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Constraining the Cosmic-ray Energy Based on Observations of Nearby Galaxy Clusters by LHAASO

Galaxy clusters act as reservoirs of high-energy cosmic rays (CRs). As CRs propagate through the intracluster medium, they generate diffuse $\gamma$-rays detectable by arrays such as LHAASO. These $\gamma$-rays result from proton-proton…

High Energy Astrophysical Phenomena · Physics 2026-01-07 The LHAASO Collaboration , Zhen Cao , F. Aharonian , Y. X. Bai , Y. W. Bao , D. Bastieri , X. J. Bi , Y. J. Bi , W. Bian , J. Blunier , A. V. Bukevich , C. M. Cai , Y. Y. Cai , W. Y. Cao , Zhe Cao , J. Chang , J. F. Chang , E. S. Chen , G. H. Chen , H. K. Chen , L. F. Chen , Liang Chen , Long Chen , M. J. Chen , M. L. Chen , Q. H. Chen , S. Chen , S. H. Chen , S. Z. Chen , T. L. Chen , X. B. Chen , X. J. Chen , X. P. Chen , Y. Chen , N. Cheng , Q. Y. Cheng , Y. D. Cheng , M. Y. Cui , S. W. Cui , X. H. Cui , Y. D. Cui , B. Z. Dai , H. L. Dai , Z. G. Dai , Danzengluobu , Y. X. Diao , A. J. Dong , X. Q. Dong , K. K. Duan , J. H. Fan , Y. Z. Fan , J. Fang , J. H. Fang , K. Fang , C. F. Feng , H. Feng , L. Feng , S. H. Feng , X. T. Feng , Y. Feng , Y. L. Feng , S. Gabici , B. Gao , Q. Gao , W. Gao , W. K. Gao , M. M. Ge , T. T. Ge , L. S. Geng , G. Giacinti , G. H. Gong , Q. B. Gou , M. H. Gu , F. L. Guo , J. Guo , K. J. Guo , X. L. Guo , Y. Q. Guo , Y. Y. Guo , R. P. Han , O. A. Hannuksela , M. Hasan , H. H. He , H. N. He , J. Y. He , X. Y. He , Y. He , S. Hernández-Cadena , B. W. Hou , C. Hou , X. Hou , H. B. Hu , S. C. Hu , C. Huang , D. H. Huang , J. J. Huang , X. L. Huang , X. T. Huang , X. Y. Huang , Y. Huang , Y. Y. Huang , A. Inventar , X. L. Ji , H. Y. Jia , K. Jia , H. B. Jiang , K. Jiang , X. W. Jiang , Z. J. Jiang , M. Jin , S. Kaci , M. M. Kang , I. Karpikov , D. Khangulyan , D. Kuleshov , K. Kurinov , Cheng Li , Cong Li , D. Li , F. Li , H. B. Li , H. C. Li , Jian Li , Jie Li , K. Li , L. Li , R. L. Li , S. D. Li , T. Y. Li , W. L. Li , X. R. Li , Xin Li , Y. Li , Zhe Li , Zhuo Li , E. W. Liang , Y. F. Liang , S. J. Lin , B. Liu , C. Liu , D. Liu , D. B. Liu , H. Liu , J. Liu , J. L. Liu , J. R. Liu , M. Y. Liu , R. Y. Liu , S. M. Liu , W. Liu , X. Liu , Y. Liu , Y. Liu , Y. N. Liu , Y. Q. Lou , Q. Luo , Y. Luo , H. K. Lv , B. Q. Ma , L. L. Ma , X. H. Ma , I. O. Maliy , J. R. Mao , Z. Min , W. Mitthumsiri , Y. Mizuno , G. B. Mou , A. Neronov , K. C. Y. Ng , M. Y. Ni , L. Nie , L. J. Ou , Z. W. Ou , P. Pattarakijwanich , Z. Y. Pei , D. Y. Peng , J. C. Qi , M. Y. Qi , J. J. Qin , D. Qu , A. Raza , C. Y. Ren , D. Ruffolo , A. Sáiz , D. Savchenko , D. Semikoz , L. Shao , O. Shchegolev , Y. Z. Shen , X. D. Sheng , Z. D. Shi , F. W. Shu , H. C. Song , Yu. V. Stenkin , V. Stepanov , Y. Su , D. X. Sun , H. Sun , J. X. Sun , Q. N. Sun , X. N. Sun , Z. B. Sun , N. H. Tabasam , J. Takata , P. H. T. Tam , H. B. Tan , Q. W. Tang , R. Tang , Z. B. Tang , W. W. Tian , C. N. Tong , L. H. Wan , C. Wang , D. H. Wang , G. W. Wang , H. G. Wang , J. C. Wang , K. Wang , Kai Wang , Kai Wang , L. P. Wang , L. Y. Wang , L. Y. Wang , R. Wang , W. Wang , X. G. Wang , X. J. Wang , X. Y. Wang , Y. Wang , Y. D. Wang , Z. H. Wang , Z. X. Wang , Zheng Wang , D. M. Wei , J. J. Wei , Y. J. Wei , T. Wen , S. S. Weng , C. Y. Wu , H. R. Wu , Q. W. Wu , S. Wu , X. F. Wu , Y. S. Wu , S. Q. Xi , J. Xia , J. J. Xia , G. M. Xiang , D. X. Xiao , G. Xiao , Y. F. Xiao , Y. L. Xin , H. D. Xing , Y. Xing , D. R. Xiong , B. N. Xu , C. Y. Xu , D. L. Xu , R. F. Xu , R. X. Xu , S. S. Xu , W. L. Xu , L. Xue , D. H. Yan , T. Yan , C. W. Yang , C. Y. Yang , F. F. Yang , L. L. Yang , M. J. Yang , R. Z. Yang , W. X. Yang , Z. H. Yang , Z. G. Yao , X. A. Ye , L. Q. Yin , N. Yin , X. H. You , Z. Y. You , Q. Yuan , H. Yue , H. D. Zeng , T. X. Zeng , W. Zeng , X. T. Zeng , M. Zha , B. B. Zhang , B. T. Zhang , C. Zhang , H. Zhang , H. M. Zhang , H. Y. Zhang , J. L. Zhang , J. Y. Zhang , Li Zhang , P. F. Zhang , R. Zhang , S. R. Zhang , S. S. Zhang , S. Y. Zhang , W. Zhang , W. Y. Zhang , X. Zhang , X. P. Zhang , Yi Zhang , Yong Zhang , Z. P. Zhang , J. Zhao , L. Zhao , L. Z. Zhao , S. P. Zhao , X. H. Zhao , Z. H. Zhao , F. Zheng , T. C. Zheng , B. Zhou , H. Zhou , J. N. Zhou , M. Zhou , P. Zhou , R. Zhou , X. X. Zhou , X. X. Zhou , B. Y. Zhu , C. G. Zhu , F. R. Zhu , H. Zhu , K. J. Zhu , Y. C. Zou , X. Zuo

Mining the Ultra-Hot Skies of HAT-P-70b: Detection of a Profusion of Neutral and Ionized Species

With an equilibrium temperature above 2500 K, the recently discovered HAT-P-70 b belongs to a new class of exoplanets known as ultra-hot Jupiters: extremely irradiated gas giants with day-side temperatures that resemble those found in…

Earth and Planetary Astrophysics · Physics 2022-02-02 Aaron Bello-Arufe , Samuel H. C. Cabot , João M. Mendonça , Lars A. Buchhave , Alexander D. Rathcke

Molecular abundances in carbon-rich circumstellar envelopes

We present a millimetre molecular line survey of seven high mass loss rate carbon stars in both the northern and southern skies. A total of 196 emission lines (47 transitions) from 24 molecular species were detected. The observed CO…

Astrophysics · Physics 2009-11-07 P. M. Woods , F. L. Schoeier , L. -A. Nyman , H. Olofsson

Complex organic molecules uncover deeply embedded precursors of hot cores

During the process of star formation, the dense gas undergoes significant chemical evolution leading to the emergence of a rich variety of molecules associated with hot cores and hot corinos. However, the physical and chemical conditions…

Astrophysics of Galaxies · Physics 2024-06-19 Laure Bouscasse , Timea Csengeri , Friedrich Wyrowski , K. M. Menten , S. Bontemps

Observing the Next Galactic Supernova

We model the distance, extinction, and magnitude probability distributions of a successful Galactic core-collapse supernova (ccSN), its shock breakout radiation, and its massive star progenitor. We find, at very high probability (~100%),…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Scott M. Adams , C. S. Kochanek , John F. Beacom , Mark R. Vagins , K. Z. Stanek

Detection of Nuclear X-ray Sources in Nearby Galaxies with Chandra

We report preliminary results from an arcsecond-resolution X-ray survey of nearby galaxies using ACIS on board Chandra. The total sample consists of 41 low-luminosity AGNs, including Seyferts, LINERs, and LINER/H II transition objects. In…

Astrophysics · Physics 2009-11-06 Luis C. Ho , Eric D. Feigelson , Leisa K. Townsley , Rita M. Sambruna , Gordon P. Garmire , W. N. Brandt , Alexei V. Filippenko , Richard E. Griffiths , Andrew F. Ptak , Wallace L. W. Sargent

Near-Term Detectability of Terrestrial Extrasolar Planets: TEP Network Observations of CM Draconis

Results from a photometric search for extrasolar planetary transits across the eclipsing binary CM Dra are presented. The TEP (Transits of Extrasolar Planets) network has observed this star since 1994, and a lightcurve with 617 hours of…

Astrophysics · Physics 2012-08-27 TEP Network , : , H. J. Deeg , L. R. Doyle , V. P. Kozhevnikov , E. L. Martin , B. Oetiker , E. Palaiologou , J. Schneider , C. Afonso , E. W. Dunham , J. M. Jenkins , Z. Ninkov , R. P. S. Stone , P. E. Zakharova

Optical spectroscopy of microquasar candidates at low galactic latitudes

We report optical spectroscopic observations of a sample of 6 low-galactic latitude microquasar candidates selected by cross-identification of X-ray and radio point source catalogs for |b|<5 degrees. Two objects resulted to be of clear…

Astrophysics · Physics 2007-05-23 J. Marti , J. M. Paredes , J. S. Bloom , J. Casares , M. Ribo , E. E. Falco

The detection of the (J,K)=(18,18) line of NH3

The first astronomical detection of the metastable ($J,K$) = (18,18) line of NH3 is reported. With 3130 K above the ground state, this is the NH3 line with by far the highest energy detected in interstellar space. It is observed in…

Astrophysics · Physics 2009-11-11 T. L. Wilson , C. Henkel , S. Huettemeister

Emission lines between 1 and 2 keV in Cometary X-ray Spectra

We present the detection of new cometary X-ray emission lines in the 1.0 to 2.0 keV range using a sample of comets observed with the Chandra X-ray observatory and ACIS spectrometer. We have selected 5 comets from the Chandra sample with…

Earth and Planetary Astrophysics · Physics 2015-06-12 Ian Ewing , Damian J. Christian , Dennis Bodewits , Konrad Dennerl , Carey M. Lisse , Scott J. Wolk

Magellan Adaptive Optics first-light observations of the exoplanet beta Pic b. II. 3-5 micron direct imaging with MagAO+Clio, and the empirical bolometric luminosity of a self-luminous giant planet

Young giant exoplanets are a unique laboratory for understanding cool, low-gravity atmospheres. A quintessential example is the massive extrasolar planet $\beta$ Pic b, which is 9 AU from and embedded in the debris disk of the young nearby…

Earth and Planetary Astrophysics · Physics 2015-12-17 Katie M. Morzinski , Jared R. Males , Andy J. Skemer , Laird M. Close , Phil M. Hinz , T. J. Rodigas , Alfio Puglisi , Simone Esposito , Armando Riccardi , Enrico Pinna , Marco Xompero , Runa Briguglio , Vanessa P. Bailey , Katherine B. Follette , Derek Kopon , Alycia J. Weinberger , Ya-Lin Wu

Progenitor constraint using line ratios of the CNO elements in supernova remnants

Unveiling the nature of progenitors is crucial for understanding the origin and the mechanism of core-collapse and thermonuclear supernovae (SNe). While several methods have been developed to derive stellar properties so far, many questions…

High Energy Astrophysical Phenomena · Physics 2023-11-14 Hiroyuki Uchida , Takuto Narita

An upper limit for the water outgassing rate of the main-belt comet 176P/LINEAR observed with Herschel/HIFI

176P/LINEAR is a member of the new cometary class known as main-belt comets (MBCs). It displayed cometary activity shortly during its 2005 perihelion passage that may be driven by the sublimation of sub-surface ices. We have therefore…

Earth and Planetary Astrophysics · Physics 2012-10-01 M. de Val-Borro , L. Rezac , P. Hartogh , N. Biver , D. Bockelée-Morvan , J. Crovisier , M. Küppers , D. C. Lis , S. Szutowicz , G. A. Blake , M. Emprechtinger , C. Jarchow , E. Jehin , M. Kidger , L. -M. Lara , E. Lellouch , R. Moreno , M. Rengel

Discovery of Carbon Radio Recombination Lines in absorption towards Cygnus~A

We present the first detection of carbon radio recombination line absorption along the line of sight to Cygnus A. The observations were carried out with the LOw Frequency ARray in the 33 to 57 MHz range. These low frequency radio…

Astrophysics of Galaxies · Physics 2015-06-18 J. B. R. Oonk , R. J. van Weeren , F. Salgado , L. K. Morabito , A. G. G. M. Tielens , H. J. A. Rottgering , A. Asgekar , G. J. White , A. Alexov , J. Anderson , I. M. Avruch , F. Batejat , R. Beck , M. E. Bell , I. van Bemmel , M. J. Bentum , G. Bernardi , P. Best , A. Bonafede , F. Breitling , M. Brentjens , J. Broderick , M. Brueggen , H. R. Butcher , B. Ciardi , J. E. Conway , A. Corstanje , F. de Gasperin , E. de Geus , M. de Vos , S. Duscha , J. Eisloeffel , D. Engels , J. van Enst , H. Falcke , R. A. Fallows , R. Fender , C. Ferrari , W. Frieswijk , M. A. Garrett , J. Griessmeier , J. P. Hamaker , T. E. Hassall , G. Heald , J. W. T. Hessels , M. Hoeft , A. Horneffer , A. van der Horst , M. Iacobelli , N. J. Jackson , E. Juette , A. Karastergiou , W. Klijn , J. Kohler , V. I. Kondratiev , M. Kramer , M. Kuniyoshi , G. Kuper , J. van Leeuwen , P. Maat , G. Macario , G. Mann , S. Markoff , J. P. McKean , M. Mevius , J. C. A. Miller-Jones , J. D. Mol , D. D. Mulcahy , H. Munk , M. J. Norden , E. Orru , H. Paas , M. Pandey-Pommier , V. N. Pandey , R. Pizzo , A. G. Polatidis , W. Reich , A. M. M. Scaife , A. Schoenmakers , D. Schwarz , A. Shulevski , J. Sluman , O. Smirnov , C. Sobey , B. W. Stappers , M. Steinmetz , J. Swinbank , M. Tagger , Y. Tang , C. Tasse , S. ter Veen , S. Thoudam , C. Toribio , R. van Nieuwpoort , R. Vermeulen , C. Vocks , C. Vogt , R. A. M. J. Wijers , M. W. Wise , O. Wucknitz , S. Yatawatta , P. Zarka , A. Zensus

Revisiting the pulsational characteristics of the exoplanet host star $\beta$ Pictoris

Exoplanet properties crucially depend on their host stars' parameters. In case the exoplanet host star shows pulsations, asteroseismology can be used for an improved description of the stellar parameters. We aim to revisit the pulsational…

Solar and Stellar Astrophysics · Physics 2019-07-03 K. Zwintz , D. R. Reese , C. Neiner , A. Pigulski , R. Kuschnig , M. Muellner , S. Zieba , L. Abe , T. Guillot , G. Handler , M. Kenworthy , R. Stuik , A. F. J. Moffat , A. Popowicz , S. M. Rucinski , G. A. Wade , W. W. Weiss , J. I. Bailey , S. Crawford , M. Ireland , R. Kuhn , B. Lomberg , E. E. Mamajek , S. N. Mellon , G. J. Talens

Contrast and Temperature Dependence of Multi-Epoch High-Resolution Cross-Correlation Exoplanet Spectroscopy

While high-resolution cross-correlation spectroscopy (HRCCS) techniques have proven effective at characterizing the atmospheres of transiting and non-transiting hot Jupiters, the limitations of these techniques are not well understood. We…

Earth and Planetary Astrophysics · Physics 2021-02-10 Luke Finnerty , Cam Buzard , Stefan Pelletier , Danielle Piskorz , Alexandra C. Lockwood , Chad F. Bender , Björn Benneke , Geoffrey A. Blake

A Multi-Transition Study of Molecules toward NGC 1068 based on High-Resolution Imaging Observations with ALMA

We present 0.8-mm band molecular images and spectra obtained with the Atacama Large Millimeter/submillimeter Array (ALMA) toward one of the nearest galaxies with an active galactic nucleus (AGN), NGC 1068. Distributions of CO isotopic…

Astrophysics of Galaxies · Physics 2015-06-23 Taku Nakajima , Shuro Takano , Kotaro Kohno , Nanase Harada , Eric Herbst , Yoichi Tamura , Takuma Izumi , Akio Taniguchi , Tomoka Tosaki

Do Young Suns Produce Frequent, Massive CMEs? Results from Five-year Dedicated Optical Observations of EK Draconis and V889 Hercules

We report results from a five-year (132-night) dedicated observational campaign targeting two nearby young solar-type stars, EK Draconis ($\sim$50-125 Myr age) and V889 Hercules ($\sim$30 Myr age), using the 3.8m Seimei Telescope and…

Solar and Stellar Astrophysics · Physics 2025-10-28 Kosuke Namekata , Hiroyuki Maehara , Yuta Notsu , Satoshi Honda , Kai Ikuta , Daisaku Nogami , Kazunari Shibata

Galaxy Clusters in the Swift/BAT era: Hard X-rays in the ICM

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 band. We use the BAT sample to…

Astrophysics · Physics 2008-12-18 M. Ajello , P. Rebusco , N. Cappelluti , O. Reimer , H. Boehringer , J. Greiner , N. Gehrels , J. Tueller , A. Moretti

The CN isotopic ratios in comets

Our aim is to determine the isotopic ratios {$^{12}$C/$^{13}$C}{} and {$^{14}$N/$^{15}$N}{} in a variety of comets and link these measurements to the formation and evolution of the solar system. The {$^{12}$C/$^{13}$C}{} and…

Earth and Planetary Astrophysics · Physics 2015-05-13 J. Manfroid , E. Jehin , D. Hutsemékers , A. Cochran , J. -M. Zucconi , C. Arpigny , R. Schulz , J. A. Stüwe , I. Ilyin