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An isolated stellar-mass black hole detected through astrometric microlensing
, Article Astrophysical Journal ; Volume 933, Issue 1 , 2022 ; 0004637X (ISSN) ; Anderson, J ; Casertano, S ; Bond, H.E ; Udalski, A ; Dominik, M ; Calamida, A ; Bellini, A ; Brown, T. M ; Rejkuba, M ; Bajaj, V ; Kains, N ; Ferguson, H. C ; Fryer, C.L ; Yock, P ; Mróz, P ; Kozłowski, S ; Pietrukowicz, P ; Poleski, R ; Skowron, J ; Soszyński, I ; Szymański, M. K ; Ulaczyk, K ; Wyrzykowski, L ; Barry, R. K ; Bennett, D. P ; Bond, I. A ; Hirao, Y ; Silva, S. I ; Kondo, I ; Koshimoto, N ; Ranc, C ; Rattenbury, N. J ; Sumi, T ; Suzuki, D ; Tristram, P. J ; Vandorou, A ; Beaulieu, J.-P ; Marquette, J.-B ; Cole, A ; Fouqué, P ; Hill, K ; Dieters, S ; Coutures, C ; Dominis-Prester, D ; Bennett, C ; Bachelet, E ; Menzies, J ; Albrow, M ; Pollard, K ; Gould, A ; Yee, J. C ; Allen, W ; Almeida, L. A ; Christie, G ; Drummond, J ; Gal-Yam, A ; Gorbikov, E ; Jablonski, F ; Lee, C.-U ; Maoz, D ; Manulis, I ; McCormick, J ; Natusch, T ; Pogge, R. W ; Shvartzvald, Y ; Jørgensen, U. G ; Alsubai, K. A ; Andersen, M. I ; Bozza, V ; Novati, S. C ; Burgdorf, M ; Hinse, T. C ; Hundertmark, M ; Husser, T.-O ; Kerins, E ; Longa-Peña, P ; Mancini, L ; Penny, M ; Rahvar, S ; Ricci, D ; Sajadian, S ; Skottfelt, J ; Snodgrass, C ; Southworth, J ; Tregloan-Reed, J ; Wambsganss, J ; Wertz, O ; Tsapras, Y ; Street, R. A ; Bramich, D.M ; Horne, K ; Steele, I. A ; Sahu, K. C ; Sharif University of Technology
Institute of Physics
2022
Abstract
We report the first unambiguous detection and mass measurement of an isolated stellar-mass black hole (BH). We used the Hubble Space Telescope (HST) to carry out precise astrometry of the source star of the long-duration (t E ≃ 270 days), high-magnification microlensing event MOA-2011-BLG-191/OGLE-2011-BLG-0462 (hereafter designated as MOA-11-191/OGLE-11-462), in the direction of the Galactic bulge. HST imaging, conducted at eight epochs over an interval of 6 yr, reveals a clear relativistic astrometric deflection of the background star's apparent position. Ground-based photometry of MOA-11-191/OGLE-11-462 shows a parallactic signature of the effect of Earth's motion on the microlensing...
Design, performance, and calibration of CMS forward calorimeter wedges
, Article European Physical Journal C ; Volume 53, Issue 1 , 2008 , Pages 139-166 ; 14346044 (ISSN) ; Abramov, V ; Acharya, B ; Adams, M ; Akchurin, N ; Akgun, U ; Anderson, E.W ; Antchev, G ; Arcidy, M ; Ayan, S ; Aydin, S ; Baarmand, M ; Babich, K ; Baden, D ; Bakirci, M.N ; Banerjee, S ; Banerjee, S ; Bard, R ; Barnes, V ; Bawa, H ; Baiatian, G ; Bencze, G ; Beri, S ; Bhatnagar, V ; Bodek, A ; Budd, H ; Burchesky, K ; Camporesi, T ; Cankoçak, K ; Carrell, K ; Cerci, S ; Chendvankar, S ; Chung, Y ; Cremaldi, L ; Cushman, P ; Damgov, J ; De Barbaro, P ; Deliomeroglu, M ; Demianov, A ; De Visser, T ; Dimitrov, L ; Dindar, K ; Dugad, S ; Dumanoglu, I ; Duru, F ; Elias, J ; Elvira, D ; Emeliantchik, I ; Eno, S ; Eskut, E ; Fenyvesi, A ; Fisher, W ; Freeman, J ; Gamsizkan, H ; Gavrilov, V ; Genchev, V ; Gershtein, Y ; Golutvin, I ; Goncharov, P ; Grassi, T ; Green, D ; Gribushin, A ; Grinev, B ; Gülmez, E ; Gümüş, K ; Haelen, T ; Hagopian, S ; Hagopian, V ; Hashemi, M ; Hauptman, J ; Hazen, E ; Heering, A ; Ilyina, N ; Isiksal, E ; Jarvis, C ; Johnson, K ; Kaftanov, V ; Kalagin, V ; Kalinin, A ; Karmgard, D ; Kalmani, S ; Katta, S ; Kaur, M ; Kaya, M ; Kayis-Topaksu, A ; Kellogg, R ; Khmelnikov, A ; Kim, H ; Kisselevich, I ; Kodolova, O ; Kohli, J ; Kolossov, V ; Korablev, A ; Korneev, Y ; Kosarev, I ; Koylu, S ; Kramer, L ; Krinitsyn, A ; Krokhotin, A ; Kryshkin, V ; Kuleshov, S ; Kumar, A ; Kunori, S ; Kurt, P ; Kuzucu-Polatoz, A ; Laasanen, A ; Ladygin, V ; Laszlo, A ; Lawlor, C ; Lazic, D ; Levchuk, L ; Linn, S ; Litvintsev, D ; Litov, L ; Los, S ; Lubinsky, V ; Lukanin, V ; Ma, Y ; MacHado, E ; Mans, J ; Markowitz, P ; Massolov, V ; Martinez, G ; Mazumdar, K ; Merlo, J.P ; Mermerkaya, H ; Mescheryakov, G ; Mestvirishvili, A ; Miller, M ; Mohammadi-Najafabadi, M ; Moissenz, P ; Mondal, N ; Nagaraj, P ; Norbeck, E ; Olson, J ; Onel, Y ; Onengut, G ; Ozdes-Koca, N ; Ozkan, C ; Ozkurt, H ; Ozkorucuklu, S ; Paktinat, S ; Pal, A ; Patil, M ; Penzo, A ; Petrushanko, S ; Petrosyan, A ; Pikalov, V ; Piperov, S ; Podrasky, V ; Pompos, A ; Posch, C ; Qiang, W ; Reddy, L ; Reidy, J ; Ruchti, R ; Rogalev, E ; Rohlf, J ; Ronzhin, A ; Ryazanov, A ; Safronov, G ; Sanders, D.A ; Sanzeni, C ; Sarycheva, L ; Satyanarayana, B ; Schmidt, I ; Sekmen, S ; Semenov, S ; Senchishin, V ; Sergeyev, S ; Serin-Zeyrek, M ; Sever, R ; Singh, J ; Sirunyan, A ; Skuja, A ; Sharma, S ; Sherwood, B ; Shumeiko, N ; Smirnov, V ; Sogut, K ; Sorokin, P ; Spezziga, M ; Stefanovich, R ; Stolin, V ; Sulak, L ; Suzuki, I ; Talov, V ; Teplov, K ; Thomas, R ; Topakli, H ; Tully, C ; Turchanovich, L ; Ulyanov, A ; Vankov, I ; Vardanyan, I ; Varela, F ; Vergili, M ; Verma, P ; Vesztergombi, G ; Vidal, R ; Vishnevskiy, A ; Vlassov, E ; Vodopiyanov, I ; Volkov, A ; Volodko, A ; Wang, L ; Wetstein, M ; Winn, D ; Wigmans, R ; Whitmore, J ; Wu, S.X ; Yazgan, E ; Yershov, A ; Yetkin, T ; Zalan, P ; Zarubin, A ; Zeyrek, M ; Sharif University of Technology
2008
Abstract
We report on the test beam results and calibration methods using high energy electrons, pions and muons with the CMS forward calorimeter (HF). The HF calorimeter covers a large pseudorapidity region (3≤|η|≤5), and is essential for a large number of physics channels with missing transverse energy. It is also expected to play a prominent role in the measurement of forward tagging jets in weak boson fusion channels in Higgs production. The HF calorimeter is based on steel absorber with embedded fused-silica-core optical fibers where Cherenkov radiation forms the basis of signal generation. Thus, the detector is essentially sensitive only to the electromagnetic shower core and is highly...
OGLE-2008-BLG-510: First automated real-time detection of a weak microlensing anomaly - brown dwarf or stellar binary?
, Article Monthly Notices of the Royal Astronomical Society ; Volume 424, Issue 2 , 2012 , Pages 902-918 ; 00358711 (ISSN) ; Dominik, M ; Rattenbury, N. J ; Jørgensen, U. G ; Tsapras, Y ; Bramich, D. M ; Udalski, A ; Bond, I. A ; Liebig, C ; Cassan, A ; Fouqué, P ; Fukui, A ; Hundertmark, M ; Shin, I. G ; Lee, S. H ; Choi, J. Y ; Park, S. Y ; Gould, A ; Allan, A ; Mao, S ; Wyrzykowski, Ł ; Street, R. A ; Buckley, D ; Nagayama, T ; Mathiasen, M ; Hinse, T. C ; Novati, S. C ; Harpsøe, K ; Mancini, L ; Scarpetta, G ; Anguita, T ; Burgdorf, M. J ; Horne, K ; Hornstrup, A ; Kains, N ; Kerins, E ; Kjærgaard, P ; Masi, G ; Rahvar, S ; Ricci, D ; Snodgrass, C ; Southworth, J ; Steele, I. A ; Surdej, J ; Thöne, C. C ; Wambsganss, J ; Zub, M ; Albrow, M. D ; Batista, V ; Beaulieu, J. P ; Bennett, D. P ; Caldwell, J. A. R ; Cole, A. A ; Cook, K. H ; Coutures, C ; Dieters, S ; Prester, D. D ; Donatowicz, J ; Greenhill, J ; Kane, S. R ; Kubas, D ; Marquette, J. B ; Martin, R ; Menzies, J ; Pollard, K. R ; Sahu, K. C ; Williams, A ; Szymański, M. K ; Kubiak, M ; Pietrzyński, G ; Soszyński, I ; Poleski, R ; Ulaczyk, K ; Depoy, D. L ; Dong, S ; Han, C ; Janczak, J ; Lee, C. U ; Pogge, R. W ; Abe, F ; Furusawa, K ; Hearnshaw, J. B ; Itow, Y ; Kilmartin, P. M ; Korpela, A. V ; Lin, W ; Ling, C. H ; Masuda, K ; Matsubara, Y ; Miyake, N ; Muraki, Y ; Ohnishi, K ; Perrott, Y. C ; Saito, T ; Skuljan, L ; Sullivan, D. J ; Sumi, T ; Suzuki, D ; Sweatman, W. L ; Tristram, P. J ; Wada, K ; Yock, P. C. M ; Gulbis, A ; Hashimoto, Y ; Kniazev, A ; Vaisanen, P ; Sharif University of Technology
MNRAS
2012
Abstract
The microlensing event OGLE-2008-BLG-510 is characterized by an evident asymmetric shape of the peak, promptly detected by the Automated Robotic Terrestrial Exoplanet Microlensing Search (ARTEMiS) system in real time. The skewness of the light curve appears to be compatible both with binary-lens and binary-source models, including the possibility that the lens system consists of an M dwarf orbited by a brown dwarf. The detection of this microlensing anomaly and our analysis demonstrate that: (1) automated real-time detection of weak microlensing anomalies with immediate feedback is feasible, efficient and sensitive, (2) rather common weak features intrinsically come with ambiguities that are...
OGLE 2008-BLG-290: An accurate measurement of the limb darkening of a galactic bulge K Giant spatially resolved by microlensing
, Article Astronomy and Astrophysics ; Volume 518, Issue 19 , 2010 ; 00046361 (ISSN) ; Heyrovsky, D ; Dong, S ; Gould, A ; Udalski, A ; Albrow, M. D ; Batista, V ; Beaulieu, J. P ; Bennett, D. P ; Bond, I. A ; Bramich, D. M ; Calchi Novati, S ; Cassan, A ; Coutures, C ; Dieters, S ; Dominik, M ; Dominis Prester, D ; Greenhill, J ; Horne, K ; Jørgensen, U. G ; Kozłowski, S ; Kubas, D ; Lee, C. H ; Marquette, J. B ; Mathiasen, M ; Menzies, J ; Monard, L.A.G ; Nishiyama, S ; Papadakis, I ; Street, R ; Sumi, T ; Williams, A ; Yee, J.C ; Brillant, S ; Caldwell, J.A.R ; Cole, A ; Cook, K.H ; Donatowicz, J ; Kains, N ; Kane, S.R ; Martin, R ; Pollard, K.R ; Sahu, K.C ; Tsapras, Y ; Wambsganss, J ; Depoy, D.L ; Gaudi, B.S ; Han, C ; Lee, C.-U ; Park, B.-G ; Pogge, R.W ; Kubiak, M ; Szymański, M.K ; Pietrzyński, G ; Soszyński, I ; Szewczyk, O ; Ulaczyk, K ; Wyrzykowski, L ; Abe, F ; Fukui, A ; Furusawa, K ; Gilmore, A.C ; Hearnshaw, J.B ; Itow, Y ; Kamiya, K ; Kilmartin, P.M ; Korpela, A.V ; Lin, W ; Ling, C.H ; Masuda, K ; Matsubara, Y ; Miyake, N ; Muraki, Y ; Nagaya, M ; Ohnishi, K ; Okumura, T ; Perrott, Y ; Rattenbury, N.J ; Saito, T ; Sako, T ; Sato, S ; Skuljan, L ; Sullivan, D ; Sweatman, W ; Tristram, P.J ; Yock, P.C.M ; Allan, A ; Bode, M.F ; Burgdorf, M.J ; Clay, N ; Fraser, S.N ; Hawkins, E ; Kerins, E ; Lister, T.A ; Mottram, C.J ; Saunders, E.S ; Snodgrass, C ; Steele, I.A ; Wheatley, P.J ; Anguita, T ; Bozza, V ; Harpsøe, K ; Hinse, T.C ; Hundertmark, M ; Kjærgaard, P ; Liebig, C ; Mancini, L ; Masi, G ; Rahvar, S ; Ricci, D ; Scarpetta, G ; Southworth, J ; Surdej, J ; Thöne, C.C ; Riffeser, A ; Seitz, S ; Bender, R ; Sharif University of Technology
2010
Abstract
Context. Not only is gravitational microlensing a successful tool for discovering distant exoplanets, but it also enables characterization of the lens and source stars involved in the lensing event. Aims. In high-magnification events, the lens caustic may cross over the source disk, which allows determination of the angular size of the source and measurement of its limb darkening. Methods. When such extended-source effects appear close to maximum magnification, the resulting light curve differs from the characteristic Paczyński point-source curve. The exact shape of the light curve close to the peak depends on the limb darkening of the source. Dense photometric coverage permits measurement...