-10-17 Raj Prince , Gayathri Raman , Joachim Hahn , Nayantara Gupta , Pratik Majumdar